JP6401530B2 - Revetment block installation method and installation jig - Google Patents

Description

  The present invention relates to an installation method and an installation jig for a revetment block for preventing damages such as high waves, storm surges, water increases, and tsunamis.

  Japan is an island country and the country is surrounded by a coastline. In addition, there are many rivers and lakes, and there are very many boundaries between water and land such as riverbanks and lakeshores. Here, Japan's coastline often has a complex shape, as represented by the Rias coastline. In addition, in Japan, mountainous areas occupy a large proportion, and the plains are concentrated near the coast. For this reason, many urban areas where urban areas are developed and the population is concentrated tend to concentrate near the coast.

  On the other hand, because there are many mountainous areas, rivers and lakes often have smaller or more complex forms than continents, and river and lake shores tend to be complex shapes. Rivers and lake shores often form few plains, so urban areas tend to concentrate near rivers and lakes.

  Here, as described above, the shape of the Japanese coastline may be complicated. It may take the form of a bay or many islands may be in close proximity. In addition, it has a climate that is susceptible to storms caused by typhoons and low pressures worldwide, and has characteristics that high waves and storm surges are likely to occur on the coastline.

  In addition, like the 2011 Great East Japan Earthquake, it is an earthquake-prone area and has a high possibility of being greatly damaged by a tsunami.

  Similarly, rivers and lakes are likely to increase, and rivers and lakes are also susceptible to damage such as floods and flooding.

  As described above, Japan has many beaches, riverbanks, lake shores, and the like, and has characteristics that are liable to cause damage such as high waves, storm surges, increased water, and tsunamis on the beaches, riverbanks, and lakeshores. As described above, the Great East Japan Earthquake in 2011 caused a massive tsunami damage on the Pacific coast of the Tohoku region.

  Under the circumstances as described above, the construction of raising the coastline and the like is performed in order to prevent damages such as high waves, storm surges, flooding, and tsunamis on the coast, riverside, and lake shore. This raising work has been carried out by using seawalls and breakwaters, but taking into account the tsunami damage caused by the Great East Japan Earthquake in 2011, raising the height of the coastline itself (above sea level) was raised while raising the height. A revetment block has been installed to ensure the strength of the coastline. The revetment block is installed like a cover on the surface of the coastline that is raised, or on the surface of the coastline that is not raised but wants to prevent destruction of the coastline due to damage such as a tsunami.

  Such a revetment block is installed and fixed on the surface over a predetermined range of the coastline. As a result, a predetermined range of the coastline is covered. The revetment block may be made of various materials, but in many cases is made of concrete. This is because there are advantages such as ease of manufacturing, reduction of manufacturing cost, existence of companies that can be manufactured in various places, sufficient weight, and durability after installation.

  Such a revetment block is used not only on the coast but also on the river and lake shores. For example, a technique has been proposed that can cover a predetermined range of a coastline on the surface as a revetment block (see, for example, Patent Document 1).

  The revetment block as disclosed in Patent Document 1 is installed over a predetermined range in order to prevent damage to high waves, storm surges, water increases, and tsunamis on the coast, river bank, lake shore and the like. In installation, it is preferable that a plurality of revetment blocks be installed in an orderly manner without causing much gaps. This is because the strength as a whole is enhanced, and it has durability capable of resisting a huge force such as a tsunami.

  On the other hand, the revetment block is often made of concrete or reinforced concrete as described above. For this reason, each revetment block is extremely heavy. It is very difficult to order such heavy objects in an orderly manner. It is also a dangerous task.

  In such a situation, a technique related to an installation method for installing a revetment block has also been proposed (see, for example, Patent Documents 2 and 3).

JP 2004-35366 A JP 2014-40727 A JP 2010-196271 A

  Patent Document 1 is a concrete molded body 3 installed on a shore, a coast, or a floor of a freshwater area, a sea area, or a brackish water area, and includes a fine skeleton structure having a large number of voids, and is formed in a porous shape. It is characterized by. In addition, slow cooling slag is used as the fine skeleton structure. Moreover, the concrete molded body is a block 1 in which the concrete molded body 3 is embedded, wherein the concrete molded body 3 is formed separately, and the concrete molded body 3 is partially embedded to expose the surface. Disclose.

  Patent Document 1 can be applied as a revetment block such as a coast, a river bank, a lake shore and the like. By arranging multiple concrete compacts in an orderly manner, there is a possibility of responding to flooding and tsunami damage on the coast, riverbank, lake shore, etc. However, each concrete molded body is very heavy, and has problems such as labor, difficulty, cost, danger, and lengthening of working time when installing using a crane or the like.

  In Patent Document 2, the first jig 11 has a structure in which the protruding portion 13 protrudes in a direction extending at a right angle to the extending direction of the main body portion. In this construction method, with the front wall block 3 of the split type flare revetment lying on the ground G, the main body portion of the first jig 11 extends forward along the front-rear direction of the front wall block 3. The bottom surface 3f1 of the leg portion 3f of the wall block 3 is attached to a portion close to the ground G, whereby the protruding portion 13 is arranged to protrude from the side surface of the front wall block 3. Then, the head portion 3g of the front wall block 3 is lifted by the wire W so that the protruding portion 13 is grounded, and the front wall block 3 is raised while the fulcrum is moved along the outer surface 13a with the ground portion 13a1 as a fulcrum. Disclose the revetment construction method.

  The construction method of Patent Document 2 can be installed while being arranged in a predetermined range on the coast, river bank, and lake shore by suspending the revetment block with a crane.

  However, this is a technology in which the crane installs the revetment block on the beach, etc., by hooking the wire of the crane to the mounting part protruding above the revetment block. For this reason, adjustment and control, such as the position of the revetment block and the inclination to the installation place, depend on the control of the crane, and the installation work is difficult. There is a problem that skill is required for crane operation which is the center of installation work. Combined with these problems, there is a problem that the installation (construction) work time on the revetment block becomes longer.

  Also, in order to install the revetment block in a manner that hangs the revetment block from above by hooking the crane wire to the mounting part protruding from the top of the revetment block, the crane can be used for positioning, angle alignment (tilting), etc. There is also a problem that requires human work on the ground other than the pilot. Such human work on the ground has a problem with danger.

  Due to the skill level of crane operation and human work, there is a problem that the construction time of the revetment block becomes further longer and the construction cost increases. The revetment block construction on the coast destroyed by the tsunami caused by the Great East Japan Earthquake is a very large scale construction, and it is not preferable that construction time, construction cost and risk increase. This is the same for construction in other locations.

  In addition, the crane-dependent construction of Patent Document 2 also has a problem that the installation accuracy of a plurality of revetment blocks is deteriorated.

  Patent Document 3 is a method of reinforcing an existing revetment provided with a retaining wall in which a steel sheet pile 11 that is continuous on a riverbank is supported by a waterbed ground 12 and an upper work 13 in which the steel sheet pile 11 is covered with concrete. Then, the water bottom ground 12 in front of the existing revetment 10 requiring reinforcement is dug down, and a horizontal block installation foundation 17 made of concrete or the like is placed on the dug down water bottom ground 12, and an L-shaped retaining wall is placed on the block installation foundation 17. The block 20 is suspended by a crane 18 and arranged in parallel along the existing revetment 10, and the L-type retaining wall block 20 is provided as a retaining wall 30 with the gap between the L-type retaining wall block 20 and the existing revetment 10 being backed up. Disclosed is a method for reinforcing an existing revetment in which the periphery of 20 is cast with earth or sand or concrete to form a new water bottom ground 31 and the retaining wall 30 is a new revetment.

  However, Patent Document 3 is not directly related to a technique of arranging and installing a plurality of revetment blocks.

  As described above, the conventional techniques represented by Patent Documents 1 to 3 have the following problems.

  (Problem 1) Since the crane wire is attached to the attachment part at the upper part of the revetment block and installed on the beach or the like, the installation work greatly depends on the crane operation.

  (Problem 2) In crane operation, since only the upper part of the revetment block is suspended, there is a risk that the revetment block will fall off the wire.

  (Problem 3) The coasts where the revetment blocks are installed have site characteristics and tilt characteristics, but positioning and tilt adjustment of these locations must be performed by crane operations and ground operator operations.

  (Problem 4) In problems 2 and 3, there is a further danger.

  (Problem 5) In relation to Problem 3, when a plurality of revetment blocks must be installed within a predetermined gap and at an arrangement interval, it cannot be handled with sufficient accuracy.

  (Problem 6) On the basis of problems 1 to 5, there is a problem that the work period required for installation becomes long.

  (Problem 7) Due to problem 6, the construction cost increases.

  An object of this invention is to provide the installation method and installation jig | tool of a revetment block which can shorten a construction period in view of the said problem.

In view of the above problems, the installation method of the revetment block of the present invention is a revetment block installation method for installing a revetment block in a revetment area,
A penetrating member having a three-dimensional shape and a through-hole in a revetment block having a through-hole, having a first plate member and a second plate member facing each other, and a connecting portion connecting the first plate member and the second plate member. Through, through process,
A communication step of passing a communication member that communicates and fixes a first lower hole provided below the first plate member and a second lower hole provided below the second plate member;
A first wire insertion step of passing one of the wires through an upper hole provided above the connecting portion;
A second wire insertion step of passing the other of the wires through a fixing hole provided in one of the communication members;
A lifting step of lifting the wire through the first wire insertion step and the second wire insertion step with a crane;
An installation process for installing the revetment block lifted in the lifting process at a predetermined position in the revetment area,
The penetrating member has a shape and a size such that the first plate member and the second plate member protrude from above and below the through hole.

  The method of installing the revetment block according to the present invention can be adjusted with high accuracy and adjusted to the position and the inclination to the installation location. In particular, at this time, a high level of skill in crane operation is not required, and a general level operator can work.

  In addition, the work amount of ground workers other than the crane operator is reduced, and the danger of the workplace can be reduced. Moreover, since the revetment block can be suspended diagonally and three-dimensionally up and down, there is little risk of falling.

  Together, these can shorten the construction period for installation. If the construction period can be shortened, large-scale revetment repair work can be completed in a short period of time, and the national land can be secured at an early stage. In addition, installation costs can be reduced and budgets can be allocated to various locations.

It is a perspective view of the shore where revetment is required in Embodiment 1 of the present invention. It is a perspective view which shows the installation work of the revetment block in Embodiment 1 of this invention. It is a photograph which shows the condition of the installation construction of the revetment block using the crane in Embodiment 1 of this invention. It is a schematic diagram of the revetment block in Embodiment 1 of this invention. 4 is a top view of the installation jig in Embodiment 1. FIG. It is the front view seen from 21 A of 1st board members of the penetration member in Embodiment 1 of this invention. It is the front view seen from the connection part side of the penetration member in Embodiment 1 of this invention. It is a side view of the communicating member in Embodiment 1 of the present invention. It is a front view which shows the state by which the communicating member was inserted in the penetration member in Embodiment 1 of this invention. It is a schematic diagram which shows the penetration process in Embodiment 1 of this invention. It is a schematic diagram which shows the state after the communication process in Embodiment 1 of this invention. It is a schematic diagram which shows the 1st wire penetration process in Embodiment 1 of this invention. It is a schematic diagram which shows the lifting process in Embodiment 1 of this invention. It is a photograph of the installation jig in Embodiment 2 of the present invention. It is a photograph of the installation jig in Embodiment 2 of the present invention. It is a photograph which shows the state by which the installation jig in Embodiment 2 of this invention was suspended with the crane. It is a photograph which shows the state which attached the installation jig to the revetment block in Embodiment 2 of this invention, and was suspended with the crane. It is a photograph which shows the installation process of the revetment block in Embodiment 2 of this invention. It is a photograph of the landing process of the revetment block in Embodiment 2 of the present invention. It is a photograph which shows the state which progress of the installation construction of the revetment block in Embodiment 2 of this invention advanced.

The installation method of the bank protection block which concerns on 1st invention of this invention is the installation method of the bank protection block which installs a bank protection block in a bank protection area,
A penetrating member having a three-dimensional shape and a through-hole in a revetment block having a through-hole, having a first plate member and a second plate member facing each other, and a connecting portion connecting the first plate member and the second plate member. Through, through process,
A communication step of passing a communication member that communicates and fixes a first lower hole provided below the first plate member and a second lower hole provided below the second plate member;
A first wire insertion step of passing one of the wires through an upper hole provided above the connecting portion;
A second wire insertion step of passing the other of the wires through a fixing hole provided in one of the communication members;
A lifting step of lifting the wire through the first wire insertion step and the second wire insertion step with a crane;
An installation process for installing the revetment block lifted in the lifting process at a predetermined position in the revetment area,
The penetrating member has a shape and a size such that the first plate member and the second plate member protrude from above and below the through hole.
With this configuration, it is possible to perform a construction for installing a revetment block in a short construction period and with minimal human work.

In the revetment block installation method according to the second invention of the present invention, in addition to the first invention, the revetment block has a thickness thinner than the width in the plane direction,
The through hole penetrates the thickness direction of the revetment block,
The shape in the planar direction can be aligned when the revetment block is arranged in a planar direction with other revetment blocks.

  With this configuration, the revetment block is laid in the revetment area with high durability without orderly worries about missing.

  In the revetment block installation method according to the third invention of the present invention, in addition to the second invention, the revetment block has a dent that allows the communication member to pass through a portion that is a through hole and is in contact with the revetment area. .

  With this configuration, the piercing member can be fixed by the communication member to fix the revetment block, and after installation, the communication member can be easily detached from the ground and the installation jig can be reused any number of times.

  In the revetment block installation method according to the fourth invention of the present invention, in addition to any of the first to third inventions, the penetrating member includes a first plate member and a second plate member facing each other, A connecting portion that connects the first plate member and the second plate member to the H shape, and in the penetrating step, the penetrating member is passed through the H shape in the vertical direction with respect to the through hole.

  With this configuration, the penetrating member is appropriately inserted into the through-hole of the revetment block, and the suspension of the revetment block can be easily realized.

  In the revetment block installation method according to the fifth aspect of the present invention, in addition to any one of the first to fourth aspects, the upper hole is plural.

  With this configuration, the inclination angle of the revetment block can be easily and variously adjusted.

  In the revetment block installation method according to the sixth invention of the present invention, in addition to any one of the first to fifth inventions, the communication member is a convex that cannot penetrate the first lower hole and the second lower hole on one side. The fixing hole is provided in the convex portion.

  With this configuration, the communication member can be combined and fixed with the penetrating member without being detached from the lower hole as long as the communication member is inclined to one side in a state where the lower hole is communicated.

  In the revetment block installation method according to the seventh invention of the present invention, in addition to the sixth invention, the fixing hole is a first upper hole or a second upper hole through which the wire is passed in the first wire insertion step, and It is a diagonal position in the plane direction of the revetment block.

  With this configuration, the revetment block can be tilted and suspended despite the fact that it has only one convex portion. In addition, when the installation is completed, the communicating member and the penetrating member can be easily removed.

  In the revetment block installation method according to the eighth invention of the present invention, in addition to any of the first to seventh inventions, before or after the first wire insertion step and the second wire insertion step, the wire is: It further includes a fixing step of rotating around and fixing to the hanging part of the crane.

  With this configuration, the revetment block can be suspended in a licked state by the crane via the installation jig.

  In the revetment block installation method according to the ninth aspect of the present invention, in addition to the seventh or eighth aspect of the invention, in the suspending step, the revetment block has a convex portion of the communicating member that is downward in the horizontal direction. The communication member is inclined so that

  With this configuration, the installation jig does not come off and the revetment block does not fall. In addition, the communication member and the penetrating member can be immediately removed and reused after the revetment block is installed.

  In the revetment block installation method according to the tenth aspect of the present invention, in addition to the ninth aspect, the inclination of the communication member substantially coincides with the inclination of the revetment block.

  With this configuration, it is possible to greatly reduce the labor of adjustment work for aligning the revetment block to the inclination with respect to the installation location.

  In the revetment block installation method according to the eleventh aspect of the present invention, in addition to the tenth aspect, the crane suspends the position of the wire connected through the first insertion step and the second insertion step. By adjusting in step, an inclination adjustment step of adjusting the inclination of the communication member is further provided.

  With this configuration, the inclination of the revetment block can be easily adjusted.

  In the revetment block installation method according to the twelfth aspect of the present invention, in addition to the eleventh aspect, the inclination of the revetment block is adjusted in accordance with the inclination of the revetment area.

  With this configuration, the tilt adjustment is finished when installing.

  In the revetment block installation method according to the thirteenth aspect of the present invention, in addition to the eleventh or twelfth aspect, in the first wire insertion step, one of the plurality of first upper holes and the plurality of second upper holes. Further, the wire is inserted, and further adjustment by tilt adjustment is made.

  With this configuration, the adjustment width of the revetment block can be further increased, and fine adjustment can be facilitated.

  In the revetment block installation method according to the fourteenth aspect of the present invention, in addition to the first to thirteenth aspects, the revetment block adjusted to the inclination corresponding to the inclination of the revetment area by the inclination adjustment step is added to the revetment area. And a landing process for landing on the vehicle.

  With this configuration, the revetment block is installed in the revetment area.

  The revetment block installation method according to the fifteenth aspect of the present invention, in addition to the fourteenth aspect, further includes a drawing step in which the communication member is pulled out from the first lower hole and the second lower hole after the landing step. .

  With this configuration, the communication member can be removed immediately and processing after installation can be performed.

  In addition to the fifteenth invention, the method for installing a revetment block according to the sixteenth invention of the present invention further includes a removing step in which the penetrating member is removed from the through hole after the drawing step.

  With this configuration, the installation jig can be reused.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  (Embodiment 1)

(Situation requiring a revetment block)
First, with reference to FIGS. 1 and 2, an environment and situation where installation work for installing a revetment block is required will be described. FIG. 1 is a perspective view of a coast where revetment is required in Embodiment 1 of the present invention. The coast 1 in FIG. 1 has a low-lying part 2 above sea level and close to the sea surface, and a high-altitude part 3 that is raised to cope with tsunami and high waves. By having such a lowland portion 2 and a highland portion 3, an oblique slope 4 connecting them is formed. Such high altitude parts 3 and slopes 4 may occur in the natural natural topography. Alternatively, it may be artificially formed to cope with tsunamis, storm surges, high waves, river flooding, and the like.

  In particular, in the Great East Japan Earthquake in 2011, construction to raise coast 1 is being promoted on the Pacific side of the Tohoku region as a countermeasure against tsunami.

  Of course, the topography shown in FIG. 1 is not limited to the coast 1 but may be a lake or a river.

  In this way, the slope 4 is naturally formed by forming the highland portion 3 in order to raise the coast 1 and the like. As shown in FIGS. 1 and 2, the slope 4 has an oblique aspect from the highland portion 3 to the lowland portion 2. For example, when a tsunami, a storm surge, a high wave, or the like is approached, the slope 4 may be destroyed by these pressures. The highland part 3 is formed while the slope 4 is constructed. For this reason, the slope 4 is generated. This slope 4 soil is exposed. For this reason, it is easily destroyed by pressure such as tsunami.

  If the slope 4 is destroyed, the high altitude portion 3 is naturally damaged, and the profit in the high altitude construction cannot be obtained. For this reason, a construction for protecting the slope 4 as shown in FIG.

  FIG. 2 is a perspective view showing installation work of a revetment block in Embodiment 1 of the present invention. In order to protect the slope 4 formed in FIG. 1, a construction is carried out in which a revetment block 10 having strength, hardness and weight such as concrete and capable of mass production is laid on the slope 4. Is done. This is the state shown in FIG.

  As shown in FIG. 2, the revetment block 10 is arranged on the slope 4 so as to be spread. By the installation work of the revetment block 10, the exposure of the soil on the slope 4 is prevented, and the destruction of the slope 4 is prevented by the pressure at the time of disaster such as tsunami, storm surge, and high wave. If the destruction of the slope 4 is prevented, the destruction of the highland portion 3 is also prevented, and it is possible to prevent the highland construction from returning to nothing.

  As shown in Fig. 2, in Japan, where there are many water-related disasters, installation work to install the revetment block 10 on the coast 1 and lakeside and riverside slopes 4 is urgent and will continue in the future. To go.

  In such installation work of the revetment block 10, naturally, a heavy machine such as a crane is used to accurately install the revetment block 10, which is a heavy object, on the slope 4. FIG. 3 is a photograph showing the state of the revetment block installation work using the crane according to Embodiment 1 of the present invention.

  As can be seen from the photograph in FIG. 3, the revetment block, which is a heavy object, is installed on the slope 4 by repeating a procedure such as lifting, hanging, moving, descending, and setting by a crane that is a heavy machine. In the prior art, the installation work of revetment blocks using these cranes has a long working time, difficulty, or danger due to the skill level of crane operation and the large amount of human work other than crane operation. It was.

  As can be seen from the photograph in Fig. 3, the slope is a plane that connects the lowland area and the highland area. However, depending on the situation of the highland construction, the original topography, geology, and stability, the slope angle, width, There are various sizes. Of course, the geology of the slopes varies, and the number of revetment blocks required varies. In this respect as well, there were difficulties and dangers in the construction of revetment blocks. As a result, the construction period and cost of the revetment block installation work became high, and there was a problem that the work that needed to be rushed did not proceed easily.

  The installation method of the revetment block of this invention can reduce these difficulties and dangers, and can reduce a construction period and cost.

(Overview)
First, an overall outline of the method for installing a revetment block in the first embodiment will be described.

  The coast 1 where the revetment block 10 is installed has a terrain as shown in FIGS. 1 and 2, and a slope 4 as shown in FIGS. 1 and 2 is formed.

(Revetment block)
First, the revetment block 10 used for the installation method of the revetment block in Embodiment 1 is demonstrated. FIG. 4 is a schematic diagram of a revetment block according to Embodiment 1 of the present invention. FIG. 4 shows a state where the revetment block 10 is viewed from the top, front, and side surfaces.

  The upper left of FIG. 4 has shown the upper surface of the revetment block 10, the lower left has shown the front, and the right side has shown the side. The state where the same revetment block 10 was seen from a different direction is shown, respectively, and the structure of the revetment block 10 is shown in an easy-to-understand manner.

  In addition, the revetment block 10 shown by FIG. 4 is an example, and is not limited to this shape and structure.

  The revetment block 10 has the recessed parts 12 and 13 in the outer periphery. By having the recesses 12 and 13, it is possible to increase the combined strength after installation by combining adjacent revetment blocks. Of course, the strength and durability of the seawall block 10 as a single unit can be increased. Therefore, the recesses 12 and 13 have the same shape at the same position in each of the plurality of revetment blocks 10, and when the plurality of revetment blocks 10 are two-dimensionally arranged in the plane direction, the recesses 12 and 13 Can be combined and aligned.

  Moreover, the revetment block 10 has thickness thinner than the width | variety of a plane direction. In addition, the revetment block 10 includes a through hole 15 penetrating in the thickness direction near the center thereof. Furthermore, it has the dent 16 which can let the communicating member mentioned later pass in the site | part which contact | connects the bottom face of this through-hole 15, and the bottom face of the revetment block 10 (namely, slope 4 which is a revetment area).

  The revetment block 10 is preferably made of concrete or reinforced concrete in consideration of weight, but other materials may be used.

(Penetrating member)
The revetment block 10 is lifted by a crane and installed on the slope 4 which is a revetment area. An installation jig for lifting with a crane is required. FIG. 5 is a top view of the installation jig in the first embodiment. The installation jig 50 is an H-shaped member. When viewed from above as shown in FIG. 5, it has an H-shape. Of course, it is not limited to the H type, and may have other appearances.

  The installation jig 50 includes a first plate member 21 </ b> A and a second plate member 21 </ b> B facing the first plate member 21 </ b> A corresponding to be inserted into the through hole 15 of the revetment block 10. The first plate member 21 </ b> A and the second plate member 21 </ b> B have connection portions 22 that are connected so as to be H-shaped when viewed from the side in a state of facing each other. The first plate member 21A, the second plate member 21B, and the connecting portion 22 that connects them so as to face each other form the outer shape of the H-shaped installation jig 50 and are inserted into the through hole 15. Member 20 is formed.

  In FIG. 5 and other drawings, holes are provided in the first plate member 21 </ b> A, the second plate member 21 </ b> B, and the connection portion 22, but this is for reducing the weight of the penetrating member 20.

  Moreover, the stopper 23 is provided in each upper part of 21 A of 1st board members, and the 2nd board member 21B. The stopper 23 is a stopper for preventing the penetrating member 20 from coming out below the through hole 15 when the penetrating member 20 is inserted from above the through hole 15. Since the stopper 23 is hooked on the edge of the through hole 15, when the penetrating member 20 is inserted from above the through hole 15, the stopper 23 is caught on the edge of the through hole 15 and does not fall off.

  FIG. 6 is a front view of the penetrating member as viewed from the first plate member 21A according to the first embodiment of the present invention. When viewed from the first plate member 21A, the penetrating member 20 looks like a plate having the opposite second plate member 21B as the far side. The same applies to the second plate member 21B.

  Here, a first lower hole 26A and a second lower hole 26B are provided below each of the first plate member 21A and the second plate member 21B. As shown in FIG. 7, when the penetrating member 20 is viewed from the front so that the connection portion 22 is the front, the first lower hole 26A is provided below the first plate member 21A on each of the left and right. The second lower hole 26B is provided below the second plate member 21B.

  The first lower hole 26A and the second lower hole 26B are used for communicating a communication member 30 described later. Note that holes other than the first lower hole 26A shown in FIG. 6 are for reducing the weight of the first plate member 21A as described above. The same applies to the second plate member 21B.

  The connecting portion 22 is a plate member that connects the first plate member 21A and the second plate member 21B so as to face each other. FIG. 7 is a front view seen from the connecting portion side of the penetrating member in Embodiment 1 of the present invention.

  The connecting portion 22 can be entirely H-shaped by connecting the first plate member 21A and the second plate member 21B. The connecting portion 22 includes an extension plate 28 at the top thereof. The extension plate 28 is higher in the penetrating member 20 than the first plate member 21A and the second plate member 21B.

  Another member may be attached to the extension plate 28 and the connection portion 22 by welding or adhesion, or may be formed integrally with the connection portion 22 that is a plate member.

  The extension plate 28 has an upper hole 27 through which a wire necessary for lifting with a crane described later is passed. The upper hole 27 is paired with a fixed hole provided in the communication member 30 to allow the wire to pass therethrough and to be suspended by the wire.

  As shown in FIG. 7, a plurality of upper holes 27 may be provided in the extension plate 28. In FIG. 7, three upper holes 27, upper holes 27A, 27B, and 27C, are provided. Of course, the upper hole 27 may be one or a number other than three. However, by providing a plurality of upper holes 27 such as three upper holes 27A, 27B, and 27C as shown in FIG. 7, the position of the upper hole 27 through which the wire passes can be changed. By this position change, the angle of the wire passing through the fixed hole can be changed, and the lifting angle and the lifting position of the revetment block 10 can be adjusted.

  The penetrating member 20 may be formed of a metal such as iron or an alloy. This is because the revetment block 10 which is a heavy object is lifted and further installed on the slope 4 so that strength and durability are required. Of course, as will be described later, the penetrating member 20 can lift and install the revetment block 10 together with the communication member 30. Since the revetment block 10 can be installed by a combination of the penetrating member 20 and the communication member 30, if the penetrating member 20 and the communication member 30 are removed, the installation jig 50 constituted by these can be reused.

  Such re-use is also possible to reduce the cost of installation work.

(Communication member)
FIG. 8 is a side view of the communication member according to Embodiment 1 of the present invention. The communicating member 30 is fixed so that the penetrating member 20 inserted into the through hole 15 does not come out from above the through hole 15. In other words, the penetrating member 20 inserted by the communication member 30 does not come out from below the revetment block 10.

  The communication member 30 includes a main body 31, a convex portion 32, and a fixing hole 33 provided in the convex portion 32. FIG. 8 shows this structure.

  The communication member 30 is inserted so as to connect the first lower hole 26 </ b> A and the second lower hole 26 </ b> B of the through member 20 inserted into the through hole 15. At this time, it is naturally inserted into the lower hole 26 from the direction in which the convex portion 32 does not exist, and after the insertion, the convex portion 32 is outside either the first lower hole 26A or the second lower hole 26B. Get caught.

  In this state, the communication member 30 communicates the first lower hole 26A and the second lower hole 26B. In addition, the main body 31 of the communication member 30 has a length longer than the length of the recess 16 of the revetment block 10. As a result, the inserted communication member 30 can be made to be surely caught under the recess 16 of the revetment block 10.

  The communication member 30 is inserted into the first lower hole 26 </ b> A and the second lower hole 26 </ b> B that appear in the space of the recess 16 of the revetment block 10 when the penetrating member 20 is inserted from above the through hole 15. It is communicated by this insertion.

  If communicated, the communicating member 30 can fix the penetrating member 20 below the through hole 15. In particular, since the communication member 30 is installed in the recess 16 of the revetment block 10, the communication member 30 is installed along the recess 16 (extending linearly below the revetment block 10) and fixed. It becomes.

  FIG. 9 is a front view showing a state where the communication member is inserted into the penetrating member according to the first embodiment of the present invention.

  As described above, the communication member 30 passes the first lower hole 26A of the first plate member 21A of the penetrating member 20 and the second lower hole 26B of the second plate member 21B.

  That is, the communication member 30 is inserted from the first lower hole 26A, and the insertion is completed through the second lower hole 26B. Furthermore, the communication member 30 is in a state in which the convex portion 32 is caught in the first lower hole 26A, and the state in which the communication member 30 is pulled out from the second through hole 26B is prevented.

  By being in the state shown in FIG. 9, the penetrating member 20 and the communication member 30 are combined to form the installation jig 50. The installation jig 50 is inserted into the through-hole 10 of the revetment block 10 and then installed on the slope 4 which is a revetment area by lifting and suspending with a crane.

  The installation jig 50 shown in FIG. 9 is inserted into the through hole 10 of the revetment block 10 with such a state as the vertical direction. Therefore, the upper hole 27A and the like are exposed from above the through hole 10, and the communication member 30 supports the revetment block 10 from below along the recess 16 of the revetment block 10 below the through hole 10. Fulfill.

(Installation method)
With the installation jig 50 described above, a plurality of revetment blocks 10 are installed in an orderly manner on the slope 4 which is a revetment area. At this time, a crane is used as shown in FIG. Of course, the crane is a general name of a heavy machine for lifting the revetment block 10 as an object, and is a generic name. It is not intended to exclude things that are not called cranes due to the type of heavy machinery or the particularity of the name.

  Below, the installation method of the revetment block 10 is demonstrated.

(Penetration process)
First, a penetration process is performed.

  FIG. 10 is a schematic diagram showing a penetration step in the first embodiment of the present invention. The penetrating member 20 described with reference to FIG. 5 and the like is inserted into the through hole 15 of the revetment block 10. When inserted, since the revetment block 10 is placed in the storage location, the penetrating member 20 may be inserted from above the through hole 15.

  FIG. 10 shows a state after the penetrating member 20 is inserted into the through hole 15 from above. Here, the positional relationship is such that the first plate member 21A comes to the front side. For this reason, the first lower hole 26 </ b> A below the first plate member 21 </ b> A is exposed in the recess 16 of the revetment block 10. On the back side of FIG. 10, the second lower hole 26 </ b> B below the second plate member 21 </ b> B is similarly exposed in the recess 16 of the revetment block 10.

  In addition, the penetrating member 20 is inserted from above the through hole 15. For this reason, the stopper 23 provided in each of the first plate member 21 </ b> A and the second plate member 21 </ b> B is caught by the edge of the through hole 15, and the through member 20 does not fall out from below the through hole 15. It is like that.

  In this way, a penetrating process in which the penetrating member 20 is first inserted into the through hole 15 is performed. Of course, the entire H-type formed of the first plate member or the like is smaller than the through hole 15, and the through member 20 can be inserted into the through hole 15.

  The penetrating process may be performed manually or by penetrating the penetrating member 20 with a heavy machine such as a crane.

  By performing this penetrating process, the first step for lifting the revetment block 10 is completed.

(Communication process)
FIG. 11 is a schematic diagram showing a state after the communication step in the first embodiment of the present invention.

  It is necessary to fix the penetrating member 20 so that the penetrating member 20 does not come out of the through hole 15 after the penetrating process in which the penetrating member 20 is penetrated through the through hole 15. Here, the first lower hole 26 </ b> A and the second lower hole 26 </ b> B are exposed in the recess 16 of the revetment block 10. The communication member 30 is inserted from either the first lower hole 26A or the second lower hole 26B.

  By this insertion, the first lower hole 26 </ b> A and the second lower hole 26 </ b> B are communicated by the communication member 30. This is a communication process.

  Due to the communication step, the convex portion 32 of the communication member 30 is caught on the outer side of either the first lower hole 26A or the second lower hole 26B. For this reason, the communication member 30 will be in the state which can be pulled out only from either the 1st through-hole 26A or the 2nd through-hole 26B.

The revetment block 10 is licked and transported by fixing the wire described later. At this time, as for the communicating member 30, the convex part 32 becomes an upper side in a horizontal surface like FIG. 13 mentioned later. The communication member 30 communicates the first lower hole 26A and the second lower hole 26B. At this time, the space between the main body 31 of the communication member 30 and the first lower hole 26A and the second lower hole 26B. It is in close contact with an elastic body like rubber.
For this reason, even if the convex part 32 becomes an upper side with a horizontal surface, the communication member 30 does not fall out from the 1st lower hole 26A and the 2nd lower hole 26B which have passed. On the contrary, after the revetment block 10 is installed, the convex portion is positioned above the slope 4 (FIG. 19 described later), so that the communication member 30 can be easily pulled out to finish the work.

  Through the communication process, the installation jig 50 including the penetrating member 20 is fixed inside the through hole 15.

(First wire insertion process)
FIG. 12 is a schematic diagram showing a first wire insertion step in the first embodiment of the present invention. In the communication step shown in FIG. 11, the installation member 50 is fixed to the through hole 15 by combining the through member 20 and the communication member 30.

  When the installation jig 50 is lifted by a crane, the revetment block 10 is lifted and an installation operation is performed in which it is installed at a predetermined position on the slope 4.

  First, the first wire 61 connected to the crane is passed through any one of the upper holes 27A, 27B, and 27C provided above the connecting portion 22 of the penetrating member 20. In FIG. 12, the first wire 61 is passed through the upper hole 27A. The way of passing the first wire 61 is the same as the way of passing through and fixing a general wire.

  The state where the first wire 61 connected to the crane first pulls up the penetrating member 20 is prepared by the first wire insertion step.

  Note that the first wire 61 may be passed through one of the upper holes 27B and 27C instead of the upper hole 27A depending on the balance with the second wire 62 described later.

(Second wire insertion process)
Next, the second wire 62 is passed through the fixing hole 33 of the communication member 30. This is the second wire insertion step. Similarly to the first wire 61, the second wire 62 is a wire connected to the crane.

  Since the 2nd wire 62 is penetrated by the fixing hole 33, as FIG. 12 shows, it will be penetrated below the installation jig 50 (below the seawall block 10), and will become a wire which has a fulcrum.

  On the other hand, since the first wire 61 inserted in the first wire insertion step is inserted into the upper hole 27, the first wire 61 has a fulcrum above the installation jig 50 (above the revetment block 10).

  As is clear from FIG. 12, the first wire 61 and the second wire 62 are combined to form a state where fulcrum points are formed above and below the revetment block 10.

(Fixing process)
Each of the first wire 61 and the second wire 62 has its tip connected to a crane. At this time, one end of the 1st wire 61 and the 2nd wire 62 is attached to the hanging part which a crane has. By this attachment, the first wire 61 and the second wire 62 attached in the first wire insertion step and the second wire insertion step are fixed to the crane. In addition, the length balance between the first wire 61 and the second wire 62 is determined based on the suspended portion of the crane. This is the fixing process.

(Lifting process)
Next, the first wire 61 and the second wire 62 are lifted by a crane to which the first wire 61 and the second wire 62 are connected. This is the lifting process.

  FIG. 13 is a schematic diagram showing a lifting process in the first embodiment of the present invention. Both the 1st wire 61 and the 2nd wire 62 are connected to the crane, and the 1st wire 61 and the 2nd wire 62 are lifted when the crane lifts the upper connection point which connected these.

  As described in FIG. 12, when the revetment block 10 is lifted as shown in FIG. 13, the convex portion 32 of the communication member 30 is lifted so as to be positioned upward in the horizontal plane.

  As described above, the revetment block 10 itself is fixed and caught by the penetrating member 20 passed through the through hole 15. As a result, even if it is suspended by the wires 61 and 62, it does not fall. Fixing the stopper 23 also helps with this.

  On the other hand, the communication member 30 connects the first lower hole 26 </ b> A and the second lower hole 26 </ b> B and plays a role of fixing the penetrating member 20 to the revetment block 10. At this time, the main body 31 of the communication member 30 is in close contact with the inside of the hole by an elastic body such as rubber on the inner periphery of the first lower hole 26A and the second lower hole 26B. For this reason, even if the convex part 32 which looks like a kind of stopper is the upper side, the communication member 30 does not fall off.

  In short, the fixing hole 33 of the communication member 30 passes the wire 62 and, in addition, the crane is suspended at an appropriate oblique angle as shown in FIG. As a result, movement and installation are performed in accordance with the inclination of the slope 4.

  At this time, the first wire 61 is passed through the upper hole 27, and the second wire 62 is passed through the fixing hole 33. The first wire 61 and the second wire 62 that are differently passed through the upper and lower portions of the installation jig 50 are lifted simultaneously. In addition, the fixing hole 33 is one side of the communication member 30. That is, it becomes the unbalanced hanging method that the revetment block 10 becomes diagonal.

  FIG. 13 shows this unbalanced state. As a result of this unbalanced state, the revetment block 10 is also in an oblique state. Even in this unbalanced state, as described above, the convex portion 32 of the communication member 30 faces upward in the horizontal plane. Even in this state, the revetment block 10 does not fall due to the close contact between the first lower hole 26A and the second lower hole 26B of the penetrating member 20, the stopper 23, and the communication member 30.

  In this state, the crane transports the revetment block 10 to the slope 4 in a slanted state according to the inclination of the slope 4. After being transported to the slope 4, it is landed and installed on the slope 4 while maintaining the inclination angle.

  Here, if the convex portion 32 of the communication member 30 is in an upward state, the convex portion 32 is on the upper side after being installed on the slope 4 as shown in FIG. As a result, the communication member 30 can be easily removed, and the installation jig 50 can be easily detached from the revetment block 10 and disassembled. That is, it is immediately started to reuse.

  In this oblique state, the crane moves the revetment block 10 that does not fall to the target position of the slope 4. Since the crane lifts the revetment block 10 via the installation jig 50 and hangs by connecting the first wire 61 and the second wire 62, the position of the crane can be adjusted in a stable state.

  Again, by this suspension process, the revetment block 10 is tilted so that the convex portion 32 of the communication member 30 is upward in the horizontal direction, but the revetment block 10 is in a suspended state. It will not fall.

(Installation process)
The crane moves the revetment block 10 that is suspended and adjusted in position to the slope 4 and moves it down. At this time, as shown in FIG. 13, the revetment block 13 is inclined. This oblique angle is various such as the angle between the first wire 61 and the second wire 62 (determined by the respective lengths), selection of the upper hole 27 through which the first wire 61 is inserted, and how to lift the crane with a crane. It can be changed by various means.

  Moreover, it can be easily changed. When changing the angle, there may be manual work by an operator, but the angle between the first wire 61 and the second wire 62 (determined by the respective lengths), the upper direction through which the first wire 61 is inserted. Only mechanical work such as selection of the holes 27 and lifting with a crane can be performed.

  In particular, the upper hole 27 through which the first wire 61 is inserted and the fixing hole 33 through which the second wire 62 is inserted are diagonal positions in the planar direction of the revetment block 10. This is apparent from FIG. For this reason, the relationship between the first wire 61 and the second wire 62 is also diagonal in the revetment block 10. The diagonal angle of the revetment block 10 is changed by changing the length of the first wire 61 and the length of the second wire 62 with reference to the hanging portion to which the crane attaches the wire. Can be made. This can change not only an oblique angle in two dimensions but also an oblique angle in three dimensions.

  Here, the slope 4 has various inclinations depending on the slope 4. The slope is different depending on the type of slope 4 shown in FIG. 1 and the like, and the slope may be different depending on the location on the same slope 4.

  As described above, the inclination of the revetment block 10 can be adjusted by the length balance between the first wire 61 and the second wire 62 by the crane. The inclination (angle) of the revetment block 10 can be adjusted to the inclination of the installation place of the slope 4. This is also because the inclination of the communication member 30 caused by the length balance between the first wire 61 and the second wire 62 coincides with the inclination of the revetment block 10.

  In addition, the crane can adjust the inclination of the communication member 30 (the revetment block 10) not only by the length balance between the first wire 61 and the second wire 62 but also by the positional relationship at the hanging portion.

  By adjusting the inclination of the communication member 30, that is, the revetment block 10, it is possible to easily match the inclination with the slope 4 where the revetment block 10 is installed.

  Moreover, in the 1st wire insertion process, the further fine adjustment in the inclination adjustment of the revetment block 10 can also be enabled by selecting which of the upper holes 27A to 27C the first wire 61 is inserted. .

(Installation)
The revetment block 10 is installed at a target location while the crane actually lowers the revetment block through the installation process. At this time, since the inclination of the revetment block 10 is adjusted to the inclination of the slope 4, it does not become a destructive installation that falls to the slope 4 at the time of installation. As a result, the slope 4 is not easily damaged, and the safety of ground workers is also achieved. Of course, since it is not a violent drop installation, the problem of installation in a location deviating from the target location is reduced.

  These steps are repeated, and the revetment blocks 10 are successively installed on the slope 4 by the last installation step, so that the necessary number of revetment blocks 10 are installed in the entire revetment area as shown in FIG. .

  This actual installation on the slope 4 may be grasped as a landing process. After the landing process, it is possible to easily and immediately remove the communicating member 30 and remove the penetrating member 20 by using the convex portion 32 of the communicating member 30 facing the upper side of the slope 4.

(Removal of communication member)
When the revetment block 10 is installed on the slope 4, the first wire 61 and the second wire 62 are removed from the respective holes. Moreover, although the revetment block 10 is contacting the ground side, since the recessed part 16 of the bottom face of the revetment block 10 is in the state separated from the ground, the communication member 30 is not pressed against the ground.

  At this time, the convex portion 32 of the communication member 30 is removed from above. As described above, since the communication member 30 has the convex portion 32 only on one side, it can be easily removed from the lower hole if it is removed from that side.

  This may be grasped as a drawing process of the communication member 30.

(Removal of penetrating member)
If the communication member 30 is removed, the fixed combination of the penetrating member 20 is released. By this release, the penetrating member 20 can be removed from above the through hole 15. At this time, it may be removed manually, or if the first wire 61 is still inserted through the upper hole 27, the penetrating member 20 may be pulled up and removed by a crane. In addition, although it is the same, insertion into the through-hole 15 of the penetration member 20 may be implement | achieved by the crane after the 1st wire 61 is first penetrated.

  As described above, each of the communication member 30 and the penetrating member 20 can be reused and used for installing the next revetment block 10.

  This may be grasped as a removal process of the penetrating member 20.

(Construction period, cost, etc.)
As described above, the revetment block 10 can be lifted, moved, suspended, and installed only by the combination of the penetrating member 20 and the communication member 30, so that it can be easily and simply performed. In particular, there is little need for ground workers and the work time can be shortened. In addition, since it can be installed as it is with a crane in accordance with the inclination of the slope 4, the installation jig 50 that has been installed with less delicate and cumbersome work such as angle adjustment at the time of installation is immediately removed. Since it can be reused, the preparation time required to continuously install a plurality of revetment blocks 10 can be reduced.

  From the above, the construction period of the installation work of the revetment block 10 can be extremely short as compared with the prior art.

  Moreover, the cost of the installation work of the revetment block 10 can also be reduced by the reduction of human work, the reduction of danger, the reduction of construction period, the ease of adjustment of the installation angle, and the like.

  As described above, it is possible to reduce the construction period and cost of the revetment block installation work in the revetment area where a wide range must be performed in a short period of time. As a result, the efficiency of the entire work can be increased, and the efficiency of the overall revetment work and the elevation work can be improved.

  (Embodiment 2)

  In the second embodiment, the actual construction state will be described using photographs and the like.

  FIG. 14 is a photograph of the installation jig in Embodiment 2 of the present invention. As explained in the first embodiment, it consists of a penetrating member and a communicating member.

  FIG. 15 is a photograph of the installation jig in the second embodiment of the present invention. The state where the communicating member is connected to the penetrating member is shown. By this connection, the function as an installation jig can be exhibited. In the photograph of FIG. 15, in order to make the structure of the installation jig easy to understand, the revetment block is not fitted.

  As shown in the photograph of FIG. 15, the combination of the penetrating member and the communicating member is the basis of the installation jig of the present invention.

  FIG. 16 is a photograph showing a state where the installation jig in Embodiment 2 of the present invention is suspended by a crane. It is suspended by a crane, and the installation jig is slanted so that the revetment block can be tilted. In such a situation, the revetment block can be inclined in accordance with the slope of the slope by the inclination of the installation jig described in the first embodiment.

  FIG. 17 is a photograph showing a state where an installation jig is attached to the revetment block according to the second embodiment of the present invention and suspended by a crane. As described in the first embodiment, the installation jig fixes the revetment block. In this fixed state, the crane can suspend the revetment block. This suspension process is the start of installation.

  FIG. 18 is a photograph showing a revetment block installation process in the second embodiment of the present invention. Following FIG. 17, in order to install the revetment block on the actual slope, the state where the position is aligned is shown. Here, as is clear from the photo, the angle of the revetment block is adjusted to the angle of the slope. For this reason, the work in an installation process and a landing process can be shortened.

  FIG. 19 is a photograph of the landing process of the revetment block according to Embodiment 2 of the present invention. Since it is hung with a crane in a state adjusted to the angle of the slope, the revetment block should be landed on the slope as it is. Due to this landing, the revetment block is actually installed in the revetment area including the slope. In FIG. 19, after the landing process is shown, the convex portion 32 of the communication member 30 faces the slope. The communication member 30 is taken out from here. Thus, the penetrating member 20 becomes free, and the penetrating member 20 can be removed from the through hole 15.

  FIG. 20 is a photograph showing a state in which the progress of the revetment block installation work in the second embodiment of the present invention has progressed. Several revetment blocks are neatly arranged in many places in the revetment area. Under this condition, the protection work by the revetment block in the revetment area will be completed.

  As described above, in the second embodiment, the actual installation work has been described using photographs. As is clear from the working state in these photographs, the revetment block installation method of the present invention has the merit that the construction period and cost can be shortened and the danger can be reduced.

  In addition, the installation method of the revetment block demonstrated in Embodiment 1-2 is an example explaining the meaning of this invention, and includes the deformation | transformation and remodeling in the range which does not deviate from the meaning of this invention.

DESCRIPTION OF SYMBOLS 1 Coast 2 Low-altitude part 3 High-altitude part 4 Slope 10 Revetment block 15 Through-hole 16 Recess 20 Perforation member 21A 1st board member 21B 2nd board member 22 Connection part 23 Stopper 28 Extension part 27 Upper hole 30 Communication member 31 Main-body part 32 Convex part 33 Fixing hole 50 Installation jig 61 First wire 62 Second wire

Claims (16)

A revetment block installation method for installing a revetment block in a revetment area,
The through-hole of the revetment block having a three-dimensional shape and having a through-hole has a first plate member and a second plate member facing each other, and a connection portion for connecting the first plate member and the second plate member. Passing through the penetrating member,
A communicating step of passing a communicating member that communicates and fixes a first lower hole provided below the first plate member and a second lower hole provided below the second plate member;
A first wire insertion step of passing one of the wires through an upper hole provided above the connecting portion;
A second wire insertion step of passing the other of the wires through a fixing hole provided in one of the communication members;
A lifting step of lifting the wire that has undergone the first wire insertion step and the second wire insertion step with a crane;
An installation step of installing the revetment block lifted in the lifting step at a predetermined position in the revetment region, and
The penetrating member has a shape and size such that the first plate member and the second plate member protrude from above and below the through hole. The revetment block has a thickness thinner than the width in the plane direction,
The through hole passes through the thickness direction of the revetment block,
2. The method of installing a revetment block according to claim 1, wherein the shape in the planar direction can be aligned when the revetment block is arranged in a planar direction with another revetment block.   The said revetment block is the installation method of the revetment block of Claim 1 or 2 which has a dent which can let the said connection member pass in the site | part which is the said through-hole and contact | connects the said revetment area | region. The penetrating member includes the first plate member and the second plate member that face each other, and a connection portion that connects the first plate member and the second plate member to an H shape,
The said penetration process is the installation method of the revetment block in any one of Claim 1 to 3 which passes the said penetration member so that it may become the vertical direction with respect to the said through-hole.   The revetment block installation method according to any one of claims 1 to 4, wherein the upper hole is plural. The communication member has a convex portion that cannot pass through the first lower hole and the second lower hole on one side,
The said fixing hole is the installation method of the revetment block in any one of Claim 1 to 5 provided in the said convex part. Before or after the first wire insertion step and the second wire insertion step, the wire further comprises a fixing step which is fixed orbiting hanging portion of the crane, to any one of claims 1 to 6, How to install the revetment block. The said bank protection block is the installation method of the bank protection block of Claim 6 in which the said communication member inclines so that the said convex part of the said communication member may become upper in a horizontal direction in the said lifting process. The revetment block installation method according to claim 8 , wherein an inclination of the communication member substantially coincides with an inclination of the revetment block. The crane further includes an inclination adjustment step of adjusting an inclination of the communication member by adjusting a position of the wire connected through the first insertion step and the second insertion step in the lifting step . The installation method of the revetment block of Claim 9 . The installation method of the bank protection block of Claim 10 with which the inclination of the said bank protection block is adjusted according to the inclination of the said bank protection area. The upper hole is more, in the first wire insertion step, to one of a plurality of said upper hole, that the wire is inserted, a further adjustment in the tilt adjustment step is performed, according to claim 10 Or the installation method of the bank protection block of 11 . The revetment block according to any one of claims 10 to 12 , further comprising a landing step of landing on the revetment area the revetment block adjusted to an inclination corresponding to the inclination of the revetment area by the inclination adjustment step. Installation method. The method of installing a revetment block according to claim 13 , further comprising a drawing step in which the communication member is pulled out from the first lower hole and the second lower hole after the landing step. The revetment block installation method according to claim 14 , further comprising a removal step in which the penetrating member is removed from the through hole after the drawing step. An installation jig used to install a revetment block having a three-dimensional shape and a through hole in a revetment area,
A first plate member and a second plate member which are inserted into the through hole and face each other;
A connecting portion for connecting the first plate member and the second plate member so as to be H-shaped when viewed from above ;
A first lower hole provided below the first plate member;
A second lower hole provided below the second plate member;
An upper hole provided above the connecting portion;
A communication member that enables communication between the first lower hole and the second lower hole;
One of the communication members has a convex portion that does not pass through the first lower hole and the second lower hole,
The convex portion has a fixing hole,
A revetment block installation jig in which a wire can be inserted between the upper hole and the fixed hole.