CN114837704A - Sealing assembly suitable for plugging segment grouting hole and construction method thereof - Google Patents
Sealing assembly suitable for plugging segment grouting hole and construction method thereof Download PDFInfo
- Publication number
- CN114837704A CN114837704A CN202210662469.6A CN202210662469A CN114837704A CN 114837704 A CN114837704 A CN 114837704A CN 202210662469 A CN202210662469 A CN 202210662469A CN 114837704 A CN114837704 A CN 114837704A
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- Prior art keywords
- sealing
- grouting
- segment
- deformable
- plugging
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000007789 sealing Methods 0.000 title claims abstract description 88
- 238000010276 construction Methods 0.000 title claims description 9
- 239000004593 Epoxy Substances 0.000 claims abstract description 8
- 239000003292 glue Substances 0.000 claims abstract description 8
- 229920006335 epoxy glue Polymers 0.000 claims description 21
- 230000003014 reinforcing effect Effects 0.000 claims description 17
- 229910000831 Steel Inorganic materials 0.000 claims description 9
- 239000010959 steel Substances 0.000 claims description 9
- 238000007569 slipcasting Methods 0.000 claims description 6
- 238000004140 cleaning Methods 0.000 claims description 5
- 239000000758 substrate Substances 0.000 claims description 4
- 230000008602 contraction Effects 0.000 claims description 3
- 230000009977 dual effect Effects 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 8
- 239000004568 cement Substances 0.000 description 4
- 238000003466 welding Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- 238000005452 bending Methods 0.000 description 2
- 239000011440 grout Substances 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- 239000000956 alloy Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011083 cement mortar Substances 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000004570 mortar (masonry) Substances 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
Images
Classifications
-
- 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
-
- 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
-
- 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
- E21D11/10—Lining with building materials with concrete cast in situ; Shuttering also lost shutterings, e.g. made of blocks, of metal plates or other equipment adapted therefor
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
- E21D9/06—Making by using a driving shield, i.e. advanced by pushing means bearing against the already placed lining
- E21D9/0607—Making by using a driving shield, i.e. advanced by pushing means bearing against the already placed lining the shield being provided with devices for lining the tunnel, e.g. shuttering
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Structural Engineering (AREA)
- Architecture (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Civil Engineering (AREA)
- Environmental & Geological Engineering (AREA)
- Lining And Supports For Tunnels (AREA)
Abstract
The invention discloses a sealing assembly suitable for plugging a segment grouting hole, which comprises a hoisting embedded part, a fastening member and a deformable sealing member, wherein the hoisting embedded part is positioned in a segment, the fastening member is connected with the hoisting embedded part, the deformable sealing member is positioned in the grouting hole of the segment and is in sealing fit with the fastening member, and an expansion waterproof layer is respectively injected into the bottom of the deformable sealing member and a gap between the deformable sealing member and the segment to form a double waterproof system; according to the invention, the waterproof effect is improved through a plurality of waterproof systems, the first waterproof system is formed by the expanded rubber, and the second waterproof system is formed by the sealing member and the epoxy AB glue, so that the plugging waterproof performance is effectively improved; secondly, form the joint through the interlock of deformable sealing member and holding member and bear the weight of the system, improve holistic structural strength, the effectual tensile stress that produces of undertaking section of jurisdiction inflexion and inflection improves the section of jurisdiction reliability.
Description
Technical Field
The invention relates to the technical field of shield tunnel construction, in particular to a sealing assembly suitable for plugging a segment grouting hole and a construction method thereof.
Background
The shield segment is a concrete member prefabricated in a factory, the strength of the whole structure can reach C60, the impermeability grade is P10-P12, the whole thickness of the shield segment is generally 300-650mm, and the depth of a corresponding grouting hole is 300-650 mm. After the secondary grouting is finished, mortar or cement mortar in the grouting hole can shrink and bleed to form a cement rod body with the diameter smaller than the aperture of the grouting hole, the compressive strength of the cement rod body is generally about C20 and far lower than the strength of the shield segment, and the anti-seepage grade is avoided.
Because the diameter of the cement rod body is smaller than that of the grouting hole, a water seepage channel is easy to form, and water seepage of the duct piece is caused; and the compressive strength of the cement rod body is weaker than that of the shield segment, the material is not compact and cannot bear higher water pressure, and the grouting holes become weak points of the shield tunnel under the condition of high water pressure. When the cavity in the shield pipe is not tightly filled or forms a communication channel with a water body, the high water pressure can break down the grouting hole to cause water leakage, so that the accident that the grouting hole bursts mud and gushes water is caused, and huge potential safety hazards are caused for the safe operation of the shield tunnel.
Disclosure of Invention
The invention aims to provide a sealing assembly suitable for plugging a segment grouting hole and a construction method thereof, and aims to solve the problem of poor plugging effect of the existing segment grouting hole.
The technical scheme for solving the technical problems is as follows: the utility model provides a seal assembly suitable for section of jurisdiction slip casting hole leaking stoppage, is including the hoist and mount built-in fitting that is located the section of jurisdiction, with the tight fixed component that hoist and mount built-in fitting is connected and be located the slip casting of section of jurisdiction downthehole and with the tight deformable sealing member of fixed component seal fit, but pour into respectively in the bottom of deformable sealing member, the clearance between deformable sealing member and the section of jurisdiction into has the inflation waterproof layer, forms dual waterproof system.
Further, the fastening component comprises a connecting rod arranged inside the duct piece and a clamping frame arranged at the end part of the connecting rod, and a clamping block in an arrow-shaped structure is arranged in the clamping frame.
Further, the deformable sealing component comprises a sealing base body matched in a grouting hole of the duct piece, a deformable buckling piece arranged on the sealing base body and located on the same horizontal plane, and a grouting pipeline arranged on the sealing base body, wherein the grouting pipeline is communicated with the grouting hole, and the deformable buckling piece is matched with the clamping block in a buckling mode.
Furthermore, the deformable buckling piece comprises reinforcing rods arranged on the sealing base body and distributed in a cross shape, buckling cavities arranged at the end parts of the reinforcing rods and memory springs arranged between the adjacent reinforcing rods, the reinforcing rods are pushed to move through the extension and contraction of the memory springs, and the clamping blocks extend into the buckling cavities and are matched with the buckling cavities in a buckling mode to form a combined bearing system.
Furthermore, the grouting pipelines are distributed in a cross shape.
Furthermore, the expansion waterproof layer is arranged on the top of the sealing substrate, and the expansion waterproof layer is injected with epoxy AB glue and then expands to form a first waterproof system.
Furthermore, the expansion waterproof layer is filled in the gap between the deformable sealing component and the pipe piece and wraps the occlusion part of the clamping block and the buckling cavity to form a second waterproof system.
Furthermore, the sealing matrix adopts C60 concrete, and the connecting rod and the reinforcing rod both adopt steel bars.
Further, the deformable sealing member has an upper circumferential diameter greater than a diameter of the grout hole.
The invention also provides a construction method for grouting and plugging a duct piece by adopting the sealing assembly, which is characterized by comprising the following steps of:
s1: cleaning the grouting holes to ensure that no residual muck exists in the grouting holes;
s2: then assembling the deformable sealing member into the segment grouting hole, and ensuring that the position of the deformable sealing member corresponds to that of the fastening member;
s3: the deformable sealing member is sequentially injected with epoxy glue A and epoxy glue B through a grouting pipeline, and the epoxy glue A and the epoxy glue B react to generate heat, so that the memory spring extends to push the deformable sealing member and the fastening member to be mutually occluded to form a fixed structure.
S4: and continuously injecting epoxy glue A and epoxy glue B, so that the epoxy glue AB fills the hole between the deformable sealing member and the duct piece, wraps the occlusion part of the fastening member, and expands the expansion rubber to form a multi-channel waterproof system.
The invention has the following beneficial effects: the sealing assembly suitable for plugging the segment grouting hole and the construction method thereof have the advantages that the structure is reliable, the service performance is good, the waterproof effect is improved through a plurality of waterproof systems, the first waterproof system is formed by the expanded rubber, the second waterproof system is formed by the sealing component and the epoxy AB glue, and the plugging waterproof performance is effectively improved; secondly, form the joint through the interlock of deformable sealing member and holding member and bear the weight of the system, improve holistic structural strength, the effectual tensile stress that produces of undertaking section of jurisdiction inflexion and inflection improves the section of jurisdiction reliability.
Drawings
FIG. 1 is a schematic view of the structure of a duct piece and a fastening member according to the present invention;
FIG. 2 is a schematic view of a deformable sealing member according to the present invention;
FIG. 3 is a schematic view of the deformable sealing member and the fastening member of the present invention;
FIG. 4 is a schematic view of the structure of FIG. 2 along the line A-A;
FIG. 5 is a schematic view of the structure of FIG. 2 along the direction B-B;
FIG. 6 is a schematic view of the assembly structure of the deformable sealing member and the duct piece of the present invention.
Detailed Description
The principles and features of this invention are described below in conjunction with the following drawings, which are set forth by way of illustration only and are not intended to limit the scope of the invention.
As shown in fig. 1, a sealing assembly suitable for plugging a segment grouting hole comprises a hoisting embedded part 1 located in a segment 10, a fastening member 2 connected with the hoisting embedded part 1, and a deformable sealing member 3 which is located in the grouting hole of the segment 10 and is in sealing fit with the fastening member 2, wherein an expansion waterproof layer 4 is respectively injected into the bottom of the deformable sealing member 3 and the gap between the deformable sealing member 3 and the segment 10, so that a dual waterproof system is formed. The expansion waterproof layer 4 is arranged on the top of the sealing base body 30, and is expanded to form a first waterproof system after epoxy AB glue is injected. The expansion waterproof layer 4 is filled in the gap between the deformable sealing member 3 and the duct piece 10 and wraps the occlusion part of the fixture block 22 and the buckling cavity 311 to form a second waterproof system, so that the plugging waterproof performance is effectively improved. Secondly, form the joint through the interlock of deformable sealing member 3 and holding member 2 and bear the weight of the system, improve holistic structural strength, the effectual tensile stress that produces of undertaking section of jurisdiction 10 inflexion and outer bend improves the section of jurisdiction 10 reliability.
The fastening member 2 is made of steel and is provided with two layers, the fastening member 2 comprises a connecting rod 20 arranged inside the duct piece 10 and a clamping frame 21 arranged at the end part of the connecting rod 20, and a clamping block 22 in an arrow-shaped structure is arranged in the clamping frame 21. The tie rods 20 are steel bars and are embedded in the tube sheet 10. The clamping frame 21 is connected by adopting a welding line, and the strength of the welding line is not lower than that of the steel bar.
As shown in fig. 2 to 5, the deformable sealing member 3 includes a sealing base 30 fitted in the grouting hole of the duct piece 10, a deformable fastening member 31 disposed on the sealing base 30 and located on the same horizontal plane, and a grouting pipe 32 disposed on the sealing base 30, wherein the grouting pipe 32 is communicated with the grouting hole, and the deformable fastening member is in snap fit with the fixture block 22. Slip casting pipeline 32 is the cross and distributes, and it is pre-buried in sealing substrate 30, adopts the PVC material to make, and the slip casting material is epoxy AB glue, and the ratio is 1: 1. epoxy AB glue is injected into the sealing base body 30 and the pipe piece 10 through the grouting pipeline 32, and a gap between the sealing base body and the pipe piece and a gap between the deformable sealing member 3 and the fastening member 2 at the occlusion part are filled. The sealing matrix 30 is made of C60 concrete, and the connecting rods 20 and the reinforcing rods 310 are made of steel bars. The upper circumferential diameter of the deformable sealing member 3 is larger than the diameter of the grout hole.
The deformable buckling member 31 includes reinforcing rods 310 disposed on the sealing substrate 30 and distributed in a cross shape, buckling cavities 311 disposed at the end portions of the reinforcing rods 310, and memory springs 312 disposed between adjacent reinforcing rods 310, wherein the reinforcing rods 310 are pushed to move by the expansion and contraction of the memory springs 312, and the fixture block 22 extends into the buckling cavities 311 and is in snap fit with the buckling cavities 311 to form a combined bearing system. The reinforcing rod 310 is made of steel bars, the steel bars are connected with the buckling cavities 311 through welding seams, the strength of the welding seams is not lower than that of the steel bars, and the memory springs 312 are made of alloy materials. When the epoxy AB glue reacts with each other to generate heat, the memory spring 312 is urged to return to a straight shape, and the generated expansion force pushes the reinforcing rod 310 and the fastening member 2 outward. The deformable sealing member 3 and the fastening member 2 are mutually meshed to form a fixed structure, so that large tensile stress can be borne, the overall structural strength is improved, the tensile stress generated by the inward bending and the outward bending of the duct piece 10 is effectively borne, and the reliability of the duct piece 10 is improved.
The invention also provides a construction method for grouting and plugging the duct piece 10 by adopting the sealing assembly, which is characterized by comprising the following steps of:
s1: cleaning the grouting holes, and cleaning the muck in the grouting holes of the pipe sheets 10 by using slag cleaning equipment, so as to prevent the deformable sealing member 3 from being plugged into the grouting holes and ensure that no residual muck exists in the grouting holes;
s2: then assembling the deformable sealing member 3 into the grouting hole of the duct piece 10, and ensuring that the position of the deformable sealing member 3 corresponds to that of the fastening member 2;
s3: the deformable sealing member 3 is sequentially injected with epoxy glue A and epoxy glue B through the grouting pipeline 32, and the epoxy glue A and the epoxy glue B react to generate heat, so that the memory spring 312 extends to push the deformable sealing member 3 and the fastening member 2 to be mutually occluded to form a fixed structure.
S4: and continuously injecting epoxy glue A and epoxy glue B, so that the epoxy glue AB fills the hole between the deformable sealing member 3 and the duct piece 10, wraps the occlusion part of the fastening member 2, and expands the expansion rubber to form a multi-channel waterproof system.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (10)
1. The utility model provides a seal assembly suitable for section of jurisdiction slip casting hole leaking stoppage, its characterized in that, including hoist and mount built-in fitting (1) that is located section of jurisdiction (10), with tight setting component (2) that hoist and mount built-in fitting (1) are connected and be located the slip casting hole of section of jurisdiction (10) and with but tight setting component (2) seal fit's deformation sealing member (3), but the bottom of deformation sealing member (3), deformation sealing member (3) and it has inflation waterproof layer (4) to pour into respectively in the clearance between section of jurisdiction (10), forms dual waterproof system.
2. The sealing assembly suitable for plugging a segment grouting hole as claimed in claim 1, wherein the fastening member (2) comprises a connecting rod (20) arranged inside the segment (10) and a clamping frame (21) arranged at the end part of the connecting rod (20), and a clamping block (22) in an arrow structure is arranged in the clamping frame (21).
3. The sealing assembly suitable for plugging the grouting hole of the duct piece according to claim 2, wherein the deformable sealing member (3) comprises a sealing base (30) fitted in the grouting hole of the duct piece (10), a deformable buckling member (31) arranged on the sealing base (30) and located on the same horizontal plane, and a grouting pipe (32) arranged on the sealing base (30), the grouting pipe (32) is communicated with the grouting hole, and the deformable buckling member is in snap fit with the clamping block (22).
4. The sealing assembly suitable for plugging a segment grouting hole as claimed in claim 3, wherein the deformable buckling member (31) comprises reinforcing rods (310) arranged on the sealing base body (30) and distributed in a cross shape, buckling cavities (311) arranged at the ends of the reinforcing rods (310) and memory springs (312) arranged between adjacent reinforcing rods (310), and the reinforcing rods (310) are pushed to move by the expansion and contraction of the memory springs (312), so that the fixture blocks (22) extend into the buckling cavities (311) and are in snap fit with the buckling cavities (311) to form a combined bearing system.
5. The sealing assembly for plugging segment grouting holes as claimed in claim 3, wherein the grouting pipes (32) are distributed in a cross shape.
6. The sealing assembly suitable for plugging a segment grouting hole as claimed in claim 1, wherein the expansion waterproof layer (4) is arranged on the top of the sealing substrate (30) and expands to form a first waterproof system after epoxy AB glue is injected.
7. The sealing assembly suitable for plugging a segment grouting hole as claimed in claim 4, wherein the expansion waterproof layer (4) is filled in a gap between the deformable sealing member (3) and the segment (10) and wraps the occlusion part of the fixture block (22) and the buckling cavity (311) to form a second waterproof system.
8. The sealing assembly for segment grouting hole plugging according to claim 4, wherein the sealing base (30) is made of C60 concrete, and the connecting rod (20) and the reinforcing rod (310) are made of steel bars.
9. The seal assembly adapted for segment grouting hole plugging according to claim 1, wherein the upper circumferential diameter of the deformable sealing member (3) is larger than the diameter of the grouting hole.
10. The construction method for segment grouting plugging by adopting the sealing assembly as claimed in any one of claims 1 to 9, is characterized by comprising the following steps:
s1: cleaning the grouting holes to ensure that no residual muck exists in the grouting holes;
s2: then assembling the deformable sealing component (3) into the grouting hole of the duct piece (10), and ensuring that the position of the deformable sealing component (3) corresponds to that of the fastening component (2);
s3: sequentially injecting epoxy glue A and epoxy glue B into the deformable sealing member (3) through a grouting pipeline (32), and generating heat through the reaction of the epoxy glue A and the epoxy glue B so that the memory spring (312) extends to push the deformable sealing member (3) and the fastening member (2) to be mutually engaged to form a fixed structure;
s4: and continuously injecting epoxy glue A and epoxy glue B, so that the epoxy glue AB is filled in the hole between the deformable sealing component (3) and the duct piece (10) to wrap the occlusion part of the fastening component (2), and the expansion rubber is expanded to form a multi-channel waterproof system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210662469.6A CN114837704A (en) | 2022-06-13 | 2022-06-13 | Sealing assembly suitable for plugging segment grouting hole and construction method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210662469.6A CN114837704A (en) | 2022-06-13 | 2022-06-13 | Sealing assembly suitable for plugging segment grouting hole and construction method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114837704A true CN114837704A (en) | 2022-08-02 |
Family
ID=82574467
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210662469.6A Pending CN114837704A (en) | 2022-06-13 | 2022-06-13 | Sealing assembly suitable for plugging segment grouting hole and construction method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114837704A (en) |
-
2022
- 2022-06-13 CN CN202210662469.6A patent/CN114837704A/en active Pending
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