Tunnel pavement waterproof and drainage system

Abstract

The utility model relates to the field of roadbed drainage and protection, and particularly discloses a tunnel pavement waterproof and drainage system which comprises a foundation stone filling layer, a rubble layer and a concrete foundation layer which are arranged from bottom to top, drainage foundations are arranged on the two sides of the foundation stone filling layer, a first concave drainage groove is formed in the upper end of each drainage foundation, and a second concave drainage groove is formed in the lower end of each drainage groove. A plurality of first drainage grooves are formed in the foundation stone filling layer, a plurality of springs are vertically arranged in the first drainage grooves, second drainage grooves are formed in the springs, the second drainage grooves are formed by bending steel plates, a plurality of water leakage holes are formed in the second drainage grooves, side blocking layers are arranged on the two sides of the foundation stone filling layer, the rubble layer and the concrete foundation layer, and the side blocking layers are of concrete structures. The utility model aims to solve the technical problem of how to realize roadbed protection and drainage.

Description

Technical Field

[0001] The utility model relates to the field of roadbed drainage and protection, and specifically discloses a tunnel pavement drainage system. Background Art

[0002] The roadbed is the foundation of the road surface and is a geotechnical structure formed by excavation or filling. In order to ensure the stability of the roadbed, relevant drainage facilities will be strictly set up, such as drainage ditches and rapids on the ground, blind ditches and seepage pipes underground, so as to reduce the water content in the roadbed soil layer and avoid roadbed collapse.

[0003] In the prior art, application number: 202021476299.5 discloses a road subgrade drainage blind ditch, including a base layer, a reinforcement layer fixedly installed on the top of the base layer, an impermeable geotextile laid on the top of the base layer and the reinforcement layer, a fixed plate located on the top of the impermeable geotextile movably installed inside the reinforcement layer, a water leakage hole is opened inside the fixed plate, gravel is filled between the impermeable geotextile and the fixed plate, a fixed sleeve extending to the inside of the gravel is fixedly installed at the bottom of the fixed plate, a support spring is movably installed inside the fixed sleeve, a movable rod extending to the bottom of the impermeable geotextile is movably installed at the bottom of the support spring, and a support plate is fixedly installed at the bottom of the movable rod. The road subgrade drainage blind ditch can effectively ensure the stability of the road, effectively reduce the collapse and depression caused by the blind ditch, and is more convenient for users to use.

[0004] The above patent discloses a blind ditch structure, which has stable supporting performance and effectively reduces the collapse of the blind ditch. There are also many blind ditch structures in the prior art, but these structures have relatively poor drainage function and unstable structure. Utility Model Content

[0005] In view of this, the purpose of the utility model is to provide a tunnel pavement drainage system to solve the technical problem of how to achieve roadbed protection and drainage.

[0006] In order to achieve the above object, the utility model provides the following technical solutions:

[0007] A tunnel pavement drainage system includes a foundation stone filling layer, a slab stone layer and a concrete foundation layer arranged from bottom to top, drainage foundations are arranged on both sides of the foundation stone filling layer, a concave first drainage groove is formed on the upper end of the drainage foundation, a plurality of springs are vertically arranged in the first drainage groove, a second drainage groove is arranged on the spring, the second drainage groove is formed by bending a steel plate, a plurality of leakage holes are arranged on the second drainage groove, and side retaining layers are arranged on both sides of the foundation stone filling layer, the slab stone layer and the concrete foundation layer, and the side retaining layer is a concrete structure. In this scheme, a foundation stone filling layer, a slab stone layer and a concrete foundation layer are arranged, wherein the concrete foundation layer is not easy to seep water, and the amount of rainwater directly penetrating downward is not much. The slab stone layer and the foundation stone filling layer can filter some of the soil in the water, but it will still seep water downward, and the water flow can flow from both sides of the roadbed to the bottom first drainage groove. In addition, the stability and bearing capacity of the concrete foundation layer in this scheme are very good, and with the foundation stone filling layer and the slab stone layer as the foundation, the entire roadbed is more stable. In this solution, a second drainage groove is also arranged in the first drainage groove, and a spring is arranged at the bottom of the second drainage groove. When a large amount of garbage, gravel, soil and other debris accumulates in the second drainage groove, the mass of the second drainage groove increases and the spring is compressed to move downward to increase the space above the second drainage groove for better drainage. After the debris is cleared, the second drainage groove returns to its original position. The arrangement of the spring can ensure the drainage effect of the second drainage groove.

[0008] Optionally, a plurality of drainage pipes are arranged in the slate layer, the drainage pipes are rectangular, the upper ends of the drainage pipes are bent and arched upward, the upper ends of the drainage pipes are provided with a plurality of drainage holes, and the two sides of the drainage pipes extend to the outside of the side barrier layer. With this solution, the drainage pipes arranged in the slate layer can collect the water flowing downward in the slate layer, and then discharge it into the first drainage grooves on both sides.

[0009] Optionally, a barrier layer is provided on the side of the drainage foundation away from the side barrier layer. With this solution, the barrier layer can protect the first drainage groove and the second drainage groove.

[0010] Optionally, the plurality of drain pipes are arranged along the length of the slab layer, and two adjacent drain pipes are arranged in an up-and-down staggered manner. Arranging the drain pipes side by side will affect the structure of the slab layer to a certain extent, thereby causing stability problems of the entire slab layer, while staggering them up-and-down can avoid this problem to a certain extent.

[0011] Optionally, a fixing rod is vertically arranged below the drain pipe, and the fixing rod is inserted into the slate layer, the foundation stone filling layer and the soil. With this solution, the fixing rod can prevent the displacement of the drain pipe, and avoid the displacement of the drain pipe in the slate layer, especially left-right deflection.

[0012] Optionally, a fixing plate is horizontally arranged in the foundation stone filling layer, a fixing hole for the fixing rod to pass through is arranged at the center of the fixing plate, a baffle is arranged in the middle of the fixing rod, and the baffle can be abutted against the fixing plate up and down. This solution can provide a certain degree of vertical support for the fixing rod.

[0013] Optionally, a slope protection layer is formed on the side of the retaining layer away from the concrete foundation layer. By adopting this solution, the slopes on both sides of the roadbed can be protected.

[0014] The working principle and beneficial effects of this solution are:

[0015] This solution is mainly used in tunnels or sections before and after tunnels. Its function is to improve the drainage effect and avoid water accumulation in tunnels. This solution adopts a foundation stone filling layer, a slab stone layer and a concrete foundation layer to form a roadbed. The roadbed has good bearing capacity and stability, a long roadbed life and is not easy to be damaged. At the same time, this solution is provided with a first drainage trough and a second drainage trough on both sides of the roadbed, wherein the second drainage trough is arranged on the first drainage trough by a spring. The second drainage trough can play a filtering role to prevent a large amount of debris from accumulating in the first drainage trough, which is inconvenient to clean. At the same time, the second drainage trough can also play a certain drainage role. A drainage pipe is also provided in this solution, which can discharge rainwater that has penetrated into the slab stone layer to prevent a large amount of rainwater from continuing to flow downward to the soil layer.

[0016] Other advantages, objectives and features of the present invention will be described in the following description to some extent, and will be apparent to those skilled in the art based on the following examination and research, or can be taught from the practice of the present invention to some extent. The objectives and other advantages of the present invention can be achieved and obtained through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of an embodiment;

[0018] Figure 2 A longitudinal cross-sectional view of a part of the structure of the embodiment;

[0019] Figure 3 This is a schematic diagram of the structure of the drainage pipe.

[0020] The markings in the attached drawings are as follows: foundation stone filling layer 1, slab stone layer 2, concrete foundation layer 3, first drainage ditch 4, second drainage ditch 5, leakage hole 6, side retaining layer 7, retaining layer 8, slope protection layer 9, spring 10, drainage pipe 11, fixing rod 12, fixing plate 13, retaining piece 14, drainage hole 15. DETAILED DESCRIPTION

[0021] The following is further described in detail through specific implementation methods:

[0022] Example

[0023] A tunnel pavement drainage system, such as Figure 1-Figure 3 As shown, it includes a foundation stone filling layer 1, a sheet stone layer 2 and a concrete foundation layer 3 arranged from bottom to top. Both sides of the foundation stone filling layer 1, the sheet stone layer 2 and the concrete foundation layer 3 are vertically provided with a concrete side blocking layer 7.

[0024] Drainage foundations made of concrete are arranged on both sides of the foundation stone filling layer 1. A concave first drainage groove 4 is formed at the upper end of the drainage foundation. A number of springs 10 are evenly and vertically fixed in the first drainage groove 4 along the length direction. A second drainage groove 5 is fixed on the spring 10. The second drainage groove 5 is formed by bending a steel plate and is provided with a number of leakage holes 6.

[0025] A plurality of drainage pipes 11 are arranged in the slab layer 2. The drainage pipes 11 are rectangular in shape. The upper ends of the drainage pipes 11 are bent and arched upward. A plurality of drainage holes 15 are arranged at the upper ends of the drainage pipes 11. Both sides of the drainage pipes 11 extend out of the side barrier layer 7. The length direction of the drainage pipes 11 is parallel to the width direction of the slab layer 2. The plurality of drainage pipes 11 are evenly arranged along the length direction of the slab layer 2, and two adjacent drainage pipes 11 are staggered up and down.

[0026] A fixing rod 12 is vertically fixed at the lower end of the drainage pipe 11, and a baffle 14 is horizontally fixed at the middle of the fixing rod 12. A fixing plate 13 is placed in the foundation stone filling layer 1, and a fixing hole for the fixing rod 12 to pass through is provided at the center of the fixing plate 13. After the fixing rod 12 is inserted downward into the slate layer 2, the foundation stone filling layer 1 and the soil below, the fixing rod 12 is inserted into the fixing hole of the fixing plate 13, and the baffle 14 is abutted against the fixing plate 13 from top to bottom.

[0027] A concrete retaining layer 8 is arranged on the side of the drainage foundation away from the slab stone layer 2 , and a slope protection layer 9 is formed on the side of the retaining layer 8 away from the concrete foundation layer 3 .

[0028] When implementing:

[0029] When it rains, rainwater flows through the concrete foundation layer 3 to the second drainage grooves 5 on both sides, then flows into the first drainage grooves 4 through the leak holes 6 of the second drainage grooves 5, and then flows out of the first drainage grooves 4. When debris accumulates in the second drainage grooves 5, the second drainage grooves 5 will compress the springs 10 downward, causing them to move downward. At this time, the space above the second drainage grooves 5 becomes larger, ensuring drainage efficiency. The water entering the slate layer 2 is discharged through the drain pipe 11. Since the drain pipe 11 is arranged along the length direction of the slate layer 2, most of the water will contact the drain pipe 11 and be discharged. At the same time, the fixing rod 12 arranged below the drain pipe 11 can play a fixing role to prevent the fixing rod 12 from being displaced.

[0030] The above is only an embodiment of the utility model, and the common knowledge such as the known specific structure and characteristics in the scheme is not described in detail here. It should be pointed out that for those skilled in the art, several deformations and improvements can be made without departing from the structure of the utility model, which should also be regarded as the protection scope of the utility model, and these will not affect the effect of the implementation of the utility model and the practicality of the utility model.

Claims

1. A tunnel pavement drainage system, characterized in that: It includes a foundation stone filling layer, a slate layer and a concrete foundation layer arranged from bottom to top, drainage foundations are arranged on both sides of the foundation stone filling layer, a concave first drainage groove is formed at the upper end of the drainage foundation, a plurality of springs are vertically arranged in the first drainage groove, a second drainage groove is arranged on the spring, the second drainage groove is formed by bending a steel plate, a plurality of leakage holes are arranged on the second drainage groove, side retaining layers are arranged on both sides of the foundation stone filling layer, the slate layer and the concrete foundation layer, and the side retaining layers are concrete structures.

2. A tunnel pavement drainage system according to claim 1, characterized in that: A plurality of drainage pipes are arranged in the stone layer. The drainage pipes are rectangular in shape. The upper ends of the drainage pipes are bent and arched upward. The upper ends of the drainage pipes are provided with a plurality of drainage holes. Both sides of the drainage pipes extend out of the side baffle layer.

3. A tunnel pavement drainage system according to claim 2, characterized in that: A retaining layer is arranged on the side of the drainage foundation away from the side retaining layer.

4. A tunnel pavement drainage system according to claim 3, characterized in that: The plurality of drainage pipes are arranged along the length direction of the slab stone layer, and two adjacent drainage pipes are arranged in an up-and-down staggered manner.

5. A tunnel pavement drainage system according to claim 4, characterized in that: A fixing rod is vertically arranged below the drainage pipe, and the fixing rod is inserted into the slab stone layer, the foundation stone filling layer and the soil.

6. A tunnel pavement drainage system according to claim 5, characterized in that: A fixing plate is horizontally arranged in the foundation stone filling layer, a fixing hole for a fixing rod to pass through is arranged at the center of the fixing plate, a baffle is arranged in the middle of the fixing rod, and the baffle can be abutted against the fixing plate up and down.

7. A tunnel pavement drainage system according to claim 6, characterized in that: A slope protection layer is formed on the side of the retaining layer away from the concrete foundation layer.

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