JP5835999B2 - Through-hole repair method - Google Patents

Description

The present invention closes the through-hole when the hole penetrates the wall of the structure that comes into contact with water etc. on one side from the construction surface side and applies shear reinforcement. It relates holes repair method using a closure plug to prevent flow from the hole in the construction surface side.

  Conventionally, as a method of applying shear reinforcement to a wall of a structure, a long hole for inserting a bottomed shear reinforcement material is formed toward the inside of the wall using a rotary tool such as a drill, and shearing is performed inside the long hole. It is known that a reinforcing material is inserted and disposed, and a filler is filled and solidified in a gap between the long hole and the shear reinforcing material. In this construction method, the filler is filled by inserting a shear reinforcement into the long hole and then press-fitting mortar into the gap between the long holes, or a long and narrow filler capsule containing mortar or fluid curable resin. Is placed in the long hole, and a shear reinforcement material is placed, and the filler capsule is pierced and filled at the tip of the shear reinforcement material (see Patent Document 1).

Japanese Patent No. 3932094

  By the way, when applying the above-mentioned shear reinforcement to the wall of the structure, in order to increase the shear strength, a long hole is formed as deep as possible in the wall of the structure, and the shear reinforcement is inserted and solidified. Although it is desirable, there is a case where the long hole is deeply drilled and accidentally penetrated. When the long hole penetrates the wall and becomes a through hole, the wall of the structure is a wall of a structure that comes into contact with water on the opposite side of the construction surface such as a water tank or submerged tunnel of a water and sewage treatment facility. A situation occurs in which water flows into the construction surface side and ejects, and the work of the shear reinforcement work cannot be continued.

  When such a through hole is formed, on the construction surface side of the wall of the structure, measures are taken to stop the water that is ejected by inserting a water stop plug into the long hole to close the opening of the long hole. However, a long hole whose water is stopped by a water stop plug in the vicinity of the construction surface of the long hole cannot be inserted with a shear reinforcement or filled and solidified, and is used as a long hole for shear reinforcement. It becomes difficult. Therefore, it is necessary to separately form a long hole for shear reinforcement to perform shear reinforcement, which causes a problem that the efficiency of the construction work of the shear reinforcement is lowered and the construction cost is increased.

The present invention is proposed in view of the above problems, and when the wall of the structure is a wall of the structure that is in contact with a fluid such as water on the side opposite to the construction surface, a long hole for shear reinforcement is mistakenly formed. When it is penetrated, it is possible to reliably prevent the fluid such as water from being ejected from the through hole to the construction surface side, and it is possible to use the penetrated long hole as a long hole for shear reinforcement, and to provide a through-hole repair method using a closure plug which can improve the reduction of construction cost of the efficiency of the shear reinforcement work.

The through-hole repair method of the present invention is a through-hole repair method that repairs a through-hole formed in the wall of a structure in which a high-pressure fluid pressure is applied to the opposite surface of the shear reinforcement construction surface. The inner member is formed in a tapered shape that gradually increases in diameter toward the distal end side of the through hole, and is provided so as to press the inner member from the outer periphery, and can be radially expanded by retracting the inner member. A closing plug composed of an outer member and a plug attached to the distal end side of the inner member, and a push rod that detachably connects the closing plug to the rear side of the inner member. A first step of pushing to the vicinity of the tip, and a second step of disposing the plug in the vicinity of the tip of the through hole, allowing the plug body to come out of the through hole, and expanding the plug body outside the tip of the through hole. The push rod is retracted to draw the inner member into the outer member, the plug body projects into the through hole, and the plug body closes the end opening of the through hole, and A third step of expanding the outer member to bite into the wall; a fourth step of disconnecting the push rod and recovering the push rod from the through hole; and after the closing plug in the through hole A fifth step of inserting a filler capsule into the side, a sixth step of inserting a shear reinforcement into the through hole to break the filler capsule, and filling the through hole with the filler to solidify; It is characterized by providing.
According to this configuration, the end opening of the through hole is closed with a plug to prevent water leakage into the through hole, and further, the inner member, the outer member that is expanded, and the filler are used to prevent the plug from being blocked. Even if there is water leaking in the through-hole, if the water presses against the inner member, the expansion force of the outer member will be increased by that amount, and the through-hole will be stopped more reliably. It can be reliably prevented from flowing to the side. Therefore, when the structure wall is a structure wall that is in contact with a fluid such as water on the opposite side to the construction surface, when the long hole for shear reinforcement is accidentally penetrated, the construction surface side from the through hole It is possible to more reliably prevent fluid such as water from being ejected. In addition, it is possible to close the through hole near the tip, and it is possible to reuse the long hole penetrated as a long hole for shear reinforcement, improving the work efficiency of shear reinforcement work and reducing the construction cost. Can be planned. Furthermore, the closing plug can be quickly and easily placed at the required position of the through-hole by the push rod detachably connected to the inner member, and after the placement, the push rod is recovered and the through-hole is easily shear-reinforced. Can be performed.

In the through-hole repair method of the present invention, in the third step, the outer member is expanded by retreating the push rod while pressing the rear end portion of the outer member with a cylindrical spacer inserted into the through-hole. And the spacer is recovered from the through hole in the fourth step.
According to this configuration, even when the outer diameter of the outer member is smaller than the hole diameter of the through hole, the outer member is prevented from rotating and displaced, and the inner member is smoothly pulled in and the outer member is expanded at a predetermined position. It can be carried out.

  According to the present invention, when the wall of the structure is a wall of a structure that is in contact with a fluid such as water on the side opposite to the construction surface, when the long hole for shear reinforcement is accidentally passed, It is possible to reliably prevent water and other fluids from being ejected from the surface to the construction surface, and it is possible to use the long hole that penetrates as a long hole for shear reinforcement, improving the work efficiency of shear reinforcement work And can reduce the construction cost.

The longitudinal cross-sectional view of the water storage tank which has the wall by shear reinforcement. Cross-sectional explanatory drawing which shows the state which inserted the filler capsule into the long hole drilled by the shear reinforcement construction of the wall. Cross-sectional explanatory drawing which shows the state which inserted the shear reinforcement material into the long hole by the wall shear reinforcement construction, and filled the long hole with the filler. The longitudinal cross-sectional view which shows the wall of the structure provided with the through-hole repair structure by the obstruction | occlusion plug of 1st Embodiment. (A) is the front view of the obstruction | occlusion plug of 1st Embodiment, (b) is the front view of the outer member, (c) is the side view of the outer member, (d) is the front view of the inner member, (e ) Is a side view of the inner member. (A) is explanatory drawing which shows the through-hole accidentally penetrated to the wall in the through-hole repair method, (b) is explanatory drawing which shows the state by which the obstruction | occlusion plug of 1st Embodiment is inserted in the through-hole, (C) is explanatory drawing which shows the state which rotates the pushing rod inserted in the through-hole with a nut, (d) is explanatory drawing which shows expansion of an outer member. (A) is explanatory drawing which shows collection | recovery of an embedding rod and a spacer in a through-hole repair construction method, (b) is explanatory drawing which shows the obstruction | occlusion plug after collection | recovery of an embedding rod and a spacer, (c) is in an elongate hole An explanatory view showing insertion of a filler capsule, (d) is an explanatory view showing insertion of a shear reinforcement material into the long hole and a breakage of the filler capsule, and (e) is a shear with the filler filled in the long hole. Explanatory drawing which shows the state which reinforcement was completed. (A) is a front view which shows the state which screwed the pushing rod in the obstruction | occlusion plug of 1st Embodiment, (b) is a front view which shows a spacer. (A) is a longitudinal cross-sectional view which shows the state before the expansion of the outer member which screwed the pushing rod in the obstruction | occlusion plug of 1st Embodiment, (b) is a longitudinal cross-sectional view which shows the state after the expansion. (A) is a front view of the obstruction | occlusion plug of 2nd Embodiment, (b) is a front view of the obstruction | occlusion plug of 3rd Embodiment.

[Holes repair method using a closure plug of the first embodiment]
It will now be described through-hole repair method using a closure plug of the first embodiment according to the present invention.

  The through hole repair structure using the plug according to the first embodiment has a shear reinforcement structure on the wall of a structure in which a fluid pressure higher than the construction surface is loaded with a fluid such as water on the surface opposite to the construction surface of the shear reinforcement. Is provided when a long hole for inserting a shear reinforcement is accidentally penetrated. As an example of the structure, for example, a water tank 10 shown in FIG. The water storage tank 10 has a shape in which a flow hole 13 is provided in an upper plate 12 of a box-shaped main body 11, and is surrounded by walls 14 that are concrete walls on its four sides, and contains water W that is a fluid inside. Yes. The outer surface of the wall 14 is a shear reinforcement construction surface 141, and the water pressure of the water W is loaded on the inner surface 142, which is the opposite surface thereof, and the fluid pressure is higher than that of the construction surface 141 loaded with atmospheric pressure. Is loaded.

  In the shear reinforcement structure provided on the wall 14, as shown in FIGS. 2 to 4, a bottom hole 21 for inserting a bottomed shear reinforcement material from the construction surface 141 toward the inside of the wall 14 by a rotary tool such as a drill. Are formed, and a long and narrow filler capsule 22 containing mortar or fluid curable resin is disposed in each elongated hole 21, and the filler capsule is formed at the tip of the shear reinforcement 23 placed in the elongated hole 21. The filler 24 is filled and solidified in the long hole 21 by breaking through 22.

  The filler capsule 22 in the illustrated example can absorb water therein, and a dry cement mortar is accommodated therein as the filler 24. The filler capsule 22 is immersed in the water W1 in the water storage tray 31 and absorbed by the filler 24, and then inserted into the elongated hole 21. Thereafter, a shear reinforcement member 23 made of deformed steel bar or the like is driven into the elongated hole 21 by a hammer or the like, the filler capsule 22 is broken at the tip of the shear reinforcement member 23 and the filler material 24 flows out, and the shear reinforcement member 23 is disposed in the long hole 21, and a cement mortar filler 24 is filled in the gap between the long hole 21 and the shear reinforcement 23 and solidified.

  If the through hole 41 is formed by penetrating the long hole 21 up to the inner side surface 142 by mistake, the blocking plug 50 is arranged as a water stop plug near the tip of the through hole 41 so that the through hole 41 is formed. In addition to being closed, the soaked filler capsule 22 is inserted and disposed on the rear side of the closing plug 50 in the through hole 41, and a shear reinforcing material 23 made of deformed bar steel or the like is placed in the through hole 41 to provide shear reinforcement. The filler capsule 22 is broken at the tip of the material 23 to cause the filler 24 to flow out, and the shear reinforcing material 23 is disposed in the through hole 41 and cemented into the gap between the through hole 41 and the shear reinforcing material 23. By filling and solidifying the mortar filler 24, the repair of the through hole 41 and the placement of the shear reinforcement 23 are performed simultaneously.

  As shown in FIGS. 5 and 9, the blocking plug 50 includes a substantially frustoconical inner member 51 formed in a tapered shape that gradually increases in diameter toward the distal end side of the through hole 41, and the inner member 51. A substantially cylindrical outer member 52 provided on the outer periphery of the rear portion of the small-diameter side and engaged so as to press the inner member 51 from the outer periphery, and a disc-shaped plug attached to the distal end side of the inner member 51 53.

  The inner member 51 has a small-diameter female screw 511 formed at the front, and a female screw 512 larger in diameter than the female screw 511 at the rear. A male screw 541 of a mounting bolt 54 that passes through the center of the disk-shaped plug body 53 is screwed into the female screw 511, and the plug body 53 is attached to the distal end side of the inner member 51. The pusher bar 60 is detachably connected to the rear female screw 512 by screwing the front male screw 61 of the pusher bar 60 that pushes the closing plug 50 into the distal end side of the through hole 41 (see FIGS. 6 to 9). .

  The outer member 52 can be radially expanded by retracting the inner member 51, and the plurality of arc-shaped plates 521 are arranged in a cylindrical shape, and are bound by a coil spring 524 that is a circumferential member in the arranged state. Configured.

  The arc-shaped plate 521 has an inclined surface 522 that is inclined so as to expand forward at the inner front portion, and presses the tapered outer peripheral surface of the inner member 51 by the inclined surface 522 of the arc-shaped plate 521 arranged in a circumferential shape. It is supposed to be. Further, a groove that forms a spiral groove 523 when provided in a cylindrical shape is provided on the outer periphery of the arc-shaped plate 521, and the coil spring 524 is fitted along the spiral groove 523, and the cylindrical shape is formed by the coil spring 524. Arranged arcuate plates 521 are bound together. The spiral groove 523 and the coil spring 524 are provided over substantially the entire length of the outer member 52, and each arcuate plate 521 in a cylindrical arrangement is bound over substantially the entire length.

  The plug body 53 has a disk shape with a mounting bolt 54 penetrating in the center, and is inserted into the through hole 41 in response to the closing plug 50 being pushed into the distal end side of the through hole 41, and the distal end of the through hole 41 is pulled out. The front end opening 411 of the through hole 41 can be closed by expanding outside. The plug body 53 is formed of an elastic material such as chloroprene rubber, and can be deformed so that a portion corresponding to the tip opening 411 of the through hole 41 of the plug body 53 protrudes to the inside of the through hole 41. .

  The plug body 53 is appropriate as long as it is capable of closing the tip opening 411 and projecting and deforming into the through-hole 41. For example, other than chloroprene rubber or a water-expandable rubber combining chloroprene rubber and other materials. Further, it can be formed of a water-absorbing polymer, a material combining a water-swelling rubber and a water-absorbing polymer, or a material such as bentonite that expands with water.

  The closing plug 50 retracts the inner member 51 by retreating the above-described embedding rod 60, closes the distal end opening 411 with the plug body 53 so as to project the plug body 53 into the through hole 41, and the outer member 52. The outer member 52 can be expanded by retracting the inner member 51, and the outer peripheral surface of the outer member 52 or the outer peripheral surface of the outer member 52 and the coil spring 524 can be bitten into the wall 14. Is possible.

  Next, a detailed construction procedure of the through-hole repair method using the closing plug 50 of the first embodiment will be described.

  As a premise, as shown in FIG. 6 (a), this through-hole repair method is formed in front of the original hole bottom 143 when a long hole 21 for inserting a shear reinforcement is formed in the wall 14 of the water tank 10. This is performed to repair the through-hole 41 when the through-hole 41 is formed by being perforated by mistake. Since the inner surface 142 of the wall 14 is loaded with the water pressure P of the water W and is subjected to a higher fluid pressure than the construction surface 141 loaded with atmospheric pressure, the through hole 41 is left as it is. Water enters the inside and the water leakage LW leaks from the construction surface 141 side.

  In order to prevent this water leakage LW, the closing plug 50 is pushed into the vicinity of the tip of the through hole 41. When the closing plug 50 is pushed in, as shown in FIGS. 6B and 8, the front male screw 61 of the push rod 60 is screwed to the male screw 512 on the rear side of the inner member 51, and the push rod is pushed into the closing plug 50. 60 is detachably connected. The push rod 60 is formed by forming a front male screw 61 and a rear male screw 62 at the front end and the rear end, respectively (see FIGS. 6B and 9). In place of this push rod 60, a push rod made up of all screw bolts may be used.

  Then, the closing plug 50 is pushed by the push rod 60 and moved in the through hole 41. At the time of this movement, the vicinity of the periphery of the disk-shaped plug body 53 is bent rearward, and the blocking plug 50 moves in the through hole 41 in this state. The closing plug 50 is finally disposed near the tip of the through hole 41. Further, a cylindrical spacer 70 is inserted into the through hole 41, the spacer 70 is disposed around the push rod 60, and the front end of the spacer 70 is brought into contact with the rear end of the outer member 52 (FIG. 6 ( b), see FIG. In addition, when the hole diameter of the through hole 41 and the outer diameter of the outer member 52 before expansion are substantially the same and the outer member 52 is difficult to move in the through hole 41, the pushing of the closing plug 50 by the pushing rod 60 is performed. At the same time, the closing plug 50 may be moved and disposed at a predetermined position by pressing the rear end portion of the outer member 52 with the spacer 70 and pushing the outer member 52 in.

  When the closing plug 50 is disposed in the vicinity of the tip of the through hole 41, as shown in FIGS. 6C and 9A, the plug body 53 comes out of the through hole 41, and the plug body 53 is elastically restored to return to the through hole. It expands outside the front end of 41 and becomes a disk shape having a larger diameter than the front end opening 411 of the through-hole 41, so that the front end opening 411 can be closed.

  Thereafter, as shown in FIGS. 6C, 6D, and 9B, a nut 81 is screwed onto the rear male screw 62 of the push rod 60 via a washer 82, and the rear of the spacer 70 is fitted to the washer 82. While abutting the end, the nut 81 is rotated to retract the push rod 60 and the inner member 51 connected to the push rod 60 is pulled into the outer member 52. By pulling in the inner member 51, the plug 53 is brought into close contact with the periphery of the tip opening 411 while the portion corresponding to the tip opening 411 of the through hole 41 of the plug 53 is deformed so as to protrude inside the through hole 41. In addition to closing the through hole 41, the tapered surface of the inner member 51 that gradually increases in diameter enters the outer member 52, and each arc-shaped plate 521 expands outward against the pressing of the coil spring 524, and the outer member 52 expands. Open. Due to the expansion of the outer member 52, the outer peripheral surface of the outer member 52, that is, the outer peripheral surface other than the constituent part of the spiral groove 523 of the arc-shaped plate 521 and the coil spring 524 bite into the wall 14, and the outer member 52 is fixed to the wall 14. .

  The pull-in of the inner member 51 is facilitated by the water pressure P applied to the plug body 53 in addition to the retraction of the push rod 60 due to the rotation of the nut 81, and the inner member 51 is further pulled in by the water pressure P. The force and the expanding force of the outer member 52 are increased, and the fixing strength of the outer member 52 and the stability of the substantially closed state of the through hole 41 due to the expanding of the outer member 52 are enhanced. Further, when the push rod 60 is retracted and the inner member 51 is retracted, the rear end portion of the outer member 52 can be pressed by the cylindrical spacer 70, so that the through hole is larger than the outer diameter of the outer member 52. Even when the hole diameter of 41 is large and there is a gap on the outer periphery of the outer member 52, the outer member 52 can be placed and expanded at a predetermined position near the tip of the through hole 41.

  Further, depending on the water pressure P, the plug body 53 expands outside the front end of the through hole 41 and protrudes to the inside of the front end opening 411. The plug body 53 closes to the periphery of the front end opening 411. The entry of the member 51 into the outer member 52 and the expansion of the outer member 52 occur to some extent before the inner member 51 is retracted due to the rotation of the nut 81, and the inner member due to the subsequent rotation of the nut 81 and the retraction of the push rod 60. These are facilitated and strengthened by 51 pulls.

  Next, as shown in FIGS. 7A and 7B, the nut 81 and the push rod 60 are rotated in the opposite direction to the rotation of the nut 81 when the push rod 60 is retracted, and the inner rod 51 is pushed with the push rod 60. The connection is removed, and the push rod 60 and the spacer 70 are extracted from the through hole 41 and collected. The closing plug 50 from which the push rod 60 has been removed is in a state where the expanded outer member 52 bites into the wall 14 and is fixed.

  Thereafter, as shown in FIGS. 7C to 7E, the filler capsule 22 in which, for example, cement mortar is accommodated as the filler 24 and immersed in the water W1 on the rear side of the plug 50 fixed in the through hole 41. Is inserted into the through hole 41, the filler capsule 22 is broken through at the tip of the shear reinforcement member 23, and the filler 24 is filled into the through hole 41 to be solidified. At this time, the filler capsule 22 is broken by receiving a force so as to be pushed by the shear reinforcement 23, so that the filler 24 is filled on the rear side of the closing plug 50 and the outer wall such as between the arc-shaped plates 521 and 521. The gap between the members 52 passes through the gap between the outer member 52 and the plug body 53 and the gap on the outer periphery of the closing plug 50. By filling and solidifying the filler 24 in which the shear reinforcing material 23 is embedded on the rear side of the closing plug 50 in the through hole 41, the through hole 41 is reliably closed and water is stopped, and a shear reinforcing structure is constructed.

  According to the first embodiment, the front end opening 411 of the through hole 41 is closed with the plug 53 to prevent water leakage into the through hole 41, and the inner member 51 and the outer member 52 that is expanded and filled and solidified. Even if there is water W leaked into the through hole 41 due to the plugging material 53 being blocked, if the water presses the inner member 51, the expansion force of the outer member 52 is increased accordingly. Since the through-hole 41 is further reliably stopped, it is possible to prevent even a slight water leak from flowing to the construction surface side. Therefore, when the long hole 21 for shear reinforcement is accidentally penetrated, it is possible to reliably prevent the fluid of the water W from being ejected from the through hole 41 to the construction surface side. Further, the through hole 41 can be closed in the vicinity of the tip, allowing the through hole 41 to be reused as a long hole for shear reinforcement, improving the work efficiency of the shear reinforcement work and reducing the construction cost. Can be planned. Further, the closing plug 50 can be easily arranged at a required position of the through hole 41 by the push rod 60 detachably connected to the inner member 51. After the placement, the push rod 60 is recovered and easily inserted into the through hole. 41 shear reinforcement works can be performed.

  Further, by using the spacer 70, even when the outer diameter of the outer member 52 is smaller than the hole diameter of the through hole 41, the outer member 52 is prevented from rotating and misaligned, and the inner member 51 can be smoothly drawn in and the outer member 52. Can be expanded at a predetermined position. Further, the outer member 52 formed by bundling a plurality of arc-shaped plates 521 and 521 with a coil spring 524 can expand the outer member 52 more uniformly radially and bite into the wall 14. And the uniformity of obstruction | occlusion of the inner member 51 can be improved. Further, the coil spring 524 can surely prevent unintended expansion when the outer member 52 is handled. In addition, the outer member 52 can more easily bite into the wall 14 by the unevenness of the outer peripheral surface.

Second, through-hole repair method using a closure plug of the Third Embodiment
Next, the second according to the present invention will be described through-hole repair method using a closure plug of the third embodiment.

  The closing plug 50a of the second embodiment includes an inner member 51, a plug 53, and a mounting bolt 54 having the same configuration as the closing plug 50 of the first embodiment, but the configuration of the outer member 52a is different. The outer member 52a is a cylindrical member, and is formed by cutting a plurality of slits 526a extending in the axial direction from the distal end side, so that each blade portion 529a between the slits 526a and 526a expands radially. Yes. Each blade portion 529a is formed with an inclined surface 522a that is inclined so as to expand toward the front at the inner front portion, and the inclined outer surface of the inner member 51 is pressed by each inclined surface 522a. A circumferential groove 525a is formed on the outer peripheral surface of the outer member 52a with a predetermined interval in the axial direction.

  The closing plug 50b according to the third embodiment has an inner member 51 having basically the same configuration as the inner member 51 in the closing plug 50 according to the first embodiment and having a portion with a slightly reduced diameter at the end on the distal end side. Furthermore, although it has the plug body 53 and the attachment bolt 54 which are the same as 1st Embodiment, the structure of the outer member 52b is different.

  The outer member 52b is a cylindrical member, and is formed by cutting a plurality of slits 526b extending in the axial direction from the distal end side, so that each blade portion 529b between the slits 526b and 526b expands radially. Yes. Each blade portion 529b has an inclined surface 522b that is inclined so as to expand forward at the inner front portion, and the inclined outer surface of the inner member 51 is pressed by each inclined surface 522b. The outer peripheral surface of the outer member 52b is basically smooth, but a circumferential groove 527b is formed at a position closer to the tip, and a C-ring 528b is fitted into the circumferential groove 527b.

Second, closure plug 50a of the third embodiment, 50b can also be in place of the closure plug 50 of the first embodiment is applied to the same construction method and transmural hole repair method of the first embodiment.

  According to the second and third embodiments, the outer members 52a and 52b are expanded more widely on the distal end side of the through hole 41 so as to bite into the wall 14, and are closed by the outer members 52a and 52b and the inner member 51. This contributes to the diversity of walls and shear reinforcement work. In addition, the manufacturing cost can be reduced by reducing the number of parts. Moreover, by using a cylindrical member, it is possible to reduce the risk of cutting hands during handling and to increase safety. Further, the configuration corresponding to the first embodiment provides a corresponding effect.

  Further, according to the second embodiment, the outer member 52a can be expanded with less force. Moreover, according to 3rd Embodiment, the unintended expansion at the time of handling of the outer member 52b can be prevented reliably by the C ring 528b.

[Modifications of Embodiment, etc.]
The invention disclosed in this specification is specified by changing these partial configurations to other configurations disclosed in this specification within the applicable range in addition to the configurations of each invention and each embodiment, or It includes those specified by adding other configurations disclosed in this specification to these configurations, or those obtained by deleting these partial configurations to the extent that partial effects can be obtained and specifying them as superordinate concepts. . The following modifications are also included.

  For example, in the above-described embodiment, the fluid stopped by the plug 50 or the like has been described in the case of water. However, the type of fluid is appropriate such as fresh water, seawater, other liquids such as petroleum, or gas. The wall 14 of the structure can be a wall of various structures such as a peripheral wall of a submerged tunnel. Further, the shapes of the inner member 51, the outer member 52, the plug body 53, the push rod 60, and the like, the mutual mounting structure, and the like are appropriate within the scope of the present invention. For example, a sphere formed of water-expandable rubber It is also possible to use a plug body. Further, the number of the arc-shaped plates 521, the blade portions 529a and 529b, etc. is appropriate as long as it is a plurality of two or more.

  In addition, the depth of the slit when the outer member is a cylindrical member such as the outer members 52a and 52b, the inclination angle of the tapered outer peripheral surface of the inner member 51 and the inclined surface 522 of the outer member 52, etc. However, it is appropriate if it can be expanded as required.

  The present invention closes the through-hole when the hole penetrates the wall of the structure that comes into contact with water etc. on one side from the construction surface side and applies shear reinforcement. This can be used to prevent the hole from flowing into the construction surface.

DESCRIPTION OF SYMBOLS 10 ... Water tank 11 ... Main body 12 ... Upper plate 13 ... Flow hole 14 ... Wall 141 ... Construction surface 142 ... Inner side surface 143 ... Original hole bottom 21 ... Long hole 22 ... Filler capsule 23 ... Shear reinforcement 24 ... Filler 31 ... Water storage tray 41 ... Through hole 411 ... Tip opening 50, 50a, 50b ... Blocking plug 51 ... Inner member 511, 512 ... Female screw 52, 52a, 52b ... Outer member 521 ... Arc-shaped plate 522, 522a, 522b ... Inclined surface 523 ... spiral groove 524 ... coil spring 525a, 527b ... circumferential groove 526a, 526b ... slit 528b ... C-ring 529a, 529b ... blade part 53 ... plug body 54 ... mounting bolt 541 ... male screw 60 ... push rod 61 ... front side male screw 62 ... rear Side male screw 70 ... Spacer 81 ... Nut 82 ... Washer W, W1 ... Water P ... Water pressure LW Leakage

Claims (2)

A through-hole repair method for repairing a through-hole formed in the wall of a structure in which a high-pressure fluid pressure is applied to the surface opposite to the construction surface of the shear reinforcement,
An inner member formed in a tapered shape that gradually increases in diameter toward the distal end side of the through hole, and an outer member that is provided so as to press the inner member from the outer periphery and can be radially expanded by drawing in the inner member. And a plug connected to the distal end side of the inner member, and a push rod detachably connected to the rear side of the inner member to the vicinity of the distal end of the through hole. A first step of pushing,
A second step of disposing the closing plug in the vicinity of the tip of the through hole, allowing the plug body to come out of the through hole, and expanding the plug body outside the tip of the through hole;
The push rod is retracted to draw the inner member into the outer member, the plug body projects into the through hole, the plug body closes the end opening of the through hole, and the outer member A third step of expanding the member and biting into the wall;
A fourth step of disconnecting the push rod and collecting the push rod from the through hole;
A fifth step of inserting a filler capsule behind the blocking plug in the through hole;
A sixth step of inserting a shear reinforcement into the through hole to break the filler capsule, filling the through hole with the filler and solidifying;
A through-hole repair method characterized by comprising: In the third step, the outer member is expanded by retracting the push rod while pressing the rear end of the outer member with a cylindrical spacer inserted into the through hole.
In the fourth step, the through-hole repair method according to claim 1, wherein recovering the spacer from the through hole.

Images