A subway tunnel construction system for preventing leakage of an upper drainage pipeline and a construction method thereof

Abstract

The application provides a subway tunnel construction leakage prevention system for an upper drainage pipeline and a construction method, which comprises a sealing support assembly, the sealing support assembly comprises a plugging ring, a through hole, two sealing rings, a glue discharging hole, two mounting grooves, a sealing bolt, a fixing bolt, a support rod, a water conveying belt, a connecting groove and a glue injection hole; the two mounting grooves are symmetrically arranged on the two sides of the outer wall of the plugging ring. The position of the plugging ring is limited by the sealing ring, the support rod is inserted into the through hole, at this time, the connecting joint of the drainage pipeline body can be plugged by expanding the water stopping glue, thereby preventing the water source in the pipeline from penetrating through the connecting joint; when uneven settlement of the stratum occurs, the drainage pipeline body can be supported by the support rod, so that the situation that the joint of the drainage pipeline body is broken and the gap is increased to cause leakage is avoided; the water conveying belt is used as a drainage pipe, so that the anti-leakage effect of the pipeline is enhanced.

Description

Technical Field

[0001] This invention relates to a system and construction method, specifically a system and construction method for preventing leakage from overhead drainage pipes during subway tunnel construction, belonging to the field of tunnel construction technology. Background Technology

[0002] With the rapid pace of urban development in my country, subways have become a common solution for alleviating urban traffic congestion. Subway projects have become an important part of urban construction, playing an increasingly vital role. Since subway construction is entirely underground, primarily involving tunnel construction, it's crucial to consider not only the tunnel's structural strength but also the safety of above-ground structures. Therefore, subway tunnel construction is a key and challenging aspect of subway engineering. Common construction methods for subway tunnels include: cut-and-cover, cut-and-cover, tunneling with shield tunneling, and shield tunneling. Shield tunneling involves using a tunnel boring machine (TBM) to excavate a tunnel underground. It utilizes the support space created by the TBM to rapidly pour the tunnel lining ring, gradually advancing the tunnel depth to ensure that each section is completed and stabilized, thus improving construction efficiency and ensuring the required quality.

[0003] When using the shield tunneling method to construct subway tunnels, drainage pipes are often laid around the tunnel due to the underground excavation. Over time, these drainage pipes may develop cracks and breakage at joints. Furthermore, uneven ground settlement caused by tunnel construction may also damage the integrity of the drainage pipes, leading to drainage pipe leakage. This leakage reduces the stability of the surrounding rock of the tunnel and, in severe cases, may even cause accidents such as the collapse of the tunnel arch or the tunnel face. Therefore, this paper proposes a system and construction method for preventing leakage of drainage pipes above the tunnel during subway tunnel construction. Summary of the Invention

[0004] In view of this, the present invention aims to provide a system and construction method for preventing leakage of drainage pipes above subway tunnels, so as to solve or alleviate the technical problems existing in the prior art, and at least provide a beneficial alternative.

[0005] The technical solution of this invention is implemented as follows: a system for preventing leakage of drainage pipes above a subway tunnel during construction, comprising a sealing support assembly, wherein the sealing support assembly comprises a sealing ring, a through hole, two sealing rings, a glue discharge hole, two mounting grooves, sealing bolts, fixing bolts, a support rod, a water conveying belt, a connecting groove, and a glue injection hole;

[0006] Two mounting slots are symmetrically opened on both sides of the outer wall of the sealing ring. The inner walls of the two sealing rings are slidably connected to the inner walls of the two mounting slots. The sealing rings are fixedly connected to the sealing ring by fixing bolts. The through holes are symmetrically opened inside the sealing ring. The outer wall of the support rod is slidably connected to the inner wall of the through holes. The glue discharge holes are evenly opened on the outer wall of the sealing ring. The connecting slot is opened inside the sealing ring. The glue injection holes are symmetrically opened on one side of the sealing ring. The sealing bolt is threadedly connected to the inner wall of the glue injection hole. The water conveying belt is slidably connected to the inner wall of the sealing ring.

[0007] More preferably, the glue injection hole is connected to the connecting groove, the glue discharge hole is connected to the connecting groove, and the glue discharge hole is located between the two sealing rings.

[0008] More preferably, a main body assembly is installed on the outer wall of the sealing ring, the main body assembly including two drainage pipe bodies, two fixing rings and a pull ring;

[0009] The outer wall of the sealing ring is fitted to the inner wall of the main body of the drainage pipe.

[0010] More preferably, the outer walls of the two fixing rings are symmetrically fixedly connected to the inner walls of two far apart drainage pipe bodies, and the two ends of the support rod are symmetrically fixedly connected to the adjacent surfaces of the two fixing rings.

[0011] More preferably, the adjacent ends of two adjacent drainage pipe bodies are fitted together, and the position of the adhesive discharge hole corresponds to the position of the joint between the two adjacent drainage pipe bodies.

[0012] More preferably, the pull ring is fixedly connected to one end of the water conveying belt, the outer walls of the water conveying belt are fixedly connected to the inner walls of two fixing rings, the sealing ring is made of rubber, the outer diameter of the sealing ring is larger than the inner diameter of the main body of the drainage pipe, and the outer diameter of the sealing ring is smaller than the inner diameter of the main body of the drainage pipe.

[0013] In addition, the present invention also provides a construction method for a system to prevent leakage from overhead drainage pipes during subway tunnel construction, comprising the following steps:

[0014] Step 1: Workers enter the interior of the main body of the drainage pipe and install sealing rings at the joints of two adjacent drainage pipe bodies;

[0015] Step 2: Fit the two sealing rings onto the inner walls of the two mounting slots, and then use fixing bolts to fix the sealing rings and the sealing rings together. The outer wall of the sealing rings should fit against the inner wall of the main body of the drainage pipe.

[0016] Step 3: Adjust the position of the sealing ring, and then insert the support rod into the through hole;

[0017] Step 4: Fix both ends of the support rod to the adjacent surfaces of the two fixing rings, and then fix the fixing rings to the main body of the drainage pipe.

[0018] Step 5: Inject expanding sealant into the connecting groove through the injection hole. The expanding sealant flows into the space between the two sealing rings through the drain hole. The expanding sealant fills the joint between the two adjacent drainage pipe bodies. Then, use sealing bolts to seal the injection hole.

[0019] Step 6: Use a traction rope and fix one end of the traction rope to the pull ring, and fix the other end of the traction rope to the output shaft of the traction motor;

[0020] Step 7: Pull the traction rope with the traction motor, the traction rope pulls the pull ring, the pull ring pulls the water conveyor belt, and pulls the water conveyor belt to one end of the water inlet of the main body of the drainage pipe.

[0021] Step 8: Use adhesive to secure the water hose to the inner walls of the two retaining rings.

[0022] More preferably, in step five, the water conveying belt is a flexible water conveying belt, and the outer diameter of the water conveying belt is equal to the inner diameter of the sealing ring.

[0023] More preferably, in step three, the position of the sealing ring is adjusted so that the joint between two adjacent drainage pipe bodies is located between the two sealing rings.

[0024] More preferably, in step four, the support rod is made of alloy steel.

[0025] The present invention has the following advantages due to the adoption of the above technical solutions: The present invention defines the position of the sealing ring by a sealing ring, then inserts a support rod into the through hole, and injects expanding water-stopping adhesive into the connecting groove through the injection hole. The expanding water-stopping adhesive flows to the space between the two sealing rings through the discharge hole. At this time, the expanding water-stopping adhesive can seal the joint of the main body of the drainage pipe, thereby preventing water in the pipe from seeping through the joint. When uneven settlement of the stratum occurs, the support rod can support the main body of the drainage pipe, avoiding the situation of breakage and increased gaps at the joint of the main body of the drainage pipe, and leakage. By using the water conveying belt as a drainage pipe, the anti-leakage effect of the pipe can be enhanced.

[0026] The above overview is for illustrative purposes only and is not intended to be limiting in any way. In addition to the illustrative aspects, embodiments, and features described above, further aspects, embodiments, and features of the invention will become readily apparent from the accompanying drawings and the following detailed description. Attached Figure Description

[0027] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0028] Figure 1 This is a structural diagram of the present invention;

[0029] Figure 2 This is a structural diagram of the sealing support assembly of the present invention;

[0030] Figure 3 This is a schematic diagram showing the connection between the sealing ring and the plugging ring of the present invention;

[0031] Figure 4 This is a structural diagram of the sealing ring of the present invention.

[0032] Reference numerals: 101, sealing support assembly; 11, sealing ring; 12, through hole; 13, sealing ring; 14, glue drain hole; 15, mounting groove; 16, sealing bolt; 17, fixing bolt; 18, support rod; 19, water conveying belt; 20, connecting groove; 21, glue injection hole; 301, main body assembly; 31, main body of drainage pipe; 32, fixing ring; 33, pull ring. Detailed Implementation

[0033] In the following description, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments can be modified in various ways without departing from the spirit or scope of the invention. Therefore, the drawings and description are considered to be exemplary in nature and not restrictive.

[0034] The embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

[0035] like Figure 1-4 As shown, this embodiment of the invention provides a system for preventing leakage of drainage pipes above a subway tunnel during construction, including a sealing support assembly 101. The sealing support assembly 101 includes a sealing ring 11, a through hole 12, two sealing rings 13, a glue discharge hole 14, two mounting grooves 15, a sealing bolt 16, a fixing bolt 17, a support rod 18, a water conveying belt 19, a connecting groove 20, and a glue injection hole 21.

[0036] Two mounting grooves 15 are symmetrically opened on both sides of the outer wall of the sealing ring 11. The inner walls of the two sealing rings 13 are slidably connected to the inner walls of the two mounting grooves 15. The sealing rings 13 are fixedly connected to the sealing ring 11 by fixing bolts 17. Through holes 12 are symmetrically opened inside the sealing ring 11. The outer wall of the support rod 18 is slidably connected to the inner wall of the through hole 12. The glue discharge holes 14 are evenly opened on the outer wall of the sealing ring 11. The connecting groove 20 is opened inside the sealing ring 11. The glue injection hole 21 is symmetrically opened on one side of the sealing ring 11. The sealing bolt 16 is threadedly connected to the inner wall of the glue injection hole 21. The water conveying belt 19 is slidably connected to the inner wall of the sealing ring 11.

[0037] In one embodiment, the injection hole 21 is connected to the connecting groove 20, and the discharge hole 14 is connected to the connecting groove 20. The discharge hole 14 is located between the two sealing rings 13. Expanding sealant can be injected into the connecting groove 20 through the injection hole 21, and then the expanding sealant flows through the discharge hole 14 to the space between the two sealing rings 13. The expanding sealant can then be used to seal the joint of the drainage pipe body 31 to prevent pipe leakage.

[0038] In one embodiment, a main body assembly 301 is mounted on the outer wall of the sealing ring 13. The main body assembly 301 includes two drain pipe bodies 31, two retaining rings 32, and a pull ring 33.

[0039] The outer wall of the sealing ring 13 is attached to the inner wall of the drainage pipe body 31. The outer walls of the two fixing rings 32 are symmetrically fixed to the inner walls of the two drainage pipe bodies 31 that are far apart. The two ends of the support rod 18 are symmetrically fixed to the adjacent surfaces of the two fixing rings 32. Thus, multiple sealing rings 11 can be connected into a whole through the support rod 18. Since the position of the sealing ring 11 is fixed, the support rod 18 can play a supporting role. When uneven settlement of the stratum occurs, the support rod 18 can support the drainage pipe body 31 and prevent the joints of the drainage pipe body 31 from breaking, the gaps from widening, and leakage.

[0040] In one embodiment, the adjacent ends of two adjacent drainage pipe bodies 31 are fitted together, and the position of the glue drain hole 14 corresponds to the position of the joint of the two adjacent drainage pipe bodies 31. Thus, the expanding sealant flowing out through the glue drain hole 14 can seal the joint of the drainage pipe body 31.

[0041] In one embodiment, the pull ring 33 is fixedly connected to one end of the water conveying belt 19, and the outer walls of the water conveying belt 19 are fixedly connected to the inner walls of two fixing rings 32. The sealing ring 13 is made of rubber, and the outer diameter of the sealing ring 13 is larger than the inner diameter of the drainage pipe body 31. The outer diameter of the sealing ring 11 is smaller than the inner diameter of the drainage pipe body 31. Thus, the sealing ring 13 can limit the position of the sealing ring 11, and the sealing ring 13 can prevent water leakage in the pipe.

[0042] In addition, the present invention also provides a construction method for a system to prevent leakage from overhead drainage pipes during subway tunnel construction, comprising the following steps:

[0043] Step 1: Workers enter the interior of the main body 31 of the drainage pipe and install the sealing ring 11 at the joint between two adjacent main bodies 31 of the drainage pipe.

[0044] Step 2: Fit the two sealing rings 13 onto the inner sidewalls of the two mounting grooves 15, and then use fixing bolts 17 to fix the sealing rings 13 and the sealing rings 11 in place. The outer sidewall of the sealing rings 13 is attached to the inner sidewall of the drainage pipe body 31.

[0045] Step 3: Adjust the position of the sealing ring 11, and then insert the support rod 18 into the through hole 12;

[0046] Step 4: Fix both ends of the support rod 18 to the adjacent surfaces of the two fixing rings 32, and then fix the fixing rings 32 to the main body of the drainage pipe 31.

[0047] Step 5: Inject expansion sealant into the connecting groove 20 through the injection hole 21. The expansion sealant flows into the space between the two sealing rings 13 through the discharge hole 14. The expansion sealant fills the joint between the two adjacent drainage pipe bodies 31. Then, use the sealing bolt 16 to seal the injection hole 21.

[0048] Step 6: Use a traction rope and fix one end of the traction rope to the pull ring 33, and fix the other end of the traction rope to the output shaft of the traction motor;

[0049] Step 7: Pull the traction rope by the traction motor, the traction rope pulls the pull ring 33, the pull ring 33 pulls the water conveying belt 19, and pulls the water conveying belt 19 to one end of the water inlet of the main body of the drainage pipe 31.

[0050] Step 8: Use adhesive to secure the water hose 19 to the inner wall of the two retaining rings 32.

[0051] In one embodiment, in step five, the water conveying belt 19 is a flexible water conveying belt, and the outer diameter of the water conveying belt 19 is equal to the inner diameter of the sealing ring 11. Using the water conveying belt 19 as a drainage pipe can enhance the anti-leakage effect of the pipeline.

[0052] In one embodiment, in step three, the position of the sealing ring 11 is adjusted so that the joint between two adjacent drainage pipe bodies 31 is located between the two sealing rings 13. In step four, the support rod 18 is made of alloy steel. The support rod 18 can enhance the overall rigidity of the drainage pipe body 31 and reduce the impact of ground subsidence on the drainage pipe body 31.

[0053] In operation, the present invention is as follows: Workers enter the interior of the drainage pipe body 31 and install sealing rings 11 at the joint between two adjacent drainage pipe bodies 31. Two sealing rings 13 are fitted onto the inner walls of two mounting grooves 15. Then, fixing bolts 17 are used to secure the sealing rings 13 and sealing rings 11. The outer walls of the sealing rings 13 are fitted against the inner walls of the drainage pipe body 31. The position of the sealing rings 11 is adjusted. Then, a support rod 18 is inserted into the through hole 12, and both ends of the support rod 18 are fixedly connected to the adjacent surfaces of two fixing rings 32. The fixing rings 32 are then fixedly connected to the drainage pipe body 31. Expanding sealant is injected into the connecting groove 20 through the injection hole 21. The expanding sealant flows through the discharge hole 14 into the space between the two sealing rings 13, filling the joint between the two adjacent drainage pipe bodies 31. Finally, a sealing bolt is used to seal the joint. The sealing bolt 16 seals the injection hole 21. A traction rope is used, with one end fixedly connected to the pull ring 33 and the other end fixedly connected to the output shaft of the traction motor. The traction motor pulls the traction rope, which in turn pulls the pull ring 33, which in turn pulls the water conveyor belt 19, pulling the water conveyor belt 19 to one end of the inlet of the main body of the drainage pipe 31. Adhesive is used to fix the water conveyor belt 19 to the inner wall of the two fixing rings 32. At this point, the construction is complete. The joint of the main body of the drainage pipe 31 is sealed with expanding water-stopping glue to prevent water from seeping through the joint. When uneven settlement of the stratum occurs, the support rod 18 can support the main body of the drainage pipe 31 to prevent the joint of the main body of the drainage pipe 31 from breaking, the gap from widening, and leakage. By using the water conveyor belt 19 as a drainage pipe, the anti-leakage effect of the pipe can be enhanced.

[0054] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any person skilled in the art can easily conceive of various variations or substitutions within the technical scope disclosed in the present invention, and these should all be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A system for preventing leakage from overhead drainage pipes during subway tunnel construction, comprising a sealing support assembly (101), characterized in that: The sealing support assembly (101) includes a sealing ring (11), a through hole (12), two sealing rings (13), a glue discharge hole (14), two mounting grooves (15), a sealing bolt (16), a fixing bolt (17), a support rod (18), a water conveying belt (19), a connecting groove (20), and a glue injection hole (21). Two mounting grooves (15) are symmetrically opened on both sides of the outer wall of the sealing ring (11). The inner walls of the two sealing rings (13) are slidably connected to the inner walls of the two mounting grooves (15). The sealing rings (13) are fixedly connected to the sealing ring (11) by fixing bolts (17). The through holes (12) are symmetrically opened inside the sealing ring (11). The outer wall of the support rod (18) is slidably connected to the inner wall of the through hole (12). The glue discharge holes (14) are evenly opened on the outer wall of the sealing ring (11). The connecting groove (20) is opened inside the sealing ring (11). The glue injection holes (21) are symmetrically opened on one side of the sealing ring (11). The sealing bolts (16) are threadedly connected to the inner wall of the glue injection holes (21). The water conveying belt (19) is slidably connected to the inner wall of the sealing ring (11). The glue injection hole (21) is connected to the connecting groove (20), the glue discharge hole (14) is connected to the connecting groove (20), and the glue discharge hole (14) is located between the two sealing rings (13); The outer wall of the sealing ring (13) is fitted with a main body assembly (301), which includes two drain pipe bodies (31), two fixing rings (32) and a pull ring (33). The outer wall of the sealing ring (13) is attached to the inner wall of the drainage pipe body (31); The outer walls of the two fixed rings (32) are symmetrically fixed to the inner walls of the two drainage pipe bodies (31) that are far apart, and the two ends of the support rod (18) are symmetrically fixed to the adjacent surfaces of the two fixed rings (32); The adjacent ends of two adjacent drainage pipe bodies (31) are fitted together, and the position of the glue discharge hole (14) corresponds to the position of the joint of the two adjacent drainage pipe bodies (31).

2. A system for preventing leakage from overhead drainage pipes during subway tunnel construction according to claim 1, characterized in that: The pull ring (33) is fixedly connected to one end of the water conveying belt (19). The outer walls of the water conveying belt (19) are fixedly connected to the inner walls of two fixing rings (32). The sealing ring (13) is made of rubber. The outer diameter of the sealing ring (13) is larger than the inner diameter of the main body of the drainage pipe (31). The outer diameter of the sealing ring (11) is smaller than the inner diameter of the main body of the drainage pipe (31).

3. A construction method for a system to prevent leakage from overhead drainage pipes during subway tunnel construction, as described in any one of claims 1-2, characterized in that, Includes the following steps: Step 1: The staff enters the interior of the main body of the drainage pipe (31) and installs the sealing ring (11) at the joint of two adjacent main bodies of the drainage pipe (31); Step 2: Fit the two sealing rings (13) onto the inner sidewalls of the two mounting grooves (15), and then use fixing bolts (17) to fix the sealing rings (13) and the sealing rings (11) in place. The outer sidewall of the sealing rings (13) is attached to the inner sidewall of the main body of the drainage pipe (31). Step 3: Adjust the position of the sealing ring (11), and then insert the support rod (18) into the through hole (12); Step 4: Fix both ends of the support rod (18) to the adjacent surfaces of the two fixing rings (32), and then fix the fixing rings (32) to the main body of the drainage pipe (31); Step 5: Inject expansion sealant into the connecting groove (20) through the injection hole (21). The expansion sealant flows into the space between the two sealing rings (13) through the discharge hole (14). The expansion sealant fills the joint between the two adjacent drainage pipe bodies (31). Then, use the sealing bolt (16) to seal the injection hole (21). Step 6: Use a traction rope and fix one end of the traction rope to the pull ring (33), and fix the other end of the traction rope to the output shaft of the traction motor; Step 7: Pull the traction rope by the traction motor, the traction rope pulls the pull ring (33), the pull ring (33) pulls the water conveying belt (19), and pulls the water conveying belt (19) to one end of the inlet of the main body of the drainage pipe (31); Step 8: Use adhesive to fix the water hose (19) to the inner wall of the two fixing rings (32).

4. The construction method for a subway tunnel construction system to prevent leakage from overhead drainage pipes according to claim 3, characterized in that: In step five, the water conveying belt (19) is a flexible water conveying belt, and the outer diameter of the water conveying belt (19) is equal to the inner diameter of the sealing ring (11).

5. A construction method for a system to prevent leakage from overhead drainage pipes during subway tunnel construction, as described in claim 3, characterized in that: In step three, the position of the sealing ring (11) is adjusted so that the joint of the two adjacent drainage pipe bodies (31) is located between the two sealing rings (13).

6. The construction method for a subway tunnel construction system to prevent leakage from overhead drainage pipes according to claim 3, characterized in that: In step four, the support rod (18) is made of alloy steel.

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