JP5028464B2 - Water shielding member and structure dismantling method using the same - Google Patents

Description

  According to the present invention, the drilling holes are supplied to the floor surface of the bedrock or concrete structure, and the drilling holes are formed in a row so that the adjacent ones communicate with each other. A water shielding member used to block concrete sludge and drilling water from excavation that flows from a new excavation hole to an existing excavation hole when a new excavation hole is to be formed so as to communicate with the excavation hole. And a structure dismantling method using the same.

  When dismantling bedrock and concrete structures, it is common to use excavators. The excavator is provided, for example, in a direction orthogonal to the floor surface of the structure, and a guide body configured to be movable along the floor surface, and provided in the guide body so as to be movable in the axial direction. A pair of drilling rods that are rotatably provided, a drilling bit that is attached to the tip of the drilling rod, and an axially formed inside of the drilling rod, and drilling water is supplied to the drilling bit. A water supply channel to be supplied, a guide rod that is movably provided in the guide body so as to be parallel to the excavation rod, and suction of the drilling water and concrete sludge formed along the axial direction inside the guide rod And road. The excavation rods are provided with stepped ends so that the excavation bits do not interfere with each other. The outer diameter of each drilling bit is the same, and the interval between the drilling bits is set smaller than the outer diameter of the drilling bit. With each drilling bit, a pair of drilling holes communicated in one drilling. Will be formed.

  Then, the drilling holes are formed in a row while supplying the drilling water, while the drilling water is sucked into the other row and the new drilling holes are formed in the other row from any one of the drilling holes. Grooves are formed in a lattice pattern on the floor of the structure, and the structure is broken into blocks.

JP 2006-161397 A

  However, in the case of the conventional excavator, when a new excavation hole is to be formed in any one of the excavation holes formed in a row so that adjacent ones communicate with each other, There is a problem that the drilling water flows from the newly formed excavation holes to the excavation holes formed in a row without the supplied drilling water being sucked from the suction path of the guide rod.

  Therefore, in view of the above-described problems, the present invention provides a new excavation hole from a newly formed excavation hole when any one of the excavation holes formed in a row is to be formed. An object of the present invention is to provide a water shielding member capable of preventing the drilling water from flowing into the boreholes formed in a row and a structure dismantling method using the same.

  In order to solve the above-mentioned problem, the water-impervious member according to the present invention is provided with the excavation holes 30,... So that the adjacent ones communicate with each other while supplying the drilling water to the floor surface W of the rock or concrete structure. Communicating with any one of the excavation holes 30 formed by the excavator provided with the excavation means formed in a row and the suction means for sucking the concrete sludge and drilling water from the excavation. As described above, when a new excavation hole 30 is to be formed, the concrete sludge and the drill water flowing from the newly formed excavation hole 30 to the excavation holes 30 formed in the row are blocked. A water-blocking member to be used, which is inserted along the axial direction in a contracted state in any one of the excavation holes 30 formed in the row, and filled with a fluid in the inserted state. Inflated and digging Characterized in that it is configured so as to press the inner surface of the hole 30.

  In this case, the water-impervious structure in which the concrete sludge and drilling water flowing from the newly formed excavation holes 30 to the excavation holes 30 formed in a row are inserted into any of the excavation holes 30 formed in a row. Since it is blocked by the member 1, it is not necessary to suck the concrete sludge and the drilling water flowing into the drilling holes 30 formed in a row again, and the excavation work can be performed efficiently.

Further, according to the present invention, the water shielding members 1 , 10 , 100 , 1000 may be constituted by the bag bodies 2, 20, 200, 2000 having the air supply valve 3 and the exhaust valve 4 on the upper part.

  In this case, by supplying air to the bag body 2, 20, 200, 2000, the bag body 2, 20, 200, 2000 expands, and the outer surface of the bag body 2, 20, 200, 2000 is the excavation hole 30. It comes into close contact with the inner surface and can block the flow of concrete sludge and drilled water from the newly formed drilling holes 30 to the drilling holes 30 formed in a row.

  Further, according to the present invention, the bag body 20 has the base end portion 6a fixed to the bottom portion of the bag body 20, and the core member 6 that leads the tip end portion 6b airtightly from the upper portion of the bag body 20 along the axial direction. It is also possible to adopt a configuration that interpolates.

  In this case, it is easy to insert the bag body 20 along the depth direction of the excavation hole 30 by grasping the leading end portion 6 b of the core 6 to be led out, and the bottom of the bag body 20 to the bottom of the excavation hole 30. It is possible to ensure close contact. That is, the bottom portion and the side portion of the bag body 20 are in close contact with the bottom wall portion and the side wall portion of the excavation hole 30 so that the concrete sludge and the drilling water can be reliably blocked.

  Further, according to the present invention, the partition plates 7 and 70 for partitioning into the plurality of filling chambers 200a, ..., 2000a, ... are provided inside the bags 200, 2000, and the filling chambers 200a, ..., 2000a, ... It is also possible to adopt a configuration in which the air supply valve 3 and the exhaust valve 4 are provided respectively.

  In this case, except for the newly formed filling chambers 200a, ..., 2000a, ... located on the side of the excavation hole 30, the remaining filling chambers 200a, ..., 2000a, ..., that is, the filling located on the existing excavation hole 30 side. If the chambers 200a, ..., 2000a, ... are filled with fluid, concrete sludge and drilling water from the newly formed excavation hole 30 can be blocked. On the other hand, fluid is not supplied to the filling chambers 200a,..., 2000a,... Located on the newly formed excavation hole 30 side, that is, the filling chambers 200a,. Then, the bag body 200, 2000 is not damaged by excavating the bag body 2 by the excavating means.

  Moreover, according to this invention, the structure which winds the sheet | seat 8 for protecting the bag body 2 from the excavation operation | movement by the excavation means of an excavator along the outer peripheral surface of the bag body 2 is also employable.

  In this case, since the outer surface of the bag body 2 is protected by the sheet 8, the water-impervious member 1 can be inserted into the desired excavation hole 30 without considering damage due to the excavation operation of the excavating means. That is, the water shielding member 1 can be inserted into the excavation hole 30 at a position optimal for blocking concrete sludge and drilling water flowing from the newly formed excavation hole 30 to the existing excavation hole 30.

  Moreover, according to this invention, you may make it comprise the said water-impervious member 1A with the foam material which expands with concrete sludge and drilling water, and shrinks by compression.

  In this case, the outer surface of the water-impervious member 1 </ b> A is formed in the excavation hole 30 by sucking and expanding concrete sludge and drilling water from the newly formed excavation hole 30 to the excavation holes 30 formed in a row. It comes into pressure contact with the inner surface, and the flow of the concrete sludge and drilling water can be blocked. That is, suction and water shielding of concrete sludge and drilling water can be performed simultaneously.

  Further, the structure dismantling method according to the present invention provides excavation means for forming the excavation holes 30 in a row so as to communicate with each other while supplying drilling water to the floor surface W of the rock or concrete structure. And the excavator provided with the suction means for sucking the concrete sludge and drilling water by excavation, so as to communicate with any one of the excavation holes 30, ... formed in the row, A structure dismantling method in which a grid-like groove 40 is formed in the floor surface W by newly forming the excavation holes 30, ... in the other row, and the structure is dismantled in a block shape. Any of the drill holes 30,... Formed in the row so as to block the flow of the concrete sludge and drilling water from the holes 30,... To the drill holes 30,. Water shielding member 1, 10, 100, 1 Characterized by inserting the 00.

  In this case, the lattice-like grooves 40 can be easily formed on the floor surface W of the bedrock or concrete structure. That is, since it is not necessary to suck again the concrete sludge and the drilling water once sucked, the rock mass and the concrete structure can be easily broken into blocks and disassembled. That is, the workability of excavation work and dismantling work can be improved.

  Further, according to the present invention, when the water shielding member 1 in which a plurality of filling chambers 2a,... Are formed inside the bag body 2 is inserted into any one of the rows of the excavation holes 30,. It is also possible to employ a configuration in which the existing filling chamber 2a on the side of the excavation hole 30 is filled with a fluid excluding the filling chamber 2a on the side where a new excavation hole 30 is to be formed.

  In this case, what is necessary is just to supply a fluid to the filling chamber 2a of a required location, and workability | operativity improves further.

  As described above, according to the present invention, the excavator inserts the water-impervious member contracted into any one of the excavation holes formed in a row, and the inserted excavator is in the inserted state. Since the impermeable member was filled with fluid and expanded to press-contact the inner surface of the drilling hole, the concrete sludge and drilling water from the newly formed drilling hole to the drilling hole formed in a row The flow can be blocked.

  Further, according to the present invention, a new excavation hole is formed in the other row in a state where the above-described water shielding member is inserted into any one of the excavation holes formed in a row. It is possible to block the flow of concrete sludge and drilling water from a newly formed drilling hole, which is caused by a new drilling operation. Therefore, lattice-like grooves can be easily formed on the floor surface of the bedrock or concrete structure. That is, it is possible to improve the efficiency of the dismantling work of the structure.

The figure which shows the water-impervious member which has the bag body with which the air which concerns on one Embodiment of this invention is filled. The figure which shows the grid | lattice-like groove | channel formed in an excavation surface. The explanatory view of the construction method in the case of forming a cross-like groove in the groove of FIG. The explanatory view of the construction method in the case of forming the T-shaped groove in the groove of FIG. The figure which shows the water shielding member which inserted the core material in the bag body of the water shielding member. The figure which shows the water-impervious member which divided the inside of the bag body into two with the partition plate. Explanatory drawing of the usage condition of the water-impervious member of FIG. Explanatory drawing of the usage condition of the water-impervious member which divided the inside of a bag body into four. The figure which shows the water-impervious member which wound the sheet | seat on the outer peripheral surface of a bag body. (A) shows the water-impervious member in a contracted state, and (b) shows the water-impervious member in an expanded state by supplying water from a groove.

  Hereinafter, a water shielding member according to an embodiment of the present invention will be described with reference to FIGS. For excavation, it is assumed that the same excavator described in the background art column is used, and a pair of communicating excavation holes (slots) are simultaneously formed by one excavation. Moreover, about FIG.3 and FIG.4 and FIG.7 and FIG.8, let the upper side and lower side of drawing be the upper side and lower side of the floor surface of a structure.

  As shown in FIG. 1, the water-impervious member 1 according to the present embodiment includes a long and narrow cylindrical bag body 2, and an air supply valve 3 and an exhaust valve 4 on the upper portion of the bag body 2 along a radial direction. Arranged at intervals. The air supply valve 3 and the exhaust valve 4 are provided in communication with the filling chamber 2 a inside the bag body 2. In addition, air is introduced into the air supply valve 3 by a compressor (not shown) connected from the outside, and a check valve (not shown) is provided so as not to leak to the outside when the filled air is supplied. Z).

  The bag 2 is made of a rubber material having elasticity, has a thickness of about 3 to 5 mm, and has a length corresponding to the depth of the excavation hole 30, for example, a length of about 100 to 120 cm. have. And since the bag body 2 is in a contracted state when it is not filled with fluid (air) and is in the form of an elongated sheet, it can be easily inserted into the excavation hole 30. In addition, when the bag 2 is inserted into the excavation hole 30 and the filling chamber 2a of the bag 2 is filled with fluid, the bag 2 expands and becomes a cylindrical shape slightly larger than the inner diameter of the excavation hole 30. And comes into pressure contact with the inner surface of the excavation hole 30. The outer diameter of the bag body 2 when inflated is, for example, about 50 to 100 mm. When replacing the excavation hole 30 at a different position, the air inside the bag body 2 is slightly extracted from the exhaust valve 4 and contracted, and then pulled out from the inserted excavation hole 30 to another excavation hole 30. Insert as it is. Further, after the excavation work is finished, the exhaust valve 4 is opened, all the air inside the bag body 2 is deaerated, the bag body 2 is contracted, and the bag body 2 is taken out from the excavation hole 30.

  Next, a usage mode will be described with reference to FIGS. First, as shown in FIG. 2, drill holes 30,... Are formed in a row on the floor W of the structure so that adjacent ones communicate with each other, and any one of the drill holes 30,. The new excavation holes 30 are formed in other rows starting from the excavation holes 30. In other words, as a result of the formation of the three horizontal grooves 40a,... And the three vertical grooves 40b,. By forming the groove 40 on the floor surface W of the structure, the structure is broken into blocks. When the excavator forms the excavation holes 30,... In the floor W, excavation is performed while supplying the drilling water and simultaneously sucking the concrete sludge and drilling water from the excavation.

  In the lattice-shaped grooves 40, for example, when forming a cross-shaped groove on the floor surface, as shown in FIG. 3, the drilling holes 30, ... (grooves 40a) are formed in a line in order from the left to the right of the drawing. Then, of the excavation holes 30,..., The upper excavation holes 30, 30 (grooves 40 b) are formed starting from the central excavation hole 30 and directed toward the central excavation hole 30. The side excavation holes 30 and 30 (groove 40b) are formed so as to be separated from the central excavation hole 30. In this case, the water-impervious member 1 inserts the water-impervious member 1 into the pair of excavation holes 30 and 30 sandwiching the excavation hole 30 in the center after the excavation of the excavation holes 30 in the rearmost part of the row is completed. In order to facilitate insertion into the excavation hole 30, the bag 2 of the water shielding member 1 is not filled with air but inserted into the excavation holes 30 and 30 in a contracted state of the bag 2. To do. The reason for selecting the excavation holes 30 and 30 is that when a new excavation hole 30 is to be formed starting from the central excavation hole 30, the concrete sludge and drilling water generated by the new excavation This is because it is formed at an optimal position that does not flow into the existing excavation hole group (groove 40a).

  In addition, when forming a T-shaped groove on the floor surface, as shown in FIG. 4, after forming the excavation holes 30,... (Groove 40a) in sequence from left to right, the excavation holes 30,. Among them, the second excavation hole 30 from the right side is started, and the excavation holes 30,... (Groove 40b) are formed along the downward direction. In this case, the water shielding member 1 is inserted in advance into the second excavation hole 30 from the right side that is the starting point. By doing so, the concrete sludge and drilling water generated by the new excavation do not flow into the existing excavation hole group (groove 40a), and the suction work in the groove 40a can be omitted. In this case, it is considered that the bag body 2 of the water-impervious member 1 is damaged by the rotation of the excavation bit, but as a means for protecting the bag body 2, the fluid pressure filled in the bag body 2 is adjusted. The damage from the excavation bit is avoided by the stretchability of the bag body 2 itself.

  In the case of the above embodiment, the water shielding member 1 is inserted into the excavation hole 30 with the bag body 2 slightly contracted. However, as shown in FIG. You may make it insert with holding the core material 6 inserted along. The core member 6 has a base end portion 6 a fixed to the bottom portion of the bag body 2, and a distal end portion 6 b that penetrates the upper portion of the bag body 2 in an airtight manner and is led out to the outside. By this core material 6, the flexible bag body 2 can be given rigidity, and the bag body 2 can be easily inserted into the excavation hole 30. That is, since the water-impervious member 10 can be reliably inserted into the excavation hole 30, the outer surface of the expanded bag body 2 can be reliably brought into close contact with the inner surface of the bottom wall portion and the side wall portion of the excavation hole 30, It is possible to reliably block the flow of concrete sludge and drilling water. As another means, although not shown, a disk-shaped weight may be fixed to the bottom of the bag body 2 to facilitate the insertion of the bag body 2 in the vertical direction. .

  Moreover, in the case of the said embodiment, although it was set as the water-impervious member 1 in which one filling chamber 2a was formed in the bag body 2, as shown in FIG. 6, the filling chamber was divided into two by the partition plate (flat plate) 7. The water shielding member 100 may be used. In this case, the air supply valves 3 and 3 and the exhaust valves 4 and 4 that are respectively connected to the divided filling chambers 200a and 200a are provided. Thereby, the bag 200 of the water-impervious member 100 can be protected from the rotating excavation bit by filling only the desired filling chamber 200a with the fluid (air). For example, as shown by a solid line in FIG. 7, when a new excavation hole 30 indicated by a broken line is formed in the final excavation hole 30 after the excavation holes 30,. The fluid is not supplied to the filling chamber 200a on the excavation side, and the fluid is supplied only to the filling chamber 200a located on the existing excavation hole 30 side. If it does so, the concrete sludge and drilling water which arise by a new excavation will not flow into the excavation holes 30, ..., ie, the existing excavation hole group (groove 40a) formed in a line.

  Moreover, the water-impervious member 1000 in which the filling chamber is divided into four by the partition plate 70 whose cross section is a cross shape may be used (not shown). It is assumed that an air supply valve and an exhaust valve communicating with each filling chamber 2000a are arranged. In this case, for example, as shown in FIG. 8, a group of excavation holes (groove 40b) formed along the vertical direction and the excavation hole 30 at the rearmost part of the excavation hole group are used as starting points along the horizontal direction. After forming the excavation hole group (groove 40a), when the excavation holes 30 are newly formed on the lower side and the left side starting from the excavation hole 30 located at the intersection, the excavation hole 30 serving as the origin When the water-impervious member 1000 is inserted, each of the four filling chambers 2000a,... Is inserted so as to be positioned vertically and horizontally. Then, only the filling chamber 2000a located in the existing excavation holes 30, ... is filled with fluid, thereby blocking the flow of concrete sludge and drilling water generated by new excavation to the existing excavation hole group. it can.

  Moreover, in the case of the said embodiment, as a means to protect the bag body 2 of the water-impervious member 1 from the excavation bit, it was avoided by adjusting the fluid pressure to be filled and the elasticity of the bag body 2 itself. As shown, the hemp material sheet 8 may be wound around the outer peripheral surface of the bag body 2 so that the bag body 2 is not damaged even if the excavation bit rotates. In this case, the water-impervious member 1 can be inserted into a desired excavation hole 30, for example, an excavation hole 30 adjacent to a newly formed excavation hole 30, without considering damage due to the excavation bit. It gets even better.

  Moreover, in the case of the said embodiment, although it was set as the water-impervious member 1 which has the bag body 2 with which a fluid is filled, the water-impervious member comprised with the raw material (foaming material) which expands by sucking concrete sludge and drilling water 1A may be sufficient. In this case, as shown in FIG. 10 (a), when concrete sludge and drilling water are sucked in, as shown in FIG. The outer surface of 1 comes into pressure contact. It is possible to achieve a synergistic effect of sucking concrete sludge and drilling water from the newly formed excavation hole 30 and preventing inflow.

  DESCRIPTION OF SYMBOLS 1,1A, 10,100,1000 ... Water shielding member, 2,20,200,2000 ... Bag body, 2a ... Filling chamber, 3 ... Air supply valve, 4 ... Exhaust valve, 6 ... Core material, 6a ... Base end Part 6b ... tip part 7, 70 ... partition plate, 8 ... sheet, 30 ... excavation hole, 40 ... lattice-like groove, 40a ... horizontal groove, 40b ... vertical groove, W ... floor surface.

Claims (8)

Drilling means for forming drill holes (30) in a row so as to communicate with each other while supplying drilling water to the floor (W) of the bedrock or concrete structure, and concrete sludge and drill holes by excavation A new excavation hole (30) is formed so as to communicate with any one of the excavation holes (30, ...) formed in a row by an excavator having a suction means for sucking water. ) Is used to block the concrete sludge and drilling water flowing from the newly formed excavation holes (30) to the excavation holes (30, ...) formed in a row. A water component,
It is inserted along the axial direction in a contracted state in any one of the drill holes (30,...) Formed in the row, and in the inserted state, the fluid is filled and expanded to expand the drill holes (30). ) Is configured to be pressed against the inner surface of the water shielding member. The water-impervious member (1,10,100,1000) is characterized by being constituted by a bag (2,20,200,2000) with intake valve to the upper part (3) and exhaust valves (4) The water shielding member according to claim 1.
  The bag (20) has a core (6) inserted along the axial direction, and the core (6) has a base end (6a) fixed to the bottom of the bag (20). The water impervious member according to claim 2, wherein the tip end portion (6 b) is led out in an airtight manner from the upper portion of the bag body (20).   The bag body (200, 2000) includes partition plates (7, 70) for partitioning the interior into a plurality of filling chambers (200a, ..., 2000a, ...) along the axial direction. The water-impervious member according to claim 2, wherein an air supply valve (3) and an exhaust valve (4) are respectively provided in (200a, ..., 2000a, ...).   In the bag body (2), a sheet (8) for protecting the bag body (2) from excavation operation by the excavating means of the excavator is wound along the outer peripheral surface of the bag body (2). The water-impervious member according to claim 2.   2. The water-impervious member according to claim 1, wherein the water-impervious member (1 </ b> A) is formed of a foam material that expands by sucking concrete sludge and drilling water and contracts by compression. Drilling means for forming drill holes (30) in a row so as to communicate with each other while supplying drilling water to the floor (W) of the bedrock or concrete structure, and concrete sludge and drill holes by excavation A new excavation hole (30) is formed so as to communicate with any one of the excavation holes (30,...) Formed in a row by an excavator having a suction means for sucking water. ,...) Are formed in other rows to form a lattice-like groove (40) on the floor surface (W) and disassemble the structure into blocks,
Excavation holes (30) formed in the row so as to block the flow of the concrete sludge and drilling water from the excavation holes (30, ...) in the other row to the excavation holes (30, ...) formed in the row. ,...), The water shielding member (1, 10, 100, 1000) according to any one of claims 1 to 6 is inserted.   When the water shielding member (100, 1000) according to claim 4 is inserted into any one of the row of excavation holes (30,...), The bag is formed inside the bag body (200, 2000). Of the plurality of filling chambers (200a,..., 2000a,...), Existing excavation holes (30) excluding the filling chambers (200a,..., 2000a,...) On the side where new excavation holes (30) are to be formed. 30) The structure disassembling method according to claim 7, wherein a fluid is filled in the filling chambers (200a, ..., 2000a, ...) on the side.

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