A new type of prefabricated tunnel drainage ditch structure

Abstract

The utility model discloses a novel prefabricated tunnel drainage ditch structure, including a plurality of drainage ditch bases and a plurality of grit chamber bases; a drainage groove is provided in the drainage ditch base, wherein a grit chamber base is provided with a grit chamber; the drainage groove is connected with the grit chamber, wherein the depth of the grit chamber is greater than the depth of the drainage groove; a clamping groove is provided at the upper end of the drainage ditch base close to the road surface, wherein a first grate is installed in the clamping groove. By installing the drainage ditch base close to the side walls on both sides of the tunnel, wherein a vertical grate clamping groove is provided on the side wall of the drainage ditch base, and the clamping groove is connected with the tunnel road surface, rainwater on the road surface can be discharged to the drainage ditch in time, ensuring that there will be no large-scale water accumulation on the tunnel road surface, and by installing a grit chamber base at an interval of 30m at the drainage ditch base, wherein the grit chamber base is sunken relative to the drainage ditch base, the space is increased, sediments such as mud, sand, leaves, etc. can be collected, the drainage ditch is prevented from being blocked, and the cleaning workload of the tunnel drainage system is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of tunnel construction, in particular to a novel prefabricated tunnel drainage ditch structure. Background Art

[0002] In order to ensure the smooth discharge of seepage water in the tunnel, a complete drainage system is usually required in highway, railway, subway and other tunnels. The drainage ditch is an important part of the drainage system of the tunnel project. The quality of the drainage ditch structure is related to the realization of the drainage function of the tunnel structure itself, and also has a certain impact on the engineering cost of the entire tunnel project.

[0003] Given that some commonly used tunnel drainage ditches are complex in structure and large in size, which in turn affects the limit size of tunnel construction, this increases the difficulty of construction while also increasing some of the engineering workload; and existing tunnel drainage ditches are prone to blockage problems. When the amount of water in the drainage ditch decreases and the flow rate of the water slows down, the sediment in the drainage ditch will settle at the bottom of the drainage ditch, affecting the drainage capacity of the drainage ditch, causing the water in the drainage ditch to overflow onto the tunnel road surface, affecting driving safety. Summary of the invention

[0004] The purpose of the utility model is to provide a novel prefabricated tunnel drainage ditch structure to solve the problems raised in the above background technology.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A novel prefabricated tunnel drainage ditch structure comprises a plurality of drainage ditch bases and a plurality of grit tank bases, wherein the drainage ditch bases and the grit tank bases are arranged side by side along the length of the tunnel; a drainage groove is provided in the drainage ditch base, wherein a grit tank base is provided with a grit tank; the drainage groove is connected with the grit tank, wherein the depth of the grit tank is greater than the depth of the drainage groove; a slot is provided at the upper end of the drainage ditch base close to the road surface, wherein a first grate is installed in the slot.

[0007] Preferably, the drainage ditch base and the grit chamber base are both made of C30 reinforced concrete, wherein the drainage ditch base and the grit chamber base are the same in length.

[0008] Preferably, a drainage ditch cover is provided on the drainage ditch base, wherein a grit chamber cover is provided on the grit chamber base.

[0009] Preferably, a rectangular mounting hole is provided on the cover plate of the grit chamber, wherein a second grate is provided in the rectangular mounting hole.

[0010] Preferably, the drainage ditch base is installed side by side with a sand settling tank base at an interval of 25 to 30 m.

[0011] Preferably, an anti-seepage layer is filled between the two adjacent drainage ditch bases.

[0012] Preferably, the inner walls of the drainage ditch base and the grit chamber base are coated with a hydrophobic layer.

[0013] Compared with the prior art, the utility model has the following beneficial effects: the utility model has the characteristics of simple structure, small space occupation, strong adaptability, flexible installation and convenient cleaning. The drainage ditch base is installed close to the side walls of the tunnel, wherein the side walls of the drainage ditch base are provided with vertical grate slots, which are connected to the tunnel pavement, so that rainwater on the road surface can be discharged to the drainage ditch in time to ensure that there will be no large-scale water accumulation on the tunnel pavement; a grit tank base is installed at an interval of 30m between the drainage ditch base, wherein the grit tank base is sunken relative to the drainage ditch base, and the space is increased, which can collect sediments such as mud, leaves, etc., to prevent the drainage ditch from being blocked, reduce the cleaning workload of the tunnel drainage system, and help save tunnel maintenance costs and ensure tunnel operation safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural schematic diagram of the utility model;

[0015] Figure 2 It is a structural schematic diagram of the connection between the drainage ditch base and the grit chamber base of the utility model;

[0016] Figure 3 It is a structural schematic diagram of the connection between the drainage ditch base and the drainage ditch cover plate of the utility model;

[0017] Figure 4 The utility model is a structural schematic diagram of the connection between the grit chamber base and the grit chamber cover plate.

[0018] Among them: 1. Drain ditch base; 2. Grit tank base; 3. Drain ditch; 4. Grit tank; 5. Card slot; 6. First grate; 7. Drain ditch cover; 8. Grit tank cover; 9. Rectangular mounting hole; 10. Second grate; 11. First limit card block; 12. Second limit card block. DETAILED DESCRIPTION

[0019] The utility model is further described in detail below in conjunction with the accompanying drawings.

[0020] Please refer to Figures 1 to 4 To achieve the above purpose, the utility model provides the following technical solutions:

[0021] A novel prefabricated tunnel drainage ditch structure comprises a plurality of drainage ditch bases 1 and a plurality of grit tank bases 2, wherein the drainage ditch base 1 and the grit tank base 2 are arranged side by side along the length of the tunnel; a drainage trough 3 is provided in the drainage ditch base 1, wherein a grit tank base 2 is provided with a grit tank 4; the drainage trough 3 is connected with the grit tank 4, wherein the depth of the grit tank 4 is greater than the depth of the drainage ditch 3; a groove 5 is provided at the upper end of the drainage ditch base 1 close to the road surface, wherein a first grate 6 is installed in the groove 5. The drainage ditch base 1 is installed close to the side walls of the tunnel, wherein the side walls of the drainage ditch base 1 are provided with vertical slots 5 for installing the first grate 6, and the first grate 6 is connected to the tunnel road surface, wherein the first grate 6 can discharge rainwater on the road surface into the drainage ditch 3 in time, thereby ensuring that there is no large-scale water accumulation on the tunnel road surface; the grit tank base 2 is installed at a certain distance in the drainage ditch base 1, wherein the grit tank base 2 sinks relative to the drainage ditch base 1, so that the sediments such as mud, leaves, etc. carried in the drainage ditch 3 are collected in the grit tank 4, thereby maintaining the normal operation of the tunnel drainage system.

[0022] Please refer to Figure 1 , Figure 2 As an embodiment of the utility model, the drainage ditch base 1 and the grit chamber base 2 are both made of C30 reinforced concrete, wherein the drainage ditch base 1 and the grit chamber base 2 have the same length.

[0023] In the above scheme, the drainage ditch base 1 is prefabricated with C30 reinforced concrete, and the length of each section of the drainage ditch base 1 is 1m, wherein the drainage ditch base 1 is connected to the road surface side and a vertical slot 5 for installing the first grate 6 is reserved, which is installed on site, and an anti-seepage layer is filled between two adjacent drainage ditch bases 1, wherein the anti-seepage layer is polymer cement mortar, which can avoid water seepage between two adjacent drainage ditch bases 1; since the drainage ditch base 1 can be mass-produced in the prefabrication plant, the quality of the drainage ditch base 1 is effectively guaranteed. During tunnel construction, the construction of the tunnel drainage ditch can be completed by connecting several prefabricated drainage ditch bases 1 in sequence, which effectively improves the construction efficiency; the grit chamber base 2 is prefabricated with C30 reinforced concrete, and the length of each section of the grit chamber base 2 is 1m. According to the installation requirements, the grit chamber base 2 is installed at intervals of 30m on the drainage ditch base 1 for centralized treatment of the sediment carried in the drainage trough 3.

[0024] Please refer to Figure 3 , Figure 4 As an embodiment of the utility model, a drainage ditch cover plate 7 is provided on the drainage ditch base 1, wherein a grit tank cover plate 8 is provided on the grit tank base 2; a rectangular mounting hole 9 is opened on the grit tank cover plate 8, wherein a second grate 10 is provided in the rectangular mounting hole 9.

[0025] In the above scheme, the drain ditch cover 7 is prefabricated with C30 reinforced concrete, and the length of each section of the drain ditch cover 7 is 1m. A first limit block 11 is provided at the bottom of the drain ditch cover 7, wherein the first limit block 11 is clamped with the upper opening of the drain ditch base 1 to improve the stability of the installation of the drain ditch cover 7. The drain ditch cover 7 is movably connected to the drain ditch base 1, which is convenient for regularly opening the drain ditch cover 7 to desilt the inside of the drain ditch base 1; the sand settling tank cover 8 is prefabricated with C30 reinforced concrete, and the length of each section of the sand settling tank cover 8 is 1m. The length is 1m, and a second limiting block 12 is provided at the bottom of the grit tank cover 8, wherein the second limiting block 12 is clamped with the upper opening of the grit tank base 2, so as to improve the stability of the installation of the grit tank cover 8. By opening a rectangular mounting hole 9 above the grit tank cover 8 and horizontally arranging a second grate 10 in the rectangular mounting hole 9, large-scale water accumulation on the gutter cover 7 can be avoided. The gutter base 1 and the grit tank base 2 are combined to collect rainwater and guide it into the tunnel rainwater pump room, thereby ensuring the normal operation of the tunnel drainage system.

[0026] See also Figure 1 As an embodiment of the utility model, a grit chamber base 2 is installed side by side on a drainage ditch base 1 at an interval of 25 to 30 m, wherein the inner walls of the drainage ditch base 1 and the grit chamber base 2 are coated with a hydrophobic layer.

[0027] In the above-mentioned scheme, a grit chamber base 2 is installed at an interval of 30m on the drainage ditch base 1, wherein the grit chamber base 2 is sunken relative to the drainage ditch base 1, so that the grit chamber 4 and the drainage ditch 3 form a stepped structure, which is convenient for the grit chamber 4 to collect sediments such as mud, leaves, etc., to prevent the drainage ditch from being blocked; by coating the inner walls of the drainage ditch base 1 and the grit chamber base 2 with hydrophobic material to form a hydrophobic layer, the flow rate of the seepage water flow can be increased, thereby improving the ability of the water flow in the drainage ditch to carry sediments, reducing the accumulation of sediments in the drainage ditch, and reducing the cleaning workload of the tunnel drainage system, which is conducive to saving tunnel maintenance costs and ensuring the safety of tunnel operation.

[0028] Although the specific embodiments of the present invention are described above, those skilled in the art should understand that these are only examples, and the protection scope of the present invention is defined by the appended claims. Those skilled in the art may make various changes or modifications to these embodiments without departing from the principle and essence of the present invention, but these changes and modifications fall within the protection scope of the present invention.

Claims

1. A new type of prefabricated tunnel drainage ditch structure, characterized in that: The invention comprises a plurality of drainage ditch bases (1) and a plurality of grit chamber bases (2), wherein the drainage ditch bases (1) and the grit chamber bases (2) are arranged side by side along the length of the tunnel; a drainage groove (3) is provided in the drainage ditch base (1), wherein a grit chamber base (2) is provided with a grit chamber (4); the drainage groove (3) is connected with the grit chamber (4), wherein the depth of the grit chamber (4) is greater than the depth of the drainage ditch (3); a clamping groove (5) is provided at the upper end of the drainage ditch base (1) close to the road surface, wherein a first grate (6) is installed in the clamping groove (5).

2. A novel prefabricated tunnel drainage ditch structure according to claim 1, characterized in that: The drainage ditch base (1) and the grit chamber base (2) are both made of C30 reinforced concrete, wherein the drainage ditch base (1) and the grit chamber base (2) are of the same length.

3. A novel prefabricated tunnel drainage ditch structure according to claim 2, characterized in that: The drainage ditch base (1) is provided with a drainage ditch cover plate (7), wherein the grit chamber base (2) is provided with a grit chamber cover plate (8).

4. A novel prefabricated tunnel drainage ditch structure according to claim 3, characterized in that: A rectangular mounting hole (9) is provided on the grit chamber cover plate (8), wherein a second grate (10) is provided in the rectangular mounting hole (9).

5. A novel prefabricated tunnel drainage ditch structure according to claim 1, characterized in that: The drainage ditch base (1) is installed with a sand settling tank base (2) in parallel at intervals of 25 to 30 meters.

6. A novel prefabricated tunnel drainage ditch structure according to claim 1, characterized in that: An anti-seepage layer is filled between two adjacent drainage ditch bases (1).

7. A novel prefabricated tunnel drainage ditch structure according to claim 1, characterized in that: The inner walls of the drainage ditch base (1) and the grit chamber base (2) are both coated with a hydrophobic layer.

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