CN114810131A - Concrete segment caulking and drainage structure for underground water blocking and draining firstly - Google Patents
Concrete segment caulking and drainage structure for underground water blocking and draining firstly Download PDFInfo
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- CN114810131A CN114810131A CN202210065080.3A CN202210065080A CN114810131A CN 114810131 A CN114810131 A CN 114810131A CN 202210065080 A CN202210065080 A CN 202210065080A CN 114810131 A CN114810131 A CN 114810131A
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 169
- 230000000903 blocking effect Effects 0.000 title claims description 21
- 229920001971 elastomer Polymers 0.000 claims abstract description 78
- 239000005060 rubber Substances 0.000 claims abstract description 78
- 239000003673 groundwater Substances 0.000 claims abstract description 9
- 239000000463 material Substances 0.000 claims abstract description 6
- 230000000694 effects Effects 0.000 claims description 5
- 239000000178 monomer Substances 0.000 claims description 4
- 239000011345 viscous material Substances 0.000 claims description 3
- 230000015556 catabolic process Effects 0.000 claims description 2
- 230000008595 infiltration Effects 0.000 claims 1
- 238000001764 infiltration Methods 0.000 claims 1
- 238000010276 construction Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 5
- 238000007789 sealing Methods 0.000 description 5
- 239000000853 adhesive Substances 0.000 description 4
- 230000001070 adhesive effect Effects 0.000 description 4
- 238000007599 discharging Methods 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 238000004140 cleaning Methods 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000007493 shaping process Methods 0.000 description 3
- 125000000484 butyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 2
- 230000007123 defense Effects 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000004513 sizing Methods 0.000 description 2
- 229920002943 EPDM rubber Polymers 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 239000007767 bonding agent Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 150000001875 compounds Chemical group 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000003566 sealing material Substances 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 229920003051 synthetic elastomer Polymers 0.000 description 1
- 239000005061 synthetic rubber Substances 0.000 description 1
- 230000007306 turnover Effects 0.000 description 1
- 238000004078 waterproofing Methods 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/04—Lining with building materials
- E21D11/08—Lining with building materials with preformed concrete slabs
- E21D11/083—Methods or devices for joining adjacent concrete segments
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/38—Waterproofing; Heat insulating; Soundproofing; Electric insulating
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- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Mining & Mineral Resources (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Lining And Supports For Tunnels (AREA)
Abstract
The utility model provides a concrete segment caulking and drainage structures that is used for groundwater to block up earlier back row for the gap shutoff between shield tunnel section of jurisdiction concrete piece, including outer rubber of block structure, inner rubber of block structure, hold water cavity, tolerance binding face, drain pipe, level pressure outlet valve, water pipe head, water guide pipeline, the fixed knot of water guide pipeline. The caulking plugging structure adopts the rubber concatenation of the different materials of inside and outside bilayer to set up in the middle of the structure and hold the water cavity, regard "stifled back row" earlier as waterproof theory, utilize inside and outside bilayer rubber to carry out the shutoff earlier, when inside and outside bilayer rubber is punctured by water pressure after, groundwater gets into and holds the water cavity, punctures rivers water pressure and discharges rivers along the pipe through level pressure outlet valve control, guarantees that shield tunnel vault and hunch end key position do not have the percolating water condition and produce.
Description
Technical Field
The invention relates to the technical field of shield tunnel waterproofing, in particular to a concrete segment caulking and drainage structure for draining underground water after blocking.
Background
In recent years, with the rapid development of main cities in China, urban rail transit construction enters a new development stage, wherein a large number of engineering problems appear in the construction process of subways and need to be solved urgently, particularly the problem of water prevention of shield tunnels, and challenges are created for long-term safe operation of subways.
The shield tunnel water-proof mainly comprises a segment self-water-proof part, a seam water-proof part and a hand hole water-proof part. It is generally considered that waterproof of the joint is the weakest link in waterproof of the whole shield tunnel. In the joint waterproof project, the first defense line is used for sealing gasket waterproof, and the second defense line is used for caulking and plugging. When the external water pressure is too high to puncture the sealing pad, caulking and plugging become the waterproof importance of the shield tunnel.
At present, the existing caulking plugging is mainly divided into an amorphous plugging and a shaped plugging. The unshaped sealing is to smear an unshaped sealing material on the surface of concrete after the caulking of the shield tunnel is cleaned so as to seal the gap and prevent water.
And secondly, forming plugging, namely a method for plugging caulking by using a rubber material prefabricated part, wherein a prefabricated sealing part with two toothed wings is generally adopted, and a hollow structure is also adopted in some cases, and the sealing part is hit by a positioning sheet with higher hardness after the toothed prefabricated part is plugged into the caulking to complete positioning. The existing shaping plugging structure only adopts a plugging form for underground water, once the structure is broken down or falls off under the action of water pressure, the shaping plugging structure at the damaged position completely loses the function of plugging, leakage water easily causes the problems of shield power grid short circuit and the like, and the secondary repair cost is higher. In addition, the existing shaping plugging structure has the defects of small bearable water pressure, high requirements on segment assembling precision and the like. Therefore, a novel caulking plugging structure is needed for preventing water at the caulking position of the shield tunnel.
Disclosure of Invention
The invention aims to provide a concrete segment caulking and drainage structure for draining underground water after being blocked. The caulking plugging structure adopts the splicing of rubber of different materials of inner and outer bilayers, and sets up a water containing cavity in the middle of the structure, and uses the concept of 'blocking before discharging' as waterproof, and utilizes the inner and outer bilayers to block water firstly, when the inner and outer bilayers are punctured by water pressure, groundwater enters the water containing cavity, and the water pressure of the punctured water flow is controlled by a constant pressure water outlet valve and the water flow is discharged along a guide pipe, thereby ensuring that no water leakage condition is generated at the key positions of the vault and the arch bottom of the shield tunnel.
Technical scheme
A caulking and drainage structure of a concrete segment for draining underground water after plugging is characterized by comprising an outer rubber layer 2 of a plugging structure, an inner rubber layer 3 of the plugging structure, a water containing cavity 4, a tolerance binding surface 5, a drain hole 8, a constant pressure water outlet valve 9, a water pipe joint 10, a water guide pipeline 11 and a water guide pipeline fixing buckle 12; the structure is used for plugging and draining gaps between shield tunnel segment concrete blocks 1; the lower parts of the shield tunnel segment concrete blocks 1 are provided with caulking grooves, the caulking grooves between the adjacent shield tunnel segment concrete blocks 1 form a symmetrical structure, the caulking prefabricated structure comprises two symmetrical prefabricated structure monomers, and the prefabricated structure monomers are arranged in a single caulking groove;
in a single caulking groove, the outer rubber 2 of the plugging structure is arranged on the inner wall of the caulking groove, and the middle part and the lower part of the caulking groove are provided with hollow structures; the inner rubber 3 of the plugging structure is semi-cylindrical, is made of a water-swellable material, is arranged in the middle of the outer rubber 2 of the plugging structure, and is in bonding contact with the inner wall of the outer rubber 2 of the plugging structure; the surface of the tolerance binding surface 5 is made of viscous materials, is arranged at the lower part of the inner layer rubber 3 of the plugging structure and is in bonding contact with the inner wall of the outer layer rubber 2 of the plugging structure; along the length direction of the tunnel segment concrete block 1, drain holes 8 are formed in the middle positions of the lower portions of the outer-layer rubber 2 of the blocking structure, the inner-layer rubber 3 of the blocking structure and the tolerance binding face 5, so that the semi-cylindrical cavity in the inner-layer rubber 3 of the blocking structure is communicated with the drain holes 8.
After the concrete blocks 1 of the adjacent shield tunnel segment are spliced, the inner rubber 3 of the two semi-cylindrical plugging structures forms a cylindrical cavity structure, namely a water containing cavity 4; the tolerance binding surfaces 5 of the adjacent prefabricated structural units are in bonding contact, so that water leakage of the water containing cavity 4 caused by assembly errors is prevented, and a protection effect is achieved;
the drain hole 8 is connected with a water guide pipeline 11 through a constant pressure water outlet valve 9 and a water pipe joint 10 in sequence, the water guide pipeline 11 is fixed on the tunnel segment concrete block 1 through a water guide pipeline fixing buckle 12, and water discharged by the water guide pipeline 11 is collected in a centralized manner and then discharged out of the shield tunnel.
After the ground water pressure punctures the outer rubber 2 of the plugging structure and the inner rubber 3 of the plugging structure in sequence, water enters the water containing cavity 4; then, the inner rubber 3 of the plugging structure expands and deforms when meeting water, and a gap formed by the inner rubber 3 of the plugging structure is filled by water pressure breakdown; furthermore, after the inner rubber 3 of the plugging structure is punctured by water pressure for multiple times, the volume of water in the water containing cavity 4 is increased, and when the water pressure in the water containing cavity 4 reaches the preset pressure of the constant-pressure water outlet valve 9, the water in the water containing cavity 4 is discharged through the water guide pipeline 11, so that a water plugging and discharging cycle is completed.
The combined structure of the outer layer rubber 2 of the plugging structure and the inner layer rubber 3 of the plugging structure is a first layer of plugging; after the plugging structure is punctured by underground water, further plugging a gap punctured by the water pressure by utilizing the expansion deformation of the inner layer rubber 3 of the plugging structure to form a second layer of plug; furthermore, after the current two-layer plugging structure is damaged and the water pressure in the water containing cavity 4 reaches the preset pressure of the constant-pressure water outlet valve 9, the water is drained out of the shield system after being dredged by the water guiding pipeline 11 to form a drainage system with a caulking structure, so that the seepage damage of underground water to the existing building is prevented.
The hollow structure of 2 lower parts of the outer rubber of block structure forms the headspace after the 1 concatenation of adjacent shield tunnel section of jurisdiction concrete piece, when 1 installation deviation of adjacent shield tunnel section of jurisdiction concrete piece for shield tunnel section of jurisdiction concrete piece 1 guarantees not to produce the corner because of caulking both sides extrusion each other and destroys when receiving the stress that the moment of flexure arouses.
Compared with the prior art, the invention has the following beneficial effects:
1) the caulking structure is characterized in that the blocking structure is pre-pasted on the surface of the caulking, the attaching of the unilateral structures on two sides is completed in the segment splicing process, the procedures of cleaning the caulking and filling the caulking blocking structure after the assembly of the shield tunnel segments are omitted, and the construction efficiency is improved.
2) This caulking block structure is owing to paste in advance before assembling, so can play certain guard action to near the concrete of caulking, prevents to destroy the condition of exposing the reinforcing bar even owing to appearing assembling error and near the concrete of caulking that leads to, leaves the headspace in the structure lower part simultaneously, has guaranteed that the concrete can not lead to the concrete to destroy because of the collision extrusion of the unilateral structure in both sides.
3) In the caulking plugging structure, a tolerance binding surface is reserved under the water containing cavity, so that the tolerance of the sizing caulking plugging structure to the problem of the assembling work precision of the pipe sheets is improved, and the water plugging structure is prevented from losing efficacy due to the assembling problem.
4) The caulking work process adopts the concept of collecting firstly and then discharging, realizes the control and discharge of groundwater seepage through the expansion characteristic of the inner rubber of the plugging structure and the matching of the drainage device, and solves the problem that the prior sizing caulking breaks down or falls off under the action of water pressure and then leads the water loss, and the potential safety hazard generated by seepage water.
Drawings
FIG. 1 is a schematic view of installation of a longitudinal section caulking plugging structure of a shield tunnel;
FIG. 2 is a schematic view of FIG. 1 at caulk closure structure B;
FIG. 3 is a schematic diagram of a single shield tunnel segment concrete block structure
FIG. 4 is a schematic diagram of splicing adjacent shield tunnel segment concrete blocks
Figure 5 two adjacent shield tunnel segment concrete blocks with caulking plugging prefabricated structures
FIG. 6 is a schematic structural view of the cross section (section a-a) of FIG. 2;
FIG. 7 is a schematic bottom view of the caulking compound structure (normal position);
FIG. 8 is a schematic view of the caulking plugging structure at a bottom view angle (water outlet position);
FIG. 9 is a schematic view of the arrangement of the drainage pipes with caulking structures at 86 degrees of the arch bottom;
FIG. 10 is a schematic view of the arrangement of the caulking-structure water drainage pipe at 43 degrees of the arch;
FIG. 11 is a schematic view of a micro-connection structure of a caulking plugging structure and a concrete binding surface.
Description of reference numerals:
1-shield tunnel segment concrete block; 111-left shield tunnel segment concrete block; 112-right shield tunnel segment concrete block; 113-left caulking groove; 114-right caulking groove; 2, plugging the outer rubber of the structure; 3, plugging the inner rubber layer of the structure; 4-water containing cavity; 5, allowance binding surface; 6-a binder; 7, sanding; 8-a drain hole 8; 9-constant pressure water outlet valve; 10-water pipe joint; 11-a water conduit; 12-fixing and buckling the water guide pipeline; 13-supply contact network; 14-a track; 15-ballast bed.
Detailed Description
The invention is further described below with reference to the following figures and examples: the invention aims to provide a concrete segment caulking and drainage structure for draining underground water after being blocked. For better explaining the content of the invention, a left shield tunnel segment concrete block 111, a right shield tunnel segment concrete block 112, a left caulking groove 113, a right caulking groove 114, a film a, an adhesive 6, a frosting layer 7, a power supply contact net 13, a track 14 and a track bed 15 are introduced.
The shield tunnel caulking is waterproof is that subway construction and operation are waterproof an important ring, and the section of jurisdiction caulking need be to tunnel deformation such as tunnel business turn over entrance to a cave mouth, connecting channel, section of jurisdiction seam open change great position hoisting point take precautions against, but in other positions, the caulking mainly plays the effect of diversion drainage, and this structure can be applied to the waterproof general district of shield tunnel. The caulking structure in the section generally plays a role in preventing the arch crown from leaking water and damaging the power supply contact net 13, and generally plays a role in preventing the condition that the water seeps from the track 14 and the foundation bed 15 due to the water seepage of the soil body under the tunnel from occurring at the arch bottom. As shown in fig. 1, the present caulking structure shows a specific embodiment in the range of 43 ° of the dome and 86 ° of the dome.
As shown in fig. 2, a concrete segment caulking and drainage structure for groundwater drainage after plugging comprises a plugging structure outer layer rubber 2, a plugging structure inner layer rubber 3, a water containing cavity 4, a tolerance binding surface 5, a drainage hole 8, a constant pressure water outlet valve 9, a water pipe joint 10, a water guide pipeline 11 and a water guide pipeline fixing buckle 12; as shown in fig. 3, the tunnel segment concrete block 1 includes a left caulking groove 113 and a right caulking groove 114; as shown in fig. 4, adjacent tunnel segment concrete blocks 1 are spliced, for example, a left shield tunnel segment concrete block 111 and a right shield tunnel segment concrete block 112 are spliced; the right caulking groove 114 of the lower portion of the left shield tunnel segment concrete block 111 is butted with the left caulking groove 113 of the right shield tunnel segment concrete block 112, and the caulking prefabricated structure of the present invention is installed in the left caulking groove 113 and the right caulking groove 114.
As shown in fig. 5, specifically, in a single caulking groove, the outer rubber 2 of the plugging structure is mounted on the inner wall of the caulking groove through a film a, and hollow structures are arranged in the middle and the lower part of the caulking groove; the inner rubber 3 of the plugging structure is semi-cylindrical and is made of a water-swellable material, is arranged in the middle of the outer rubber 2 of the plugging structure, and is in bonding contact with the inner wall of the outer rubber 2 of the plugging structure; the surface of the tolerance binding surface 5 is made of viscous materials, is arranged at the lower part of the inner layer rubber 3 of the plugging structure and is in bonding contact with the inner wall of the outer layer rubber 2 of the plugging structure; along the length direction of the tunnel segment concrete block 1, drain holes 8 are formed in the middle positions of the lower portions of the outer-layer rubber 2 of the blocking structure, the inner-layer rubber 3 of the blocking structure and the tolerance binding face 5, so that the semi-cylindrical cavity in the inner-layer rubber 3 of the blocking structure is communicated with the drain holes 8.
As shown in fig. 7 and 8, the drain hole 8 is connected with a water conduit 11 sequentially through a constant pressure water outlet valve 9 and a water pipe joint 10, the water conduit 11 is fixed on the concrete block 1 of the tunnel segment through a water conduit fixing buckle 12, and water discharged from the water conduit 11 is collected and discharged out of the shield tunnel;
the outer rubber 2 of the plugging structure is made of ethylene propylene diene monomer synthetic rubber;
the inner layer rubber 3 of the plugging structure is made of water-swellable rubber.
The length of the tolerance abutting surface 5 is set to be 2 mm.
The hollow-out construction of 2 lower parts of outer rubber of block structure forms the headspace after adjacent shield tunnel section of jurisdiction concrete blocks 1 splice, when 1 installation deviation of adjacent shield tunnel section of jurisdiction concrete blocks for both sides shield tunnel section of jurisdiction concrete blocks 1 can not lead to the corner to destroy because of caulking department contact stress is too big.
As shown in fig. 11, the adhesive 6 is a resin-impregnated butyl water-based adhesive; the outer rubber 2 of the blocking structure and the concrete block 1 of the shield tunnel segment are bonded, a frosting layer 7 is added, and the contact area and the bonding effect of the bonding agent are improved.
After the design is finished, prefabricating a double-layer plugging structure in a factory, namely prefabricating outer-layer rubber 2 and inner-layer rubber of the plugging structure, after the shield tunnel segment concrete block 1 is conveyed to a position near a construction site together, firstly cleaning dust on the surface of a caulking joint of a shield tunnel, smearing a butyl water system adhesive 6 doped with resin on the concrete surface after the cleaning is finished, and finally adhering a shaped caulking frosted surface 7 on the caulking joint. And then sequentially installing the outer rubber 2 of the blocking structure, the inner rubber 3 of the semi-cylindrical blocking structure, the tolerance binding surface 5 and a reserved drain hole 8. As shown in fig. 6, next, after the concrete blocks 1 of the adjacent shield tunnel segments are spliced, the inner layer rubber 3 of the two semi-cylindrical plugging structures forms a cylindrical cavity structure, namely a water-containing cavity 4; and the tolerance binding surfaces 5 of the adjacent prefabricated structural units are in bonding contact, so that water leakage of the water containing cavity 4 caused by assembly errors is avoided, and a protection effect is achieved. And in the shield site, a drain hole 8, a constant pressure water outlet valve 9, a water pipe connector 10, a water guide pipeline 11 and a water guide pipeline fixing buckle 12 are installed to form a drainage structure.
After stratum water pressure punctures the outer rubber 2 and the inner rubber 3 of the plugging structure in sequence, water enters the water containing cavity 4, and the inner rubber 3 of the plugging structure expands and deforms when meeting water, so that a gap formed by the water pressure puncturing the inner rubber 3 of the plugging structure is filled; furthermore, after the inner rubber 3 of the plugging structure is punctured by water pressure for multiple times, the volume of water in the water containing cavity 4 is increased, and when the water pressure in the water containing cavity 4 reaches the preset pressure of the constant-pressure water outlet valve 9, the water in the water containing cavity 4 is discharged through the water guide pipeline 11, so that a water plugging and discharging cycle is completed.
As shown in fig. 9 and 10, the arrangement of the water pipe connector 10 is slightly different between the range of 43 degrees of the dome and the range of 86 degrees of the dome, because the water pipe can be arranged through the upper space of the power supply contact net in the range of the dome 43, but the water pipe cannot be arranged through the foundation in the range of 86 degrees of the dome (the arrangement can damage the structure of the foundation to be easily damaged). Therefore, the water pipe connector 10 is communicated in two directions within the range of the arch top 43, but only in one direction within the range of 86 degrees of the arch bottom, and the water pipe connector 10 is the tail end position of the water pipe and does not extend to the other side.
A plurality of water pipe connectors 10 are connected in series through a water guide pipeline 11 fixed on the inner wall of a shield tunnel segment through a water guide pipeline fixing buckle 12, and each water pipe connector 10 is connected into the water containing cavity 4 through a water drain hole 8, so that the communication of the whole space is realized.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. It will be readily apparent to those skilled in the art that various modifications to these embodiments may be made, and the generic principles described herein may be applied to other embodiments without the use of the inventive faculty. Therefore, the present invention is not limited to the embodiments described herein, and those skilled in the art should make improvements and modifications within the scope of the present invention based on the disclosure of the present invention.
Claims (4)
1. A concrete segment caulking and drainage structure for underground water blocking and draining firstly is characterized by comprising outer rubber (2) of a blocking structure, inner rubber (3) of the blocking structure, a water containing cavity (4), a tolerance binding surface (5), a drain hole (8), a constant pressure water outlet valve (9), a water pipe joint (10), a water guide pipeline (11) and a water guide pipeline fixing buckle (12); the structure is used for plugging and draining gaps between shield tunnel segment concrete blocks (1); the lower parts of the shield tunnel segment concrete blocks (1) are provided with caulking grooves, the caulking grooves between the adjacent shield tunnel segment concrete blocks (1) form a symmetrical structure, the caulking prefabricated structure comprises two symmetrical prefabricated structure monomers, and the prefabricated structure monomers are arranged in a single caulking groove;
in a single caulking groove, outer rubber (2) of the plugging structure is arranged on the inner wall of the caulking groove, and hollow structures are arranged at the middle part and the lower part of the caulking groove; the inner rubber (3) of the plugging structure is semi-cylindrical, adopts a water-swellable material, is arranged in the middle of the outer rubber (2) of the plugging structure, and is in bonding contact with the inner wall of the outer rubber (2) of the plugging structure; the surface of the tolerance binding surface (5) is made of viscous materials, is arranged at the lower part of the inner layer rubber (3) of the plugging structure and is in bonding contact with the inner wall of the outer layer rubber (2) of the plugging structure; along the length direction of the tunnel segment concrete block 1, drain holes (8) are formed in the middle positions of the lower portions of the plugging structure outer layer rubber (2), the plugging structure inner layer rubber (3) and the tolerance binding surface (5), so that a semi-cylindrical cavity in the plugging structure inner layer rubber (3) is communicated with the drain holes (8);
after the concrete blocks (1) of the adjacent shield tunnel segments are spliced, the inner rubber (3) of the two semi-cylindrical plugging structures forms a cylindrical cavity structure, namely a water containing cavity (4); the tolerance binding surfaces (5) of the adjacent prefabricated structural units are in bonding contact, so that water leakage of the water containing cavity (4) caused by assembly errors is prevented, and a protection effect is achieved;
wash port (8) loop through level pressure outlet valve (9), water pipe head (10) and are connected with water guide pipe (11), and water guide pipe (11) are fixed on tunnel segment concrete piece (1) through water guide pipe is fixed detaining (12), and water that water guide pipe (11) discharged is concentrated and is collected the back and discharge the shield tunnel.
2. The concrete segment caulking and drainage structure for groundwater drainage of claim 1, wherein the structure comprises: after stratum water pressure breaks through the outer rubber (2) of the blocking structure and the inner rubber (3) of the blocking structure in sequence, water enters the water containing cavity (4); then, the inner rubber (3) of the plugging structure expands and deforms when meeting water, and a gap formed by the inner rubber (3) of the plugging structure is filled by water pressure breakdown; furthermore, after the inner rubber (3) of the plugging structure is punctured by water pressure for multiple times, the volume of water in the water containing cavity (4) is increased, and when the water pressure in the water containing cavity (4) reaches the preset pressure of the constant-pressure water outlet valve (9), the water in the water containing cavity (4) is discharged through the water guide pipeline (11), so that a water plugging and draining cycle is completed.
3. The concrete segment caulking and drainage structure for groundwater drainage of claim 1, wherein the structure comprises: the combined structure of the outer layer rubber (2) of the plugging structure and the inner layer rubber (3) of the plugging structure is a first layer of plugging; after the plugging structure is punctured by underground water, further plugging a gap punctured by water pressure by utilizing the expansion deformation of inner layer rubber (3) of the plugging structure to form a second layer of plug; furthermore, after the current two-layer plugging structure is damaged and the water pressure in the water containing cavity (4) reaches the preset pressure of the constant-pressure water outlet valve (9), the shield system is discharged after dredging through the water guide pipeline (11), so that a drainage system of a caulking structure is formed, and the infiltration damage of underground water to the existing building is prevented.
4. The concrete segment caulking and drainage structure for groundwater drainage of claim 1, wherein the structure comprises: the hollow structure of the lower part of the outer rubber (2) of the blocking structure forms a reserved space after splicing of the adjacent shield tunnel segment concrete blocks (1), and when the adjacent shield tunnel segment concrete blocks (1) are installed and deviated, the shield tunnel segment concrete blocks (1) on the two sides cannot be damaged at corners due to overlarge contact stress of caulking positions.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210065080.3A CN114810131A (en) | 2022-01-20 | 2022-01-20 | Concrete segment caulking and drainage structure for underground water blocking and draining firstly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210065080.3A CN114810131A (en) | 2022-01-20 | 2022-01-20 | Concrete segment caulking and drainage structure for underground water blocking and draining firstly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114810131A true CN114810131A (en) | 2022-07-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210065080.3A Pending CN114810131A (en) | 2022-01-20 | 2022-01-20 | Concrete segment caulking and drainage structure for underground water blocking and draining firstly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114810131A (en) |
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2022
- 2022-01-20 CN CN202210065080.3A patent/CN114810131A/en active Pending
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