An underground tunnel drainage facility

Abstract

The utility model discloses an underground passage drainage facility relates to drainage engineering technical field, including the drainage ditch of being located in the both sides of underground passage pavement, is equipped with the apron bearing block on the both sides inner wall of drainage ditch, the apron bearing block is installed with a plurality of drainage ditch apron and the dirt screen board respectively, the bottom surface of drainage ditch is along the length direction and is continuously undulating, and the low point department of drainage ditch all is provided with the dirt suction pipe, the drainage ditch of this drainage facility adopts the cooperation design of continuous undulating ditch bottom and dirt suction pipe, and the continuous undulating ditch bottom makes the sludge and sundries automatic collection to the low point of ditch bottom, and the dirt suction pipe sets up at the low point department of drainage ditch and its upper end hides in the pavement recess through the pipeline flange, when dredging, only need to open the recess apron to make the pipeline flange connection suction equipment can directly work, need not to open the drainage ditch apron completely, avoids the risk of manpower handling completely, and this mechanism not only can reduce the time consumption of single dredging, but also reduces the pavement operation frequency.

Description

Technical Field

[0001] This utility model relates to the field of drainage engineering technology, specifically to an underground passage drainage facility. Background Technology

[0002] Underground passages (such as vehicular tunnels and pedestrian underpasses) are key nodes in urban transportation networks. They are often in a closed or semi-closed state, and their road surfaces and drainage systems need to address two major challenges: First, the risk of water accumulation: during heavy rain, surface runoff accumulates rapidly, and if drainage is not smooth, the passage can easily be flooded; second, the accumulation of pollutants: vehicles carry mud, oil, and debris (leaves / plastic) carried by the wind into the drainage ditches with rainwater.

[0003] Traditional underground passage drainage systems require the complete removal of drainage ditch covers during dredging. Then, sludge suction pipes are inserted into the drainage ditch to remove the sludge. Each dredging operation takes a long time, and the risk of traffic accidents is higher when working in underground passages for extended periods. Furthermore, injuries can easily occur during the process of removing and replacing the covers. Utility Model Content

[0004] The purpose of this utility model is to provide an underground channel drainage facility to address the shortcomings of existing technologies.

[0005] The technical solution of this utility model is: an underground passage drainage facility, including drainage channels located on both sides of the underground passage road surface, cover plate bearing blocks are provided on the inner walls of both sides of the drainage channel, and several drainage channel cover plates and debris-blocking net plates are installed above and below the cover plate bearing blocks respectively. The bottom surface of the drainage channel is continuously undulating along the length direction, and a suction pipe is provided at the lowest point of the drainage channel. It also includes a water collection well located in the middle of the underground passage road surface and a rainwater pipe located below the underground passage road surface. A water guide pipe is installed between the water collection well and the drainage ditches on both sides. The bottom of the water collection well is connected to the rainwater pipe. A well cover is installed on the top of the water collection well. A debris trap plate located below the outlet of the water guide pipe is detachably installed inside the water collection well.

[0006] Preferably, the bottom surface of the drainage ditch cover plate is provided with four drainage ditch cover plate legs, and the bottom surface of the debris barrier plate is provided with four debris barrier plate legs. Both the drainage ditch cover plate legs and the debris barrier plate legs are inserted into corresponding slots opened on the cover plate bearing block.

[0007] Preferably, the suction pipe penetrates the underground passage road surface and has a pipe flange installed at its upper end; the pipe flange is located in a groove opened in the underground passage road surface, and a cover plate adapted to it is installed on the groove.

[0008] Preferably, the debris-blocking tray includes an outer frame and a tie rod. A metal mesh is provided at the bottom of the outer frame. The metal mesh is conical in shape, and the lower end of the tie rod is fixedly connected to the top end of the metal mesh.

[0009] Preferably, the drainage ditch cover is provided with a water inlet, and a hidden pull ring is provided at each of the four corners of the drainage ditch cover.

[0010] Preferably, the bottom surface of the drainage ditch is V-shaped.

[0011] Compared with the prior art, this utility model has the following advantages: The drainage system features a continuously undulating channel bottom designed in conjunction with a suction pipe. The undulating channel bottom automatically collects sludge and debris to the lowest point. The suction pipe is located at the lowest point of the drainage channel, with its upper end concealed within a road surface groove via a pipe flange. During dredging, only the groove cover needs to be opened to connect the pipe flange to the suction equipment for direct operation, eliminating the need to fully lift the drainage channel cover and completely avoiding the risks associated with manual handling. This mechanism not only reduces the time required for a single dredging operation but also decreases the frequency of road surface work, making it particularly suitable for tunnels or underpasses with high traffic volume.

[0012] This drainage system achieves dual-layer filtration through the installation of a debris-blocking screen and a debris-blocking tray. These two elements form a dual barrier of "coarse filtration + fine filtration," solving the pain point of traditional drainage systems where the system needs to be shut down for cleaning after the filter screen becomes clogged. This modular design shortens the time required for each maintenance cycle and prevents debris from entering the rainwater pipes and causing blockages. It is especially suitable for urban underground passages where heavy rain is frequent, ensuring the continuous and efficient operation of the drainage system. Attached Figure Description

[0013] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a cross-sectional view of the present invention; Figure 3 for Figure 2 Enlarged view of point A in the middle; Figure 4 for Figure 1 Enlarged view of point B in the middle; Figure 5 This is a schematic diagram of the structure of the debris trap in Example 2; Figure 6 This is a side sectional view of the drainage ditch.

[0014] In the diagram: 1. Underground passage surface, 2. Tie rod, 3. Drainage ditch, 4. Cover plate support block, 5. Drainage ditch cover plate, 6. Drainage ditch cover plate support, 7. Trash screen plate, 8. Trash screen plate support, 9. Suction pipe, 10. Pipe flange, 11. Groove, 12. Cover plate, 13. Pull ring, 14. Water guide pipe, 15. Water collection well, 16. Rainwater pipe, 17. Manhole cover, 18. Trash screen plate, 19. Outer frame, 20. Metal mesh. Detailed Implementation

[0015] The present invention will be further described below with reference to the accompanying drawings and embodiments. Example 1

[0016] Reference Figure 1-4 As shown, an underground passage drainage facility includes drainage channels 3 located on both sides of the underground passage road surface 1. Cover plate support blocks 4 are provided on the inner walls of both sides of the drainage channels 3. Several drainage channel covers 5 and debris-blocking nets 7 are installed above and below the cover plate support blocks 4, respectively. Four drainage channel cover legs 6 are provided on the bottom surface of the drainage channel cover 5, and four debris-blocking net legs 8 are provided on the bottom surface of the debris-blocking nets 7. Both the drainage channel cover legs 6 and the debris-blocking net legs 8 are inserted into corresponding slots on the cover plate support blocks 4. This insertion mechanism enables rapid disassembly and installation of the drainage channel covers 5 and debris-blocking nets 7, solving the maintenance time-consuming problem caused by traditional bolt fixing. The legs are directly inserted into the slots, allowing for disassembly without tools, facilitating regular cleaning or replacement of the debris-blocking nets 7, and preventing debris accumulation and blockage.

[0017] The drainage ditch cover 5 has a water inlet, and each of the four corners of the drainage ditch cover 5 is equipped with a concealed pull ring 13. The pull ring 13 provides a quick manual opening mechanism. The concealed design does not affect the flatness of the road surface. The drainage ditch cover 5 can be lifted by applying force through the pull ring 13, which supports emergency maintenance.

[0018] like Figure 6 As shown, the bottom surface of drainage ditch 3 is continuously undulating along its length, and suction pipes 9 are installed at the lowest points of drainage ditch 3. This arrangement allows sludge and debris to automatically collect at the lowest point of the ditch, facilitating centralized suction and effectively improving dredging efficiency. More specifically, the bottom surface of drainage ditch 3 is V-shaped, and the V-shaped design further enhances the collection speed of sludge and debris.

[0019] The suction pipe 9 penetrates the underground passage surface 1, and a pipe flange 10 is installed at its upper end. The pipe flange 10 is located in a groove 11 opened in the underground passage surface 1, and a matching cover plate 12 is installed on the groove 11. During dredging, it is only necessary to open the groove 11 cover plate 12 to connect the pipe flange 10 to the suction equipment for direct operation, without having to fully lift the drainage ditch cover plate 5, thus completely avoiding the risks of manual handling.

[0020] It also includes a water collection well 15 located in the middle of the underground passage road surface 1 and a rainwater pipe 16 located below the underground passage road surface 1. A water guide pipe 14 is provided between the water collection well 15 and the drainage ditches 3 on both sides. The bottom of the water collection well 15 is connected to the rainwater pipe 16. A manhole cover 17 is installed on the top of the water collection well 15. A debris trap 18 located below the outlet of the water guide pipe 14 is detachably installed inside the water collection well 15.

[0021] In use, the drainage ditch cover plate 5 and the debris barrier plate 7 are first installed through the slots of the cover plate support block 4. The drainage ditch cover plate support 6 and the debris barrier plate support 8 are used to achieve quick insertion and fixation, forming the first coarse filtration barrier. During rainfall, rainwater flows into the drainage ditches 3 on both sides along the underground passage road surface 1. Due to the continuous undulation design of the ditch bottom, the sludge automatically collects to the lowest point. After the water flows through the debris barrier plate 7 to intercept large particles of debris, it is introduced into the collection well 15 through the water guide pipe 14, and then undergoes secondary fine filtration through the debris barrier plate 18. The rainwater that has undergone double filtration is finally discharged into the rainwater pipe 16. When dredging, there is no need to lift the drainage ditch cover plate 5. Just open the cover plate 12 of the groove 11, connect the suction equipment to the pipe flange 10, and the sludge at the bottom of the ditch can be directly sucked up. Example 2

[0022] As a preferred embodiment of this utility model, this embodiment designs the debris-blocking tray 18 based on Embodiment 1, specifically as follows: Reference Figure 5 As shown, the debris trap 18 includes an outer frame 19 and a pull rod 2. A metal mesh 20 is provided at the bottom of the outer frame 19. The metal mesh 20 is conical in shape, and the lower end of the pull rod 2 is fixedly connected to the top end of the metal mesh 20.

[0023] The conical metal mesh 20 provides a larger filtration area. The conical design of the mesh allows fine sand and particles to gather in all directions. Debris can be removed by vertically lifting the baffle plate 18 with the pull rod 2, which improves filtration efficiency and prevents silt from entering the rainwater pipe 16 and causing blockage.

[0024] This utility model is not limited to the above-described embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of this utility model, and the changed content still falls within the protection scope of this utility model.

Claims

1. A drainage system for an underground passage, comprising drainage ditches located on both sides of the underground passage's surface, characterized in that: The drainage ditch is provided with cover plate bearing blocks on both sides of the inner wall. Several drainage ditch cover plates and debris-blocking net plates are installed on the upper and lower parts of the cover plate bearing blocks respectively. The bottom surface of the drainage ditch is continuously undulating along the length direction, and a suction pipe is provided at the lowest point of the drainage ditch. It also includes a water collection well located in the middle of the underground passage road surface and a rainwater pipe located below the underground passage road surface. A water guide pipe is installed between the water collection well and the drainage ditches on both sides. The bottom of the water collection well is connected to the rainwater pipe. A well cover is installed on the top of the water collection well. A debris trap plate located below the outlet of the water guide pipe is detachably installed inside the water collection well.

2. The underground passage drainage facility according to claim 1, characterized in that: The bottom surface of the drainage ditch cover plate is provided with four drainage ditch cover plate legs, and the bottom surface of the debris barrier plate is provided with four debris barrier plate legs. Both the drainage ditch cover plate legs and the debris barrier plate legs are inserted into the corresponding slots opened on the cover plate bearing block.

3. The underground passage drainage facility according to claim 1, characterized in that: The suction pipe penetrates the underground passage road surface and has a pipe flange installed at its upper end; the pipe flange is located in a groove opened in the underground passage road surface and a cover plate adapted to it is installed on the groove.

4. The underground passage drainage facility according to claim 1, characterized in that: The debris-blocking tray includes an outer frame and a tie rod. A metal mesh is provided at the bottom of the outer frame. The metal mesh is conical in shape. The lower end of the tie rod is fixedly connected to the top end of the metal mesh.

5. The underground passage drainage facility according to claim 1, characterized in that: The drainage ditch cover is provided with a water inlet, and hidden pull rings are provided at the four corners of the drainage ditch cover.

6. The underground passage drainage facility according to claim 1, characterized in that: The bottom of the drainage ditch is V-shaped.

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