Tunnel vault water leakage external diversion device

Abstract

The utility model discloses a tunnel vault leakage water outer -mounted type lead -off device, including water receiving tank, and water receiving tank top has seted up multiple groups of through -hole, and its water receiving tank one end is provided with the drain pipe, and the drain pipe one end is connected with outside drainage system, multiple groups of flow guide unit, every flow guide unit all includes the flow guide pipe of one end wear in the corresponding through -hole, and the other end is inserted in the tunnel wall, wherein, every flow guide pipe is arrayed and is seted up with multiple leak grooves, and every leak groove place is provided with the second filter board, and multiple groups of flow guide pipe are used for guiding the tunnel leakage to the water receiving tank, can intercept the sandstone etc. Particle material with the second filter board in flow guide unit can enter the flow guide pipe with the leakage water, make sandstone unable to pass through leak groove and enter the flow guide pipe inside, and then avoid its being carried into water receiving tank by water flow, prevent sandstone finally from being carried out tunnel by water flow, effectively avoid the empty shell phenomenon of tunnel wall because of sandstone loss, guarantee tunnel structure stability.

Description

Technical Field

[0001] This utility model relates to the field of tunnel engineering seepage control technology, specifically to an external drainage device for seepage in tunnel arches. Background Technology

[0002] Water leakage in the tunnel arch is a common problem in tunnel engineering and needs to be repaired to prevent traffic accidents.

[0003] For example, CN221742708U discloses an externally mounted drainage device for water leakage in tunnel arches. This device includes a water receiving trough, which comprises a trough body positioned below the leakage point in the tunnel arch. The trough body has a gap with the tunnel arch lining structure and is fixedly connected to it. The lower part of the trough body is connected to a water outlet pipe, which is fixedly connected to a drainage pipe. The drainage pipe extends downwards along the inner surface of the tunnel lining structure to a corner and connects to the tunnel drainage system. This externally mounted device collects the leakage water, preventing damage to the tunnel structure.

[0004] However, due to the scouring force of the water flow during the drainage process, prolonged scouring will carry away sand and gravel particles near the tunnel arch, causing a hollow shell to gradually form inside the tunnel wall. The appearance of this hollow shell will severely weaken the load-bearing capacity of the tunnel wall, reduce the stability and safety of the tunnel structure, and increase the risk of tunnel collapses and other accidents. Utility Model Content

[0005] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide an external drainage device for tunnel arch seepage, so as to solve the problem that seepage water will carry away sand and gravel and other particulate matter near the tunnel arch during the drainage process.

[0006] According to an embodiment of this utility model, an external drainage device for tunnel arch leakage includes a water receiving tank with multiple sets of through holes on the top of the water receiving tank. A drain pipe is provided at one end of the water receiving tank, and one end of the drain pipe is connected to an external drainage system. Multiple sets of flow guiding units are also included. Each flow guiding unit includes a flow guiding pipe with one end inserted into the corresponding through hole and the other end inserted into the tunnel wall. Multiple leakage grooves are arrayed on each flow guiding pipe, and a second filter plate is provided at each leakage groove. The multiple sets of flow guiding pipes are used to guide tunnel leakage water into the water receiving tank.

[0007] Compared to existing technologies, this invention offers the following advantages: by arranging the flow guide pipe of the flow guide unit at the seepage point, the second filter plate in the flow guide unit can intercept particulate matter such as sand and gravel that enters the flow guide pipe with the seepage water. This prevents the sand and gravel from entering the interior of the flow guide pipe through the trough, thus avoiding them being carried into the water receiving tank by the water flow. Ultimately, this prevents the sand and gravel from being carried out of the tunnel by the water flow, effectively avoiding the formation of hollow shells in the tunnel wall due to sand and gravel loss, and ensuring the stability of the tunnel structure.

[0008] Preferably, the top of the water tank is evenly distributed with multiple sets of rectangular channels, and each rectangular channel is provided with a first filter plate.

[0009] Preferably, the top of the water tank is arc-shaped.

[0010] Preferably, a sealing ring is provided on the top periphery of the water tank.

[0011] Preferably, each of the four corners of the top of the water tank is fixedly provided with a support lug, and each support lug is provided with an installation hole.

[0012] Preferably, each guide pipe is fixedly provided with at least one set of barbs, the barbs are in the shape of a trumpet, and the opening of the trumpet faces the water receiving tank.

[0013] Preferably, the barbs are made of an elastic material.

[0014] Preferably, the guide tube is filled with gravel. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of an embodiment of the present utility model.

[0016] Figure 2 This is an exploded structural diagram of an embodiment of the present invention.

[0017] Figure 3 This is a three-dimensional structural diagram of the flow guiding unit in an embodiment of this utility model.

[0018] Figure 4 This is a front view of the flow guiding unit in an embodiment of this utility model.

[0019] The reference numerals in the accompanying drawings of the instruction manual include: 1. Water receiving tank; 11. Rectangular through groove; 12. First filter plate; 13. Through hole; 14. Sealing ring; 15. Support lug; 151. Mounting hole; 2. Guide pipe; 21. Leakage groove; 22. Barb; 23. Second filter plate; 3. Drain pipe. Detailed Implementation

[0020] The technical solution of this utility model will be further described below with reference to the accompanying drawings and embodiments.

[0021] like Figures 1 to 4As shown in the figure, this utility model embodiment proposes an external drainage device for tunnel arch leakage, which includes a water receiving tank 1, with multiple sets of through holes 13 on the top of the water receiving tank 1, and a drain pipe 3 is provided at one end of the water receiving tank 1, with one end of the drain pipe 3 connected to an external drainage system; multiple sets of diversion units, each diversion unit including a diversion pipe 2 with one end inserted into the corresponding through hole 13 and the other end inserted into the tunnel wall, wherein multiple leakage grooves 21 are arrayed on each diversion pipe 2, and a second filter plate 23 is provided at each leakage groove 21, and the multiple sets of diversion pipes 2 are used to divert tunnel leakage water into the water receiving tank 1.

[0022] The detailed working process of this embodiment is as follows: Multiple perforated grooves 21 are arrayed on the perforation pipe 2 of each group of perforation units, and a second filter plate 23 is provided at each perforated groove 21. The second filter plate 23 can intercept particulate matter such as sand and gravel that enter the perforation pipe 2 with the seepage water, so that the sand and gravel cannot enter the interior of the perforation pipe 2 through the perforated grooves 21, thereby preventing them from being carried into the water receiving tank 1 by the water flow, and ultimately preventing the sand and gravel from being carried out of the tunnel by the water flow. This effectively avoids the phenomenon of hollow shells in the tunnel wall due to the loss of sand and gravel, and ensures the stability of the tunnel structure.

[0023] Multiple diversion units are distributed to collect seepage water from the tunnel arch over a large area. Diversion pipe 2 leads the water into receiving tank 1, which then discharges it through drainage pipe 3. While effectively intercepting sand and gravel, it does not obstruct the normal flow of water, ensuring that seepage water can be discharged in a timely manner and preventing water accumulation from damaging the tunnel structure. Moreover, the drainage process is not affected by sand and gravel, reducing drainage problems caused by sand and gravel clogging the pipes, ensuring the long-term stable operation of the drainage system, and reducing maintenance costs and safety hazards.

[0024] like Figure 2 As shown, multiple sets of rectangular channels 11 are evenly distributed on the top of the water tank 1, and a first filter plate 12 is provided at each rectangular channel 11.

[0025] The detailed working process of this embodiment is as follows: The water receiving tank 1 is fastened to the leaking area in the tunnel arch, surrounding the leak. However, a small portion of the water flow bypasses the diversion pipe 2 and directly seeps out of the tunnel arch into the water receiving tank 1. Multiple sets of first filter plates 12 abut against the tunnel arch, forming a protective measure to intercept sand and gravel, preventing sand and gravel from being directly washed into the water receiving tank 1 during the leakage process. This strengthens the prevention and control of sand and gravel loss and ensures the safety of the tunnel structure.

[0026] like Figure 2 As shown, the top of water tank 1 is arc-shaped.

[0027] The detailed working process of this embodiment is as follows: The tunnel arch is usually an arc or arch structure. The top of the water tank 1 adopts an arc design, which can fit seamlessly with the curved surface of the tunnel arch, reduce the installation gap, and avoid the leakage problem caused by the mismatch of shapes.

[0028] like Figure 2 As shown, a sealing ring 14 is provided on the top periphery of the water tank 1.

[0029] The detailed working process of this embodiment is as follows: With the sealing ring 14 installed, it is located on the top periphery of the water receiving tank 1, forming a tight elastic barrier between the water receiving tank 1 and the tunnel arch or other connecting components. When the water receiving tank 1 is installed on the tunnel arch, the sealing ring 14 is compressed and deformed, filling the tiny gaps between the top of the water receiving tank 1 and the mounting surface, preventing leaking water from bypassing the periphery gaps. Even if the tunnel undergoes slight displacement or deformation due to geological activity, temperature changes, or other factors, the elasticity of the sealing ring 14 allows it to adaptively adjust and maintain a sealed state, ensuring that leaking water can only enter through the through hole 13 or rectangular through groove 11 at the top of the water receiving tank 1, and is then effectively drained, greatly improving the overall waterproof reliability of the drainage device.

[0030] Leaking water generates impact force as it flows into receiving tank 1, especially at high flow rates, which can cause vibration in the tank. Sealing ring 14, with its excellent elasticity and cushioning properties, absorbs and buffers the vibration energy generated by the water flow impact, reducing wear between the receiving tank 1 and the tunnel arch caused by vibration friction. This not only protects the structural integrity of the receiving tank 1 and the tunnel arch but also reduces the risk of loosening of connecting parts due to vibration, preventing seal failure caused by loose parts, thereby extending the service life of the drainage device and ensuring its long-term stable operation.

[0031] like Figure 2 As shown, each of the four corners of the top of the water tank 1 is fixedly provided with a support lug 15, and each support lug 15 is provided with an installation hole 151.

[0032] The detailed working process of this embodiment is as follows: The lugs 15 are set at the four corners of the top of the water receiving tank 1, forming a stable four-point support structure. By inserting bolts, threaded rods and other connecting parts through the mounting holes 151, the water receiving tank 1 can be firmly fixed to the preset installation position on the tunnel arch. This ensures that its top is in close contact with the curved surface of the tunnel arch.

[0033] like Figure 3 As shown, each guide pipe 2 is fixedly provided with at least one set of barbs 22, the barbs 22 are in the shape of a horn, and the opening of the horn faces the water receiving tank 1.

[0034] like Figure 3 As shown, the barbs 22 are made of elastic material.

[0035] The detailed working process of this embodiment is as follows: The barbs 22 are funnel-shaped with their openings facing the water tank 1. When the diversion pipe 2 is inserted into the tunnel wall, the barbs 22 undergo elastic deformation under the pressure of the tunnel wall, tightly "hooking" the rock or concrete inside the tunnel wall. This structure allows the diversion pipe 2 to obtain greater friction and gripping force inside the tunnel wall. Even under long-term scouring by seepage water, tunnel vibration, and other external forces, it is difficult to pull out or shift from the tunnel wall, ensuring the stable installation of the diversion pipe 2, maintaining the normal working state of the drainage device, and preventing the failure of seepage water drainage due to loosening of the diversion pipe 2.

[0036] like Figure 1 As shown, the guide pipe 2 is filled with gravel.

[0037] The detailed working process of this embodiment is as follows: Filling the inside of the guide pipe 2 with crushed stone not only improves the compressive strength of the guide pipe 2, but also disperses and absorbs the energy of the water flow, acting as a buffer. This not only reduces the scouring and wear of the water flow on the inner wall of the guide pipe 2, extending its service life, but also reduces the impact of the water flow on the connecting water tank 1 and other connecting components, preventing the device from loosening or being damaged due to excessive water flow impact, thus ensuring the stable operation of the drainage system.

[0038] The implementation principle of this application embodiment is as follows: First, as needed, multiple sets of holes for installing the diversion pipe 2 are drilled at the seepage point on the tunnel arch. Then, the diversion pipe 2 is inserted into the hole. Next, the water receiving tank 1 is installed. During installation, the diversion pipe 2 is aligned with the through hole 13 on the water receiving tank 1. Then, by inserting bolts, screws and other connecting parts through the installation hole 151, the water receiving tank 1 can be firmly fixed in the preset installation position on the tunnel arch. Then, the drain pipe 3 on the water receiving tank 1 is introduced into the tunnel's drainage system, thus realizing the drainage of leaking water from the tunnel.

[0039] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the spirit and scope of the technical solutions of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A tunnel vault water leakage external type guiding and draining device, characterized in that, include: A water receiving tank (1) is provided with multiple sets of through holes (13) on the top of the water receiving tank (1). A drain pipe (3) is provided at one end of the water receiving tank (1), and one end of the drain pipe (3) is connected to an external drainage system. Multiple sets of diversion units, each of the diversion units includes a diversion pipe (2) with one end inserted into the corresponding through hole (13) and the other end inserted into the tunnel wall. Each diversion pipe (2) has multiple leakage grooves (21) arranged in an array, and each leakage groove (21) is provided with a second filter plate (23). The multiple sets of diversion pipes (2) are used to divert tunnel water leakage into the water receiving tank (1).

2. A tunnel vault water leakage external guide and drainage device according to claim 1, characterized in that: The top of the water receiving tank (1) is evenly distributed with multiple sets of rectangular through slots (11), and each of the rectangular through slots (11) is provided with a first filter plate (12).

3. A tunnel vault water leakage external guide and drainage device according to claim 1, characterized in that: The top of the water receiving tank (1) is arc-shaped.

4. A tunnel vault water leakage external guide and drain device according to claim 3, characterized in that: A sealing ring (14) is provided on the top periphery of the water receiving tank (1).

5. A tunnel vault water leakage external guide and drain device according to claim 4, characterized in that: Each of the four corners of the top of the water receiving tank (1) is fixedly provided with a support lug (15), and each of the support lugs (15) is provided with an installation hole (151).

6. A tunnel vault water leakage external guide and drain device according to claim 1, characterized in that: Each of the aforementioned guide tubes (2) is fixedly provided with at least one set of barbs (22), the barbs (22) being horn-shaped with the horn opening facing the water receiving tank (1).

7. A tunnel vault water leakage external guide and drain device according to claim 6, characterized in that: The barbs (22) are made of elastic material.

8. The external drainage device for tunnel arch leakage according to claim 7, characterized in that: The guide pipe (2) is filled with gravel.

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