Waterproof sealing and supporting structure for subway tunnel

Abstract

This utility model relates to the field of tunnel waterproofing technology, and provides a waterproof sealing support structure for subway tunnels, including: a corrosion-resistant layer, a water-permeable layer on the inner side of the corrosion-resistant layer, a reinforcing support layer on one side of the water-permeable layer, a track subgrade at the bottom of the reinforcing support layer, drainage ditches fixedly connected to both sides of the track subgrade, filter plates inserted above the interior of each drainage ditch, and a quick-release assembly for fixing the filter plates on one side above the filter plates; the corrosion-resistant layer of the subway tunnel waterproof sealing support structure of this utility model is composed of epoxy resin coating, which can effectively prevent these substances from eroding the lining, while the reinforcing support layer is composed of cast-in-place concrete, which has good integrity and waterproof performance and can withstand greater surrounding rock pressure. When water accumulates in the tunnel, the water enters the connecting channel through the water-permeable plug, then enters the water-permeable layer, and finally enters the drainage channel from the bottom of the water-permeable layer.

Description

Technical Field

[0001] This utility model relates to the field of tunnel waterproofing technology, and in particular to a waterproof sealing support structure for subway tunnels. Background Technology

[0002] Tunnels are engineering structures buried in the earth's strata, representing a form of human utilization of underground space. Tunnels can be categorized into traffic tunnels, hydraulic tunnels, mining tunnels, military tunnels, etc. During tunnel construction, waterproof structures are typically installed to reduce the impact of rainwater on the tunnel, thereby improving its service life and stability during use.

[0003] Currently, poor drainage can cause tunnel linings to be in a damp environment for extended periods, or even come into direct contact with stagnant water. Harmful substances in the water, such as sulfates and chlorides, can react chemically with the cement components in the lining concrete, leading to erosion of the concrete structure, reduced strength, and consequently affecting the overall stability and service life of the tunnel. Therefore, we offer waterproof and sealing support structures for subway tunnels. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] To address the shortcomings of existing technologies, this utility model provides a waterproof and sealing support structure for subway tunnels, solving the problem that poor drainage can cause tunnel linings to be in a damp environment for extended periods, or even directly contact with stagnant water. Harmful substances in water, such as sulfates and chlorides, can chemically react with the cement components in the lining concrete, leading to erosion of the concrete structure, reduced strength, and consequently affecting the overall stability and service life of the tunnel.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, this utility model provides the following technical solution:

[0008] A waterproof sealing support structure for subway tunnels includes a corrosion-resistant layer, an infiltration layer on the inner side of the corrosion-resistant layer, a reinforcing support layer on one side of the infiltration layer, a track subgrade at the bottom of the reinforcing support layer, drainage ditches fixedly connected to both sides of the track subgrade, filter plates inserted above the interior of each drainage ditch, and a quick-release assembly for fixing the filter plates on one side of each filter plate.

[0009] Preferably, the surface of the corrosion-resistant layer is embedded with a plurality of water-permeable plugs, and the bottom side of each water-permeable plug has a connecting channel.

[0010] Preferably, a plurality of seepage plugs are embedded above the surface of the drainage ditch, and a connecting channel is provided at the bottom of the seepage plugs, the bottom of which is connected to the drainage channel.

[0011] Preferably, the middle part of the drainage channel is inclined to both sides, and both ends of the drainage channel are connected to the drainage ditch.

[0012] Preferably, the quick-release assembly includes a positioning rod, a connecting plate, a telescopic rod, and a restoring spring. The positioning rod is inserted above one side of the drainage ditch, and the connecting plate is fixedly connected to the lower side of one side of the positioning rod. A restoring spring is fixedly connected between the connecting plate and the drainage ditch, and a telescopic rod is provided in the middle of the restoring spring.

[0013] Preferably, the quick-release assembly further includes a reinforcing rod, a limiting plate, and a spring. The reinforcing rod is inserted into the top side of the drainage ditch, the limiting plate is fixedly connected to the outside of the reinforcing rod, and a spring is fixedly connected between the limiting plate and the drainage ditch.

[0014] Preferably, the two ends of the telescopic rod are welded to the drainage ditch and the connecting plate, respectively.

[0015] (III) Beneficial Effects

[0016] Compared with the prior art, the beneficial effects of this utility model are:

[0017] 1. This utility model comprises a corrosion-resistant layer, a water-permeable layer, a reinforcing support layer, a track subgrade, a first water-permeable plug, a first connecting channel, a second water-permeable plug, a second connecting channel, and a drainage channel. The corrosion-resistant layer is composed of epoxy resin coating, which can effectively prevent these substances from eroding the lining. At the same time, the reinforcing support layer is composed of cast-in-place concrete, which has good integrity and waterproof performance and can withstand greater surrounding rock pressure. When water accumulates in the tunnel, the water enters the first connecting channel through the first water-permeable plug and then enters the water-permeable layer. Finally, it enters the drainage channel from the bottom of the water-permeable layer and then enters the drainage ditch. Meanwhile, water on the surface of the track subgrade enters the second connecting channel through the second water-permeable plug and then enters the drainage ditch through the drainage channel. The water entering the drainage ditch is filtered by a filter plate to prevent the drainage ditch from becoming blocked.

[0018] 2. This utility model features a quick-release assembly. By pulling the reinforcing rod upwards until its bottom end disengages from the positioning rod, the limiting plate compresses the first spring. Then, by pulling the positioning rod again until one end of the positioning rod disengages from the filter plate, the filter plate can be removed for cleaning. Simultaneously, the telescopic rod improves the stability of the positioning rod during use. Similarly, the positioning rod, under the restoring force of the spring, can fix the filter plate. The reinforcing rod, under the restoring force of the first spring, can enter the interior of the positioning rod, thereby enhancing the fixing effect on the filter plate. Attached Figure Description

[0019] The above description is only an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model and to implement it in accordance with the contents of the specification, the following describes the preferred examples of this utility model in detail with reference to the accompanying drawings.

[0020] Figure 1 This is a cross-sectional structural diagram of an embodiment of the present utility model;

[0021] Figure 2 As described in the embodiments of this utility model Figure 1 Enlarged structural diagram at point A;

[0022] Figure 3 As an embodiment of this utility model Figure 2 Enlarged structural diagram at point B;

[0023] Legend: 100 Corrosion-resistant layer; 101 Water-permeable layer; 102 Reinforced support layer; 103 Track subgrade; 21 Water-permeable plug one; 22 Connecting channel one; 23 Water-permeable plug two; 24 Connecting channel two; 25 Drainage channel; 36 Drainage ditch; 31 Filter plate; 32 Quick-release assembly; 321 Positioning rod; 322 Connecting plate; 323 Telescopic rod; 324 Resilience spring; 325 Reinforcing rod; 326 Limiting plate; 327 Spring one. Detailed Implementation

[0024] Example 1

[0025] The technical solution in this application aims to effectively address the problem of poor drainage causing tunnel linings to remain in a damp environment for extended periods, or even directly contacting stagnant water. Harmful substances in the water, such as sulfates and chlorides, can chemically react with the cement components in the lining concrete, leading to erosion of the concrete structure, reduced strength, and consequently affecting the overall stability and service life of the tunnel. The general approach is as follows:

[0026] like Figures 1 to 3To address the problems existing in the prior art, this utility model provides a waterproof sealing support structure for subway tunnels, including a corrosion-resistant layer 100, a water-permeable layer 101 on the inner side of the corrosion-resistant layer 100, a reinforcing support layer 102 on one side of the water-permeable layer 101, a track subgrade 103 at the bottom of the reinforcing support layer 102, drainage channels 3 fixedly connected to both sides of the track subgrade 103, filter plates 31 inserted into the upper part of the drainage channels 3, quick-release assembly 32 for fixing the filter plates 31 on one side of the filter plates 31, multiple water-permeable plugs 21 embedded on the surface of the corrosion-resistant layer 100, a connecting channel 22 at the bottom of the water-permeable plugs 21, multiple water-permeable plugs 23 embedded on the upper part of the surface of the drainage channels 3, a connecting channel 24 at the bottom of the water-permeable plugs 23, a drainage channel 25 connected through the bottom of the connecting channel 24, the middle part of the drainage channel 25 inclined to both sides, and both ends of the drainage channel 25 connected through the drainage channel 3.

[0027] By adopting the above technical solution, the corrosion-resistant layer 100 is composed of epoxy resin coating, which has excellent adhesion and can firmly adhere to the surface of the tunnel lining. It has strong chemical corrosion resistance and good resistance to acids, alkalis, salts, etc., which can effectively prevent these substances from eroding the lining. At the same time, the reinforcement and support layer 102 is composed of cast-in-place concrete, which has good integrity and waterproof performance and can withstand greater surrounding rock pressure. It is an important component of tunnel reinforcement and support and is often used for permanent tunnel support. When water accumulates in the tunnel, the water enters the seepage layer 101 through the seepage plug 21, enters the connecting channel 22, and finally enters the drainage channel 25 from the bottom of the seepage layer 101. It then enters the drainage ditch 3 from the drainage channel 25. Meanwhile, water on the surface of the track subgrade 103 enters the connecting channel 24 through the seepage plug 23 and enters the drainage ditch 3 through the drainage channel 25. The water entering the drainage ditch 3 is filtered by the filter plate 31 to prevent the drainage ditch 3 from becoming blocked.

[0028] Example 2

[0029] like Figures 1 to 3 The quick-release assembly 32 includes a positioning rod 321, a connecting plate 322, a telescopic rod 323, and a restoring spring 324. The positioning rod 321 is inserted above one side of the drainage ditch 3. The connecting plate 322 is fixedly connected to the lower side of the positioning rod 321. The restoring spring 324 is fixedly connected between the connecting plate 322 and the drainage ditch 3. The telescopic rod 323 is provided in the middle of the restoring spring 324. The quick-release assembly 32 also includes a reinforcing rod 325, a limiting piece 326, and a spring 327. The reinforcing rod 325 is inserted on the top side of the drainage ditch 3. The limiting piece 326 is fixedly connected to the outside of the reinforcing rod 325. The spring 327 is fixedly connected between the limiting piece 326 and the drainage ditch 3. The two ends of the telescopic rod 323 are welded to the drainage ditch 3 and the connecting plate 322, respectively.

[0030] By adopting the above technical solution, when cleaning impurities on one side of the filter plate 31, firstly, pull the reinforcing rod 325 upwards until the bottom end of the reinforcing rod 325 disengages from the positioning rod 321. At this time, the limiting piece 326 compresses the spring 327. Then, pull the positioning rod 321 until one end of the positioning rod 321 disengages from the interior of the filter plate 31, so that the filter plate 31 can be taken out for cleaning. At the same time, the telescopic rod 323 can improve the stability of the positioning rod 321 during use. Similarly, the positioning rod 321 can fix the filter plate 31 under the restoring force of the restoring spring 324, and the reinforcing rod 325 can enter the interior of the positioning rod 321 under the restoring force of the spring 327, thereby strengthening the fixing effect on the filter plate 31.

[0031] Working principle: First, the corrosion-resistant layer 100 is composed of epoxy resin coating, which has excellent adhesion and can firmly adhere to the tunnel lining surface. It has strong chemical corrosion resistance and good resistance to acids, alkalis, and salts, effectively preventing these substances from eroding the lining. Simultaneously, the reinforcing support layer 102 is composed of cast-in-place concrete, which has good integrity and waterproof performance, and can withstand significant surrounding rock pressure. It is an important component of tunnel reinforcement and support, often used for permanent tunnel support. When water accumulates in the tunnel, the water enters the seepage layer 101 through the seepage plug 21, then the connecting channel 22, and finally enters the drainage channel 25 from the bottom of the seepage layer 101, and then flows into the drainage ditch 3. At the same time, water on the surface of the track subgrade 103 enters the connecting channel 24 through the seepage plug 23. The water enters the drainage ditch 3 through the drainage channel 25. The water inside the drainage ditch 3 is filtered by the filter plate 31 to prevent the drainage ditch 3 from becoming blocked. When cleaning the impurities on one side of the filter plate 31, first, pull the reinforcing rod 325 upward until the bottom end of the reinforcing rod 325 disengages from the positioning rod 321. At this time, the limiting piece 326 compresses the spring 327. Then pull the positioning rod 321 until one end of the positioning rod 321 disengages from the interior of the filter plate 31. The filter plate 31 can then be removed for cleaning. At the same time, the telescopic rod 323 can improve the stability of the positioning rod 321 during use. Similarly, the positioning rod 321 can fix the filter plate 31 under the restoring force of the restoring spring 324. The reinforcing rod 325 can enter the interior of the positioning rod 321 under the restoring force of the spring 327 to strengthen the fixing effect of the filter plate 31.

[0032] Finally, it should be noted that the above embodiments are merely examples for clearly illustrating the present invention and are not intended to limit the implementation. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the protection scope of this invention.

Claims

1. A waterproof sealing support structure for subway tunnels, including a corrosion-resistant layer (100), characterized in that: The corrosion-resistant layer (100) has a permeable layer (101) on its inner side. A reinforcing support layer (102) is provided on one side of the permeable layer (101). A track bed (103) is provided at the bottom of the reinforcing support layer (102). Drainage channels (3) are fixedly connected to both sides of the track bed (103). Filter plates (31) are inserted into the upper part of the drainage channels (3). A quick-release assembly (32) for fixing the filter plates (31) is provided on the upper part of one side of the filter plates (31).

2. The waterproof sealing support structure for subway tunnels as described in claim 1, characterized in that: The surface of the corrosion-resistant layer (100) is provided with a plurality of water-permeable plugs (21), and the bottom side of the water-permeable plugs (21) is provided with a connecting channel (22).

3. The waterproof sealing support structure for subway tunnels as described in claim 1, characterized in that: Multiple seepage plugs (23) are embedded above the surface of the drainage ditch (3). A connecting channel (24) is provided at the bottom of the seepage plug (23). A drainage channel (25) is connected through the bottom of the connecting channel (24).

4. The waterproof sealing support structure for subway tunnels as described in claim 3, characterized in that: The middle part of the drainage channel (25) is inclined to both sides, and the two ends of the drainage channel (25) are connected to the drainage ditch (3).

5. The waterproof sealing support structure for subway tunnels as described in claim 1, characterized in that: The quick-release assembly (32) includes a positioning rod (321), a connecting plate (322), a telescopic rod (323), and a restoring spring (324). The positioning rod (321) is inserted above one side of the drainage ditch (3). The connecting plate (322) is fixedly connected to the lower side of one side of the positioning rod (321). The restoring spring (324) is fixedly connected between the connecting plate (322) and the drainage ditch (3). The telescopic rod (323) is provided in the middle of the restoring spring (324).

6. The waterproof sealing support structure for subway tunnels as described in claim 5, characterized in that: The quick-release assembly (32) also includes a reinforcing rod (325), a limiting piece (326), and a spring (327). The reinforcing rod (325) is inserted into the top side of the drainage channel (3). The limiting piece (326) is fixedly connected to the outside of the reinforcing rod (325). The spring (327) is fixedly connected between the limiting piece (326) and the drainage channel (3).

7. The waterproof sealing support structure for subway tunnels as described in claim 6, characterized in that: The two ends of the telescopic rod (323) are welded to the drainage ditch (3) and the connecting plate (322) respectively.

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