A method for treating water leakage at a wall pipe part

Abstract

The application discloses a kind of wall pipe part leakage water treatment methods, it is related to the technical field of track traffic structure disease treatment in operation period, comprising the following steps: S1, first grouting hole is set on wall, first grouting hole extends to the outer wall of wall pipe obliquely and is located on the one side of water stop flange arranged on wall pipe;S2, first grouting pipe is installed in first grouting hole, grouting is carried out to first grouting hole, and first grouting plugging ring is formed on the outer wall of wall pipe;S3, second grouting hole is set on wall, second grouting hole extends to the outer wall of wall pipe obliquely and is located on the other side of water stop flange arranged on wall pipe;S4, second grouting pipe is installed in second grouting hole, grouting is carried out to second grouting hole, and second grouting plugging ring is formed on the outer wall of wall pipe.The concrete around wall pipe on the two sides of water stop flange is grouted in the application, forms first grouting plugging ring and second grouting plugging ring, can effectively block the leakage water passage around wall pipe, and improve waterproof capacity.

Description

Technical Field

[0001] This invention relates to the field of structural defect treatment technology for rail transit during operation, and in particular to a method for treating water leakage at the location of through-wall pipes. Background Technology

[0002] To facilitate the interconnection of various pipelines, through-wall pipes are indispensable in buildings, especially in the concealed works of subways. Although through-wall pipes themselves have anti-seepage structures, they are prone to separation from the surrounding concrete due to environmental changes, structural deformation, and train vibrations, forming leakage channels and causing water leakage problems. Prolonged leakage not only affects the operation of surrounding equipment but also deteriorates the surrounding concrete, reducing structural durability. Therefore, when leakage occurs at the through-wall pipe location, it should be addressed promptly.

[0003] Currently, water leakage at wall penetrations is primarily addressed using grouting and surface sealing methods. Grouting typically involves injecting chemical grout around the penetration, and the sealing is considered complete once the leakage disappears. However, the internal leakage channels are not completely blocked. In subway structures with high water pressure, this can easily damage the grout barrier, leading to recurrence. Surface sealing is usually used for minor leaks, applying quick-drying cement around the penetration. While this method provides rapid relief, the presence of leakage indicates damage to the overall waterproofing structure. Surface sealing is only a temporary fix; the internal structural defects remain unaddressed, making the area susceptible to recurrence under the influence of train vibrations, water pressure, and other factors. Therefore, while these methods offer quick relief, they do not completely eliminate the risk of leakage.

[0004] A search revealed no relevant solutions for water leakage at wall-penetrating pipe locations in operational rail transit structures in existing patent literature. However, Chinese patent application CN113669509A discloses a method for repairing indoor wall-penetrating pipe leakage, comprising the following steps: S1, on-site inspection and cleaning; S2, laying grouting holes along the outer periphery of the wall-penetrating pipe on the back side of the building structural slab, and injecting acrylic slurry to form a reconstructed waterproof layer between the water-facing side of the building structural slab and the original water-facing waterproof structure; after grouting, sealing the grouting holes with a sealing adhesive; S3, chiseling a V-shaped groove along the outer periphery of the wall-penetrating pipe on the back side of the building structural slab; uniformly spraying a water-based penetrating crystalline waterproof coating twice on the back side of the building structural slab and the surface of the V-shaped groove; repairing the V-shaped groove with a sealing adhesive, and uniformly applying a cement-based penetrating crystalline polymer waterproof coating twice on the back side of the building structural slab. Whether it's adding another waterproof layer or repairing the V-groove with sealing adhesive, this solution only seals the surface, which is a superficial solution that doesn't address the root cause. The internal structural defects remain untreated. While it might work for ordinary walls, for operational rail transit structures, it's prone to leaks due to factors like train vibration and water pressure.

[0005] Therefore, finding a solution to effectively address the water seepage problem at the wall penetration points of rail transit structures during operation is an urgent technical issue. Summary of the Invention

[0006] The purpose of this invention is to provide a method for treating water leakage at the wall penetration pipe, in order to solve the problems existing in the prior art. By setting a first grouting hole and a second grouting hole and extending them to both sides of the water-stop flange, the concrete around the wall penetration pipe on both sides of the water-stop flange can be reinforced by grouting, forming a first grouting sealing ring and a second grouting sealing ring respectively, which can effectively seal the water leakage channel around the wall penetration pipe and improve the waterproofing ability.

[0007] To achieve the above objectives, the present invention provides the following solution:

[0008] This invention provides a method for treating water leakage at the point where a pipe penetrates a wall, comprising the following steps:

[0009] S1. A first grouting hole is opened on the wall, the first grouting hole extends obliquely to the outer wall of the through-wall pipe and is located on one side of the water-stop flange installed on the through-wall pipe.

[0010] S2. Install a first grouting pipe in the first grouting hole, grout the first grouting hole, and form a first grouting sealing ring on the outer wall of the through-wall pipe;

[0011] S3. A second grouting hole is opened on the wall, the second grouting hole extends obliquely to the outer wall of the through-wall pipe and is located on the other side of the water-stop flange installed on the through-wall pipe.

[0012] S4. Install a second grouting pipe in the second grouting hole, grout the second grouting hole, and form a second grouting sealing ring on the outer wall of the through-wall pipe.

[0013] Preferably, both the first grouting hole and the second grouting hole are evenly distributed in multiples along the circumferential direction on the outer diameter side of the through-wall pipe.

[0014] Preferably, the distance between the first grouting hole and the through-wall pipe is greater than the distance between the second grouting hole and the through-wall pipe, and the first grouting hole and the second grouting hole are distributed circumferentially at intervals.

[0015] Preferably, when grouting the first grouting hole and the second grouting hole, the adjacent grouting hole is used as the observation hole. After grout flows out, the next grouting hole is grouted. The control point is when the grouting pressure rises significantly after the last grouting hole is grouted.

[0016] Preferably, before step S1, the gaps around the through-wall pipe on the working side are sealed and the wall surface is repaired, including the following:

[0017] Remove the deteriorated concrete around the through-wall pipe and clean up the impurities, and enlarge the hole;

[0018] Water-swellable rubber is installed around the through-wall pipe in the enlarged hole and compacted.

[0019] Preferably, when installing water-swellable rubber, two strips are installed sequentially around the through-wall pipe and compacted.

[0020] Preferably, a first quick-drying cement is filled around the wall-penetrating pipe on the outside of the water-swellable rubber and inside the enlarged hole.

[0021] Preferably, after completing step S4, step S5 is performed, which involves filling and compacting the second quick-drying cement around the through-wall pipe until it is flush with the surface of the wall structure.

[0022] Preferably, after completing step S5, step S6 is performed, which involves removing all the first grouting pipes and the second grouting pipes, and sealing the first grouting hole and the second grouting hole with a third quick-drying cement.

[0023] Preferably, after completing step S6, step S7 is performed, which involves applying a penetrating crystalline waterproof coating to the wall surface around the through-wall pipe, with the coating area covering the wall surface where the first grouting hole and the second grouting hole are located.

[0024] The present invention achieves the following technical effects compared to the prior art:

[0025] (1) By setting a first grouting hole and a second grouting hole and extending them to both sides of the water-stop flange, the present invention can grout and reinforce the concrete around the through-wall pipe on both sides of the water-stop flange, forming a first grouting sealing ring and a second grouting sealing ring respectively, which can effectively seal the seepage channels around the through-wall pipe, improve the ability to resist high water pressure, and improve the waterproofing ability.

[0026] (2) In this invention, the first grouting hole and the second grouting hole are evenly distributed in multiple ways along the circumference on the outer diameter side of the wall-penetrating pipe, which can inject grout along the circumference of the wall-penetrating pipe, ensuring that the grout is distributed along the circumference of the wall-penetrating pipe, and further improving the sealing effect on the leakage channel.

[0027] (3) In this invention, the distance between the first grouting hole and the through-wall pipe is greater than the distance between the second grouting hole and the through-wall pipe, and the first grouting hole and the second grouting hole are distributed circumferentially, so that the distance between the first grouting hole and the second grouting hole is distributed and the distance is increased to avoid leakage and connection between the grouting holes.

[0028] (4) The present invention enlarges the hole around the through-wall pipe and installs water-swellable rubber, which can increase the water-stopping line and improve the waterproof effect. Furthermore, by filling the outside of the water-swellable rubber with the first quick-drying cement, the position of the water-swellable rubber can be effectively fixed, forming a constraint in the axial direction and causing it to deform radially, further enhancing the water-stopping effect on the leakage channel. At the same time, the first quick-drying cement forms another water-stopping line, improving the waterproof effect. Finally, the second quick-drying cement is used for further sealing. Attached Figure Description

[0029] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0030] Figure 1 This is a flowchart of the method for treating water leakage at the wall penetration point of the present invention;

[0031] Figure 2 This is a cross-sectional schematic diagram of the treatment effect of the present invention;

[0032] Figure 3 This is a schematic diagram showing the arrangement of the first and second grouting holes in this invention;

[0033] Figure 4 for Figure 2 Schematic diagram of the structure in mid-section A;

[0034] Figure 5 for Figure 2 Schematic diagram of section B;

[0035] Among them, 1. through-wall pipe; 2. first grouting pipe; 21. first grouting hole; 3. second grouting pipe; 31. second grouting hole; 4. wall; 5. first quick-drying cement; 6. second quick-drying cement; 7. water-swellable rubber; 8. first grouting sealing ring; 9. second grouting sealing ring; 10. water-stop flange. Detailed Implementation

[0036] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0037] The purpose of this invention is to provide a method for treating water leakage at the wall penetration pipe, in order to solve the problems existing in the prior art. By setting a first grouting hole and a second grouting hole and extending them to both sides of the water-stop flange, the concrete around the wall penetration pipe on both sides of the water-stop flange can be reinforced by grouting, forming a first grouting sealing ring and a second grouting sealing ring respectively, which can effectively seal the water leakage channel around the wall penetration pipe and improve the waterproofing ability.

[0038] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0039] like Figures 1-5 As shown, the present invention provides a method for treating water leakage at the location of a wall-penetrating pipe 1, which includes the following steps during construction:

[0040] S1. A first grouting hole 21 is opened on the wall 4. The first grouting hole 21 extends obliquely from the wall surface toward the through-wall pipe 1 to the outer wall of the through-wall pipe 1, and extends to one side of the water-stop flange 10 installed on the through-wall pipe 1. It can be located on the near end side or on the far end side.

[0041] S2. Install the first grouting pipe 2 in the first grouting hole 21 and grout the first grouting hole 21. The grout can be made of organic grouting materials such as polyurethane and epoxy resin. It mainly fills the gaps and seals the seepage channels. After the grouting is completed, the first grouting sealing ring 8 is formed on the outer wall of the through-wall pipe 1.

[0042] S3. A second grouting hole 31 is opened on the wall 4. The second grouting hole 31 extends obliquely from the wall surface toward the through-wall pipe 1 to the outer wall of the through-wall pipe 1, and extends to the other side of the water-stop flange 10 installed on the through-wall pipe 1. That is, when the first grouting hole 21 extends to the side of the near end, the second grouting hole 31 extends to the other side of the far end, and when the first grouting hole 21 extends to the side of the far end, the second grouting hole 31 extends to the other side of the near end.

[0043] S4. Install the second grouting pipe 3 in the second grouting hole 31, and grout the second grouting hole 31. The grout injected is the same as the grout injected in the first grouting hole 21. After the grouting is completed, a second grouting sealing ring 9 is formed on the outer wall of the through-wall pipe 1.

[0044] This invention, by setting a first grouting hole 21 and a second grouting hole 31 and extending them to both sides of the water-stop flange 10, can grout and reinforce the concrete around the through-wall pipe 1 on both sides of the water-stop flange 10, forming a first grouting sealing ring 8 and a second grouting sealing ring 9 respectively, thus forming a two-stage sealing, effectively sealing the leakage channels around the through-wall pipe 1 and improving the waterproofing capability.

[0045] like Figure 2 As shown, multiple first grouting holes 21 and multiple second grouting holes 31 are evenly distributed along the circumference on the outer diameter side of the through-wall pipe 1. The arrangement of multiple first grouting holes 21 and multiple second grouting holes 31 can inject grout along the circumference of the through-wall pipe 1, avoiding the problem of incomplete grout filling caused by poor grout flow due to uneven circumferential gaps in the through-wall pipe 1, ensuring that the grout is distributed along the circumference of the through-wall pipe 1, and further improving the sealing effect on the leakage channel.

[0046] Furthermore, the distance between the first grouting hole 21 and the through-wall pipe 1 can be greater than the distance between the second grouting hole 31 and the through-wall pipe 1. In this case, the first grouting hole 21 extends to one side of the far end of the water-stop flange 10, and the second grouting hole 31 extends to the other side of the near end of the water-stop flange 10. In addition, the first grouting hole 21 and the second grouting hole 31 are distributed circumferentially, so that the spacing between the first grouting hole 21 and the second grouting hole 31 can be increased compared to the arrangement in the same radial direction, thus avoiding leakage and connection between the first grouting hole 21 and the second grouting hole 31.

[0047] When grouting the first grouting hole 21 and the second grouting hole 31, the adjacent grouting hole can be used as an observation hole. After the grout flows out, the next grouting hole is grouted. The control point is when the grouting pressure rises significantly after the last grouting hole is grouted.

[0048] Before proceeding to step S1, the work can be carried out by sealing the gaps around the through-wall pipe 1 and repairing the surface of the wall 4, including the following:

[0049] Remove the deteriorated concrete around the through-wall pipe 1 on the working side and clean up the impurities, and enlarge the hole to form an enlarged hole with a certain diameter and a certain depth.

[0050] Install water-swellable rubber 7 around the wall-penetrating pipe 1 in the enlarged hole and compact it. The installation of water-swellable rubber 7 can add a water-stopping line and improve the waterproof effect.

[0051] When installing the water-swellable rubber 7, two can be installed sequentially around the wall-penetrating pipe 1 and compacted. Since uneven installation is very likely to occur during the installation process, if only one water-swellable rubber 7 is installed, the sealing effect may not achieve the desired long-term effect. Installing two water-swellable rubber 7 can make up for the hidden dangers left after the first one is installed. After further compaction, the two can achieve a better sealing effect.

[0052] A first quick-drying cement 5 is filled around the wall-penetrating pipe 1 on the outside of the water-swellable rubber 7 and inside the enlarged hole. After the first quick-drying cement 5 is installed, there is still some space in the enlarged hole for filling with a second quick-drying cement 6. By filling the outside of the water-swellable rubber 7 with the first quick-drying cement 5, the position of the water-swellable rubber 7 can be effectively fixed, forming an axial constraint that causes radial deformation, further enhancing the water-stopping effect on the leakage channel. At the same time, the first quick-drying cement 5 forms another water-stopping line, improving the waterproofing effect. It should be noted that the first quick-drying cement 5, the second quick-drying cement 6, and the third quick-drying cement used to seal the grouting hole can all be of the same type of quick-drying cement.

[0053] After completing step S4, step S5 is performed, which involves filling and compacting the second quick-drying cement 6 around the through-wall pipe 1 until it is flush with the surface of the wall structure 4. This is achieved by filling the first quick-drying cement 5 and the second quick-drying cement 6 after installing the water-swellable rubber 7, with the second quick-drying cement 6 providing further sealing. Ultimately, this invention employs a multi-layered waterproofing system consisting of two-stage grouting sealing rings (including a first grouting sealing ring 8 and a second grouting sealing ring 9), water-swellable rubber 7, quick-drying cement, and high-performance seepage-reducing crystallizing material (penetrating crystallizing waterproof coating). This fully leverages the advantages of each material, achieving multiple treatment effects such as leakage control, structural reinforcement, and risk prevention.

[0054] After completing step S5, proceed to step S6, which involves removing all first grouting pipes 2 and second grouting pipes 3, and using third quick-drying cement to seal the first grouting hole 21 and the second grouting hole 31.

[0055] After completing step S6, proceed to step S7, which involves applying a penetrating crystalline waterproof coating to the wall surface around the through-wall pipe 1, covering the wall surface where the first grouting hole 21 and the second grouting hole 31 are located.

[0056] The specific implementation method of this invention is as follows:

[0057] (1) Chisel away the deteriorated concrete and clean up the impurities around the through-wall pipe 1: Use an electric hammer or other tools to chisel away the deteriorated concrete around the through-wall pipe 1 and enlarge the hole. The enlarged hole is 15mm wide and 80mm deep.

[0058] (2) Install double-layer water-swellable rubber 7: In the enlarged hole formed in step (1), install two 15mm×20mm water-swellable rubber 7 around the through-wall pipe 1 and compact them;

[0059] (3) Filling with first fast-drying cement 5: Fill the hole with first fast-drying cement 5 with a thickness of 20mm around the through-wall pipe 1;

[0060] (4) Arrange the first grouting hole 21: Arrange several first grouting holes 21 in a circumferential manner at a distance of 200mm from the outer diameter of the through-wall pipe 1. The angle of the first grouting hole 21 is between 20 degrees and 30 degrees, and is adjusted according to the thickness of the wall 4 and the position of the water-stop flange 10. The depth of the first grouting hole 21 is 10mm from the outer wall of the through-wall pipe 1.

[0061] (5) Grouting of the first grouting hole 21: Install the first grouting pipe 2, and grout the first grouting hole 21 in a clockwise or counterclockwise direction with a grouting pressure of 0.1 to 0.3 MPa. Use the adjacent grouting hole as an observation hole. After the grout flows out, proceed to the next hole for grouting. Finally, the grouting of the grouting hole ends when the grouting pressure rises significantly as the control point.

[0062] (6) Setting up the second grouting hole 31: The second grouting hole 31 is set up circumferentially at a distance of 100mm from the outer diameter of the through-wall pipe 1. The position of the second grouting hole 31 is distributed at intervals with the position of the first grouting hole 21. The angle of the second grouting hole 31 is between 20 degrees and 45 degrees, and is adjusted according to the thickness of the wall 4 and the position of the water-stop flange 10. The depth of the second grouting hole 31 is 10mm from the outer wall of the through-wall pipe 1.

[0063] (7) Grouting of the second grouting hole 31: Install the second grouting pipe 3, and grout the second grouting hole 31 in a clockwise or counterclockwise direction with a grouting pressure of 0.1 to 0.3 MPa. Use the adjacent grouting hole as an observation hole. After the grout flows out, proceed to the next hole for grouting. Finally, the grouting of the grouting hole ends when the grouting pressure rises significantly as the control point.

[0064] (8) Filling with second quick-drying cement 6: Based on step (3), continue to fill and compact the second quick-drying cement 6 around the through-wall pipe 1. The theoretical filling thickness is 20mm, which is flush with the surface of the structure.

[0065] (9) Remove the first grouting pipe 2 and the second grouting pipe 3 and seal the first grouting hole 21 and the second grouting hole 31: Remove all grouting pipes and seal the holes with the third quick-drying cement;

[0066] (10) Apply penetrating crystallizer: Apply high-performance penetrating crystallizer (penetrating crystallizer waterproof coating) around the wall-penetrating pipe 1 to restore the structural surface. The application range is controlled by covering the first grouting hole 21 (the grouting hole that is farther away from the wall-penetrating pipe 1).

[0067] Specific examples have been used to illustrate the principles and implementation methods of this invention. The descriptions of the above embodiments are only for the purpose of helping to understand the method and core ideas of this invention. Furthermore, those skilled in the art will recognize that, based on the ideas of this invention, there will be changes in the specific implementation methods and application scope. Therefore, the content of this specification should not be construed as a limitation of this invention.

Claims

1. A method for treating water leakage at wall penetration pipe locations, characterized in that, Includes the following steps: S1. A first grouting hole is opened on the wall, the first grouting hole extends obliquely to the outer wall of the through-wall pipe and is located on one side of the water-stop flange installed on the through-wall pipe. S2. Install a first grouting pipe in the first grouting hole, grout the first grouting hole, and form a first grouting sealing ring on the outer wall of the through-wall pipe; S3. A second grouting hole is opened on the wall, the second grouting hole extends obliquely to the outer wall of the through-wall pipe and is located on the other side of the water-stop flange installed on the through-wall pipe. S4. Install a second grouting pipe in the second grouting hole, grout the second grouting hole, and form a second grouting sealing ring on the outer wall of the through-wall pipe; S5. Fill and compact the second quick-drying cement around the through-wall pipe until it is flush with the surface of the wall structure. The first grouting hole and the second grouting hole are respectively extended to both sides of the water-stop flange. Grouting is performed to reinforce the concrete around the through-wall pipe on both sides of the water-stop flange, forming the first grouting sealing ring and the second grouting sealing ring respectively, to seal the leakage channel around the through-wall pipe. Both the first grouting hole and the second grouting hole are evenly distributed in multiples along the circumferential direction on the outer diameter side of the through-wall pipe; When grouting the first grouting hole and the second grouting hole, the adjacent grouting hole is used as the observation hole. After the grout flows out, the next grouting hole is grouted. The control point is when the grouting pressure rises significantly after the last grouting hole is grouted. Before proceeding to step S1, the work includes sealing the gaps around the through-wall pipe on the working side and repairing the wall surface: removing the deteriorated concrete around the through-wall pipe and cleaning up impurities, and enlarging the hole. Water-swellable rubber is then installed around the through-wall pipe in the enlarged hole and compacted. A first quick-drying cement is filled around the wall-penetrating pipe on the outside of the water-swellable rubber and inside the enlarged hole.

2. The method for treating water leakage at the wall penetration pipe location according to claim 1, characterized in that: The distance between the first grouting hole and the through-wall pipe is greater than the distance between the second grouting hole and the through-wall pipe, and the first grouting hole and the second grouting hole are distributed circumferentially.

3. The method for treating water leakage at the wall penetration pipe location according to claim 2, characterized in that: When installing water-swellable rubber, install two strips sequentially around the through-wall pipe and compact them.

4. The method for treating water leakage at the wall penetration pipe location according to claim 3, characterized in that: After completing step S5, proceed to step S6, which involves removing all the first and second grouting pipes and sealing the first and second grouting holes with third quick-drying cement.

5. The method for treating water leakage at the wall penetration pipe location according to claim 4, characterized in that: After completing step S6, proceed to step S7, which involves applying a penetrating crystalline waterproof coating to the wall surface around the through-wall pipe, covering the wall surface where the first and second grouting holes are located.

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