Underground waterproof plugging structure and construction method thereof

Abstract

The present application relates to the technical field of building construction, and particularly relates to an underground waterproof plugging structure and a construction method thereof. The underground waterproof plugging structure comprises a side wall waterproof plate, a net-shaped waterproof structure arranged on the side wall waterproof plate, the net-shaped waterproof structure comprising a first waterproof plate and a second waterproof plate, the first waterproof plate and the side wall waterproof plate having a first grout passing channel and a first grout overflow gap therebetween, the second waterproof plate and the side wall waterproof plate having a second grout passing channel and a second grout overflow gap therebetween, a first grouting pipe connected to the first grout passing channel, and a second grouting pipe connected to the first grout passing channel. The net-shaped waterproof structure divides the side wall by small grids, and when the side wall leaks, grout is injected into the first grouting pipe and the second grouting pipe to plug the leakage point. The construction method of the underground waterproof plugging structure comprises the following steps: installing the net-shaped waterproof structure on the side wall; fixing the side wall waterproof plate on the enclosure structure; installing the first grouting pipe and the second grouting pipe on the side wall waterproof plate; and constructing the side wall.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of building construction, in particular to an underground waterproof plugging structure and a construction method thereof. BACKGROUND

[0002] A subway station is an underground structure with large burial depth, long station length, many construction joints and high structural waterproofing requirements. After the underground structure construction is completed, the side wall structure is prone to seepage, and repeated drilling for waterproof plugging work is often required. This method is extremely inconvenient, the sealing is not tight, the repeated drilling plugging workload is large, and the drilling will affect the appearance of the side wall. SUMMARY

[0003] To solve at least one of the above technical problems, the present application provides an underground waterproof plugging structure and a construction method thereof, which adopts the following technical solutions.

[0004] An underground waterproof plugging structure, comprising

[0005] A side wall waterproof plate, which is used to be installed on a surrounding structure in the underground;

[0006] A net-shaped waterproof structure, which is arranged on the water-facing side and the backwater side of the side wall waterproof plate, and comprises a plurality of first waterproof plates and a plurality of second waterproof plates, each first waterproof plate and each second waterproof plate are arranged in cross, the first waterproof plate is connected to the side wall waterproof plate, the first waterproof plate and the side wall waterproof plate have a first grout passage and a first overflow joint, the first grout passage and the first overflow joint are communicated, the second waterproof plate is connected to the side wall waterproof plate, the second waterproof plate and the side wall waterproof plate have a second grout passage and a second overflow joint, the second grout passage and the second overflow joint are communicated, and the first overflow joint and the second overflow joint are communicated with the small mesh formed by the intersection of the first waterproof plate and the second waterproof plate;

[0007] A first grouting pipe, which is used to be installed in the side wall, connected to the side wall waterproof plate and communicated with the first grout passage;

[0008] A second grouting pipe, which is used to be installed in the side wall, connected to the side wall waterproof plate and communicated with the second grout passage.

[0009] The underground waterproofing and leak-stopping structure of this invention has at least the following beneficial effects: Since both the water-facing and back-facing sides of the sidewall waterproofing board are equipped with a mesh waterproofing structure formed by the intersection of each first waterproofing board and each second waterproofing board, the mesh waterproofing structure divides the sidewall into small grids. When water leakage occurs at a certain location on the sidewall, cement grout or polyurethane waterproofing material is injected into the first grouting pipe and the second grouting pipe at the corresponding location. The cement grout or polyurethane waterproofing material flows through the first grouting channel, the first overflow joint, the second grouting channel, and the second overflow joint before reaching the small grid at the leakage point, thus sealing the leakage point. This structure eliminates the need for repeated drilling for waterproofing and leak-stopping, making the leak-stopping work very convenient and requiring less work. It also reduces drilling on the sidewall, ensuring the appearance of the sidewall.

[0010] According to other embodiments of the underground waterproofing and leak-stopping structure of the present invention, the first grouting pipe is provided with a first water-stopping ring.

[0011] According to other embodiments of the underground waterproofing and leak-stopping structure of the present invention, the second grouting pipe is provided with a second water-stopping ring.

[0012] According to other embodiments of the underground waterproofing and leak-stopping structure of the present invention, the first overflow joints are arranged at intervals along the length direction of the first waterproofing membrane.

[0013] According to other embodiments of the underground waterproofing and leak-stopping structure of the present invention, the second overflow joints are arranged at intervals along the length direction of the second waterproofing membrane.

[0014] According to other embodiments of the underground waterproofing and leak-stopping structure of the present invention, the distance between two adjacent first overflow joints on the first waterproofing slab is the same as the distance between two adjacent second overflow joints on the second waterproofing slab.

[0015] According to other embodiments of the underground waterproofing and leak-stopping structure of the present invention, the first grouting pipe is detachably connected to the side wall waterproofing membrane.

[0016] According to other embodiments of the underground waterproofing and leak-stopping structure of the present invention, the second grouting pipe is detachably connected to the side wall waterproofing plate.

[0017] A construction method for an underground waterproofing and leak-stopping structure includes the following steps:

[0018] A mesh waterproof structure is installed on the inner and outer sides of the side wall waterproofing liner. During installation, a first grout passage is reserved between the first waterproofing liner of the mesh waterproof structure and the side wall waterproofing liner, and a first overflow grout joint is reserved on both sides of the first waterproofing liner. A second grout passage is reserved between the second waterproofing liner of the mesh waterproof structure and the side wall waterproofing liner, and a second overflow grout joint is reserved on both sides of the second waterproofing liner.

[0019] The waterproof liner with a mesh waterproof structure on the side wall is fixed to the pile wall of the retaining structure.

[0020] The first grouting pipe is installed on the side wall waterproofing board, so that the first grouting pipe is connected to the first grout passage. The second grouting pipe is installed on the side wall waterproofing board, so that the second grouting pipe is connected to the second grout passage.

[0021] During the construction of the underground sidewall, the first and second grouting pipes are installed through the sidewall.

[0022] According to another embodiment of the present invention, in the construction method of the underground waterproofing and leak-stopping structure, before constructing the underground sidewall, a first water-stop ring is set in the middle of the first grouting pipe, a first widening ring plate is set at the interface between the first grouting pipe and the sidewall waterproofing plate, a second water-stop ring is set in the middle of the second grouting pipe, and a second widening ring plate is set at the interface between the second grouting pipe and the sidewall waterproofing plate. Attached Figure Description

[0023] The present invention will be further described below with reference to the accompanying drawings:

[0024] Figure 1 This is a side sectional view of an embodiment of the present invention. Detailed Implementation

[0025] This section will describe in detail specific embodiments of the present invention. Preferred embodiments of the present invention are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and overall technical solution of the present invention, but they should not be construed as limiting the scope of protection of the present invention.

[0026] In this invention, when directions (up, down, left, right, front, and back) are described, it is only for the purpose of describing the technical solution of this invention, and does not indicate or imply that the technical features referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation of this invention.

[0027] In this invention, "several" means one or more, "multiple" means two or more, "greater than," "less than," "exceeding," etc., are understood to exclude the stated number; "above," "below," "within," etc., are understood to include the stated number. In the description of this invention, the terms "first" and "second" are used only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance or implicitly indicating the number of indicated technical features or the order of the indicated technical features.

[0028] In this invention, unless otherwise explicitly defined, the terms "setting," "installing," and "connecting" should be interpreted broadly. For example, they can refer to a direct connection or an indirect connection through an intermediate medium; a fixed connection, a detachable connection, or an integrally formed connection; a mechanical connection, an electrical connection, or a connection capable of mutual communication; or the internal connection of two components or the interaction between two components. Those skilled in the art can reasonably determine the specific meaning of the above terms in this invention based on the specific content of the technical solution.

[0029] Subway stations are underground structures with great depths, long lengths, and numerous construction joints, requiring high levels of waterproofing. After the underground structure is completed, the side walls are prone to water leakage, often necessitating repeated drilling for waterproofing and sealing. This method is extremely inconvenient, the sealing is not always tight, the repeated drilling for sealing is labor-intensive, and the drilling also affects the appearance of the side walls.

[0030] See Figure 1 This invention provides an underground waterproofing and leak-stopping structure, including a sidewall waterproofing plate 1, a mesh waterproofing structure, a first grouting pipe 3, and a second grouting pipe. The sidewall waterproofing plate 1 is installed on an underground retaining structure 4. The mesh waterproofing structure is located on the water-facing and backwater-facing sides of the sidewall waterproofing plate 1. The mesh waterproofing structure includes multiple first waterproofing plates 2 and multiple second waterproofing plates, which are arranged crosswise. The first waterproofing plates 2 are connected to the sidewall waterproofing plate 1. A first grout passage 20 and a first grout overflow joint are provided between the first waterproofing plate 2 and the sidewall waterproofing plate 1. The channel 20 is connected to the first overflow joint. The second waterproof membrane is connected to the side wall waterproof membrane 1. There is a second grout passage and a second overflow joint between the second waterproof membrane and the side wall waterproof membrane 1. The second grout passage and the second overflow joint are connected. The first overflow joint and the second overflow joint are connected to the small grid formed by the intersection of the first waterproof membrane 2 and the second waterproof membrane. The first grouting pipe 3 is used to be installed in the side wall 5. The first grouting pipe 3 is connected to the side wall waterproof membrane 1 and communicates with the first grout passage 20. The second grouting pipe is used to be installed in the side wall 5. The second grouting pipe is connected to the side wall waterproof membrane 1 and communicates with the second grout passage.

[0031] Because both the water-facing and water-repellent sides of the sidewall waterproofing board 1 are equipped with a mesh waterproofing structure formed by the intersection of each first waterproofing board 2 and each second waterproofing board, the mesh waterproofing structure divides the sidewall 5 into small grids. When water leakage occurs at a certain location on the sidewall 5, cement grout or polyurethane waterproofing material is injected into the first grouting pipe 3 and the second grouting pipe at the corresponding location. The cement grout or polyurethane waterproofing material flows through the first grouting channel 20, the first overflow grouting joint, the second grouting channel, and the second overflow grouting joint before reaching the small grid at the leakage point, thus sealing the leakage point. This structure eliminates the need for repeated drilling for waterproofing and leak sealing, making the leak sealing work very convenient and requiring less work. It also reduces drilling on the sidewall 5, ensuring the appearance of the sidewall 5.

[0032] In some embodiments, the first overflow joints are spaced apart along the length of the first waterproof membrane 2, and the second overflow joints are spaced apart along the length of the second waterproof membrane.

[0033] Furthermore, the spacing between two adjacent first overflow joints on the first waterproof membrane 2 is the same as the spacing between two adjacent second overflow joints on the second waterproof membrane.

[0034] Specifically, both the first waterproofing membrane 2 and the second waterproofing membrane are strip structures. The first waterproofing membrane 2 is horizontally installed on the side wall waterproofing membrane 1, and the second waterproofing membrane is vertically installed on the side wall waterproofing membrane 1. First extension plates 21 are installed on both sides of the first waterproofing membrane 2. The first extension plates 21 are adhered to or welded to the side wall waterproofing membrane 1. The central arch of the first waterproofing membrane 2 forms a first grout passage 20 with the side wall waterproofing membrane 1. The first extension plates 21 are partially connected to and partially disconnected from the side wall waterproofing membrane 1. Along the length of the first waterproofing membrane 2, the first extension plates 21 and the side wall waterproofing membrane 1 are connected and disconnected. The components are arranged in an alternating pattern. The non-connected portions of the first extension plate 21 and the side wall waterproofing 1 form the first grout overflow joint. The second extension plates are set on both sides of the second waterproofing 1 and are pasted or welded to the side wall waterproofing 1. The middle arch of the second waterproofing 1 forms the second grout passage with the side wall waterproofing 1. The second extension plate and the side wall waterproofing 1 are partially connected and partially unconnected. Along the length of the second waterproofing 1, the connected and unconnected portions of the second extension plate and the side wall waterproofing 1 are arranged alternately. The unconnected portions of the second extension plate and the side wall waterproofing 1 form the second grout overflow joint.

[0035] In this structure, the length and width of each small grid in the mesh waterproofing structure are the length of the first overflow joint and the second overflow joint. Therefore, each small grid in the mesh waterproofing structure is formed by the first overflow joint of the first waterproofing plate 2 and the second overflow joint of the second waterproofing plate. The grout overflowing from the first overflow joint and the second overflow joint will flow into the small grid formed by them, and seal the leakage point in the area of ​​the small grid.

[0036] Since both the first grouting pipe 3 and the second grouting pipe are installed in the side wall 5, there are gaps between the first grouting pipe 3 and the side wall 5, and between the second grouting pipe and the side wall 5. In order to prevent grout or water from flowing out from these gaps during the grouting process of the first grouting pipe 3 and the second grouting pipe, in some embodiments, the first grouting pipe 3 is provided with a first water-stopping ring 31, and the second grouting pipe is provided with a second water-stopping ring.

[0037] Specifically, the first water-stop ring 31 is a circular structure welded to the middle of the outer side of the first grouting pipe 3. The first water-stop ring 31 can act as a barrier to prevent water from flowing out from the gap between the first water-stop ring 31 and the side wall 5. The second grouting pipe is a circular structure welded to the middle of the outer side of the second grouting pipe. The second water-stop ring can act as a barrier to prevent water from flowing out from the gap between the second water-stop ring and the side wall 5.

[0038] In some embodiments, the first grouting pipe 3 is detachably connected to the side wall waterproofing membrane 1, and the second grouting pipe is detachably connected to the side wall waterproofing membrane 1.

[0039] Specifically, the outer wall of the first grouting pipe 3 is provided with external threads, and the side wall waterproofing plate 1 is provided with a first threaded hole that connects to the first grout passage 20. The first grouting pipe 3 is threadedly connected to the first threaded hole of the side wall waterproofing plate 1. Similarly, the outer wall of the second grouting pipe is provided with external threads, and the side wall waterproofing plate 1 is provided with a second threaded hole that connects to the second grout passage. The second grouting pipe is threadedly connected to the second threaded hole of the side wall waterproofing plate 1.

[0040] In some embodiments, a first widening ring plate 32 is provided at the connection between the first grouting pipe 3 and the side wall waterproofing 1, and a second widening ring plate is provided at the connection between the second grouting pipe and the side wall waterproofing 1.

[0041] Specifically, the first widened ring plate 32 is fitted onto the first grouting pipe 3. The connection between the first grouting pipe 3 and the side wall waterproofing membrane 1 is secured with adhesive to firmly bond the side wall waterproofing membrane 1 and the first widened ring plate 32, thereby improving the sealing performance of the connection between the first grouting pipe 3 and the side wall waterproofing membrane 1. The second widened ring plate is fitted onto the second grouting pipe. The connection between the second grouting pipe and the side wall waterproofing membrane 1 is secured with adhesive to firmly bond the side wall waterproofing membrane 1 and the second widened ring plate, thereby improving the sealing performance of the connection between the second grouting pipe and the side wall waterproofing membrane 1.

[0042] This invention also provides a construction method for an underground waterproofing and leak-stopping structure, comprising the following steps:

[0043] A mesh waterproof structure is installed on the inner and outer sides of the side wall waterproofing board 1. During installation, a first grout passage 20 is reserved between the first waterproofing board 2 of the mesh waterproof structure and the side wall waterproofing board 1, and a first overflow grout joint is reserved on both sides of the first waterproofing board 2 at intervals. A second grout passage is reserved between the second waterproofing board of the mesh waterproof structure and the side wall waterproofing board 1, and a second overflow grout joint is reserved on both sides of the second waterproofing board at intervals.

[0044] The side wall waterproofing plate 1 with a mesh waterproofing structure is fixed to the pile wall of the retaining structure 4.

[0045] Install the first grouting pipe 3 on the side wall waterproofing plate 1 so that the first grouting pipe 3 is connected to the first grout passage 20. Install the second grouting pipe on the side wall waterproofing plate 1 so that the second grouting pipe is connected to the second grout passage.

[0046] During the construction of the underground structure side wall 5, the first grouting pipe 3 and the second grouting pipe are installed in the side wall 5.

[0047] In some embodiments, before constructing the underground structure sidewall 5, a first water-stop ring 31 is provided in the middle of the first grouting pipe 3, and the interface between the first grouting pipe 3 and the sidewall waterproofing membrane 1 is connected by a first widening ring plate 32. A second water-stop ring is provided in the middle of the second grouting pipe, and the interface between the second grouting pipe and the sidewall waterproofing membrane 1 is connected by a second widening ring plate.

[0048] Step 1: Vertically and horizontally attach or weld the first waterproofing membrane 2 and the second waterproofing membrane to the inner and outer sides of the side wall waterproofing membrane 1. During welding, a first grout passage 20 is reserved between the first waterproofing membrane 2 and the side wall waterproofing membrane 1, and a first overflow grout joint is reserved on both sides of the adhesive joint or weld joint between the first waterproofing membrane 2 and the side wall waterproofing membrane 1. A second grout passage is reserved between the second waterproofing membrane and the side wall waterproofing membrane 1, and a second overflow grout joint is reserved on both sides of the adhesive joint or weld joint between the second waterproofing membrane and the side wall waterproofing membrane 1.

[0049] Step 2: Attach and fix the side wall waterproofing board 1, which is equipped with the first waterproofing board 2 and the second waterproofing board, to the pile wall of the retaining structure 4.

[0050] Step 3: Process the first grouting pipe 3 and the second grouting pipe. The first grouting pipe 3 and the second grouting pipe are threadedly connected to the side wall waterproofing membrane 1. A first water-stop ring 31 is set in the middle of the first grouting pipe 3. The end of the first grouting pipe 3 is widened by a first widening ring plate 32 at the connection between the first grouting pipe 3 and the side wall waterproofing membrane 1. The side wall waterproofing membrane 1 and the first widening ring plate 32 are firmly bonded together with glue at the connection between the first grouting pipe 3 and the side wall waterproofing membrane 1. A second water-stop ring is set in the middle of the second grouting pipe. The end of the second grouting pipe is widened by a second widening ring plate at the connection between the second grouting pipe and the side wall waterproofing membrane 1. The side wall waterproofing membrane 1 and the second widening ring plate are firmly bonded together with glue at the connection between the second grouting pipe and the side wall waterproofing membrane 1.

[0051] Step 4: Construct the underground structure side wall 5. When constructing side wall 5, it is necessary to protect the first grouting pipe 3 and the second grouting pipe.

[0052] Step 5: After the construction of the underground structure side wall 5 is completed and the structure reaches the design strength, if water leakage occurs at the construction joint of the side wall 5, cement grout or polyurethane waterproof material is injected through the first grouting pipe 3 and the second grouting pipe. The cement grout or polyurethane waterproof material enters the leakage gap through the first grout passage 20, the first grout overflow joint, the second grout passage, and the second grout overflow joint to seal the leak. After use, the first grouting pipe 3 and the second grouting pipe are temporarily or permanently sealed depending on the sealing situation.

[0053] Of course, this application is not limited to the above-described embodiments. Those skilled in the art can make equivalent modifications or substitutions without departing from the spirit of this invention. All such equivalent modifications or substitutions are included within the scope defined by the claims of this application.

Claims

1. An underground waterproofing structure, characterized by: comprising a side wall waterproof plate for being installed on a retaining structure in the ground; a mesh waterproof structure arranged on the water-facing side and the backwater side of the side wall waterproof plate, the mesh waterproof structure comprising a plurality of first waterproof plates and a plurality of second waterproof plates, each of the first waterproof plates and each of the second waterproof plates being arranged in a cross manner, the first waterproof plates being connected to the side wall waterproof plate, both sides of the first waterproof plate being provided with a first extension plate, the first waterproof plate and the side wall waterproof plate having a first slurry passage and a first slurry overflow gap, the middle of the first waterproof plate being arched to form the first slurry passage with the side wall waterproof plate, a part of the first extension plate and the side wall waterproof plate being connected and a part being not connected, along the length direction of the first waterproof plate, the connected part and the not connected part of the first extension plate and the side wall waterproof plate being arranged in a staggered manner, the not connected part of the first extension plate and the side wall waterproof plate forming the first slurry overflow gap, the first slurry passage and the first slurry overflow gap being communicated, the second waterproof plates being connected to the side wall waterproof plate, both sides of the second waterproof plate being provided with a second extension plate, the second waterproof plate and the side wall waterproof plate having a second slurry passage and a second slurry overflow gap, the middle of the second waterproof plate being arched to form the second slurry passage with the side wall waterproof plate, a part of the second extension plate and the side wall waterproof plate being connected and a part being not connected, along the length direction of the second waterproof plate, the connected part and the not connected part of the second extension plate and the side wall waterproof plate being arranged in a staggered manner, the not connected part of the second extension plate and the side wall waterproof plate forming the second slurry overflow gap, the second slurry passage and the second slurry overflow gap being communicated, the first slurry overflow gap and the second slurry overflow gap being communicated with the small mesh formed by the cross of the first waterproof plate and the second waterproof plate; a first grouting pipe for being installed in the side wall, the first grouting pipe being connected to the side wall waterproof plate and communicating with the first slurry passage; a second grouting pipe for being installed in the side wall, the second grouting pipe being connected to the side wall waterproof plate and communicating with the second slurry passage.

2. The underground waterproof plugging structure according to claim 1, characterized in that: A first water stop ring is arranged on the first grouting pipe.

3. The underground waterproof plugging structure according to claim 1, characterized in that: A second water stop ring is arranged on the second grouting pipe.

4. The underground waterproof plugging structure according to claim 1, characterized in that: The first slurry overflow gaps are arranged in a spaced manner along the length direction of the first waterproof plate.

5. The underground waterproof plugging structure according to claim 4, characterized in that: The second slurry overflow gaps are arranged in a spaced manner along the length direction of the second waterproof plate.

6. The underground waterproof plugging structure according to claim 5, characterized in that: The interval between two adjacent first slurry overflow gaps on the first waterproof plate is the same as the interval between two adjacent second slurry overflow gaps on the second waterproof plate.

7. The underground waterproof plugging structure according to claim 1, characterized in that: The first grouting pipe and the side wall waterproof plate are detachably connected.

8. The underground waterproof plugging structure according to claim 1, characterized in that: The second grouting pipe and the side wall waterproof plate are detachably connected.

9. A method of constructing an underground waterproofing structure, characterized by, The underground waterproof plugging structure according to any one of claims 1 to 8 comprises the following steps: The mesh waterproof structure is installed inside and outside the side wall waterproof plate, when installing, a first overflow channel is reserved between the first waterproof plate of the mesh waterproof structure and the side wall waterproof plate, first overflow slits are reserved at both sides of the first waterproof plate, a second overflow channel is reserved between the second waterproof plate of the mesh waterproof structure and the side wall waterproof plate, and second overflow slits are reserved at both sides of the second waterproof plate; The side wall waterproof plate provided with the mesh waterproof structure is fixed on the enclosure pile wall; The first grouting pipe is installed on the side wall waterproof plate, so that the first grouting pipe communicates with the first overflow channel, and the second grouting pipe is installed on the side wall waterproof plate, so that the second grouting pipe communicates with the second overflow channel; The underground side wall is constructed, and when the side wall is constructed, the first grouting pipe and the second grouting pipe are arranged in the side wall.

10. The construction method of the underground waterproof plugging structure according to claim 9, characterized in that: Before the underground side wall is constructed, a first water stop ring is arranged at the middle part of the first grouting pipe, a first widened ring plate is arranged at the joint between the first grouting pipe and the side wall waterproof plate, a second water stop ring is arranged at the middle part of the second grouting pipe, and a second widened ring plate is arranged at the joint between the second grouting pipe and the side wall waterproof plate.

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