Tunnel built-in pump room system

Abstract

The utility model relates to a built-in pump room system for a tunnel, the wall surface of the tunnel is built by adopting shield segments, the lower part of the tunnel is provided with a ballast bed and a water collecting pit formed by sinking the ballast bed, the water collecting pit extends along the axial direction of the tunnel, and at least one water pumping device is arranged in the water collecting pit. The tunnel built-in pump room system further comprises a plurality of sets of cover plate assemblies arranged at the opening of the water collecting pit in a covering mode, the cover plate assemblies are provided with a plurality of exhaust holes distributed at intervals, and the exhaust holes are communicated with the space in the water collecting pit and the space above the ballast bed. The cover plate assembly is provided with an exhaust hole to communicate the in-pit space with the upper space, so that the air pressure is kept consistent. The cover plate assembly is slightly influenced by vibration airflow when a subway locomotive runs at a high speed, and the stability of connection with a ballast bed is high.

Description

Technical Field

[0001] The utility model relates to the technical field of tunnels, in particular to a tunnel built-in pump room system. Background Art

[0002] The underground tunnel part of urban rail transit needs to be equipped with a pump house, and a sump is set under the roadbed. The water in the sump can be used for fire prevention, and can also gather and collect excess water on the roadbed or in the tunnel. For example, Chinese public document CN107100670A discloses a shield tunnel built-in pump house structure, which discloses a drainage system on the sump and the roadbed.

[0003] When the opening of the sump is open, some debris in the tunnel will easily fall into the sump, affecting the normal operation of the pump room system. When the opening of the sump is covered with a cover plate, the sump can be closed to prevent foreign objects from falling in. However, when the subway locomotive runs at high speed, the subway locomotive generates a vibrating airflow above the sump, and the cover plate is easily loosened by the vibrating airflow, and the cover plate may even fall off the sump and impact the subway locomotive, which poses a technical problem of potential safety hazards and needs to be improved. Utility Model Content

[0004] In order to overcome the problems existing in the related art, an embodiment of the utility model provides a tunnel built-in pump room system.

[0005] According to a first aspect of an embodiment of the utility model, a tunnel-built-in pump room system is provided, wherein the wall of the tunnel is constructed with shield segments, a ballast bed and a sump recessed from the ballast bed are provided at the lower part of the tunnel, the sump extends along the axial direction of the tunnel, at least one pumping device is installed in the sump, and the tunnel-built-in pump room system further comprises a plurality of cover plate assemblies arranged at the opening of the sump, the cover plate assemblies being provided with a plurality of exhaust holes distributed at intervals, and the plurality of exhaust holes connecting the pit space inside the sump and the space above the ballast bed.

[0006] In one embodiment, the cover plate assembly includes a pit cover plate and a locking assembly for locking and connecting the pit cover plate, the locking assembly is fixed to the roadbed, and the exhaust hole passes through the pit cover plate.

[0007] In one embodiment, the exhaust holes are distributed in the pit cover in a mesh shape, and the exhaust holes are one or more of long holes, rectangular holes, and circular holes.

[0008] In one embodiment, at least a portion of the pit cover is inserted into the sump.

[0009] In one embodiment, the pit cover includes a mesh portion and an assembly portion located on opposite sides of the mesh portion, the assembly portion is provided with a plurality of assembly holes passing therethrough, the locking assembly locks the pit cover to the roadbed through the assembly holes, the mesh portion is provided with exhaust holes distributed in a grid pattern, and an end portion of the mesh portion extends beyond the assembly portion and is inserted into the sump.

[0010] In one embodiment, at least one mounting pump platform is protruding from the bottom of the sump, each of the pumping devices is installed on a corresponding mounting pump platform, and the water inlet of the pumping device extends to the bottom of the sump.

[0011] In one embodiment, two or more pumping devices are installed in the installation pump platform, and the tunnel built-in pump room system also includes a water level monitoring component, and the water level monitoring component is used to monitor the water level in the sump, and the tunnel built-in pump room system controls one of the pumping devices to drain water independently based on the water level monitoring signal of the water level monitoring component; or, the tunnel built-in pump room system controls two pumping devices to drain water simultaneously based on the water level monitoring signal of the water level monitoring component.

[0012] In one embodiment, the pumping device includes a pumping mechanism and a crushing mechanism, the crushing mechanism is connected to the bottom of the sump, the crushing mechanism is provided with a rotating crushing knife, and the pumping mechanism is connected to the chamber of the crushing mechanism.

[0013] In one embodiment, the shield segment is partially sunken to form a deep water pit, and the pumping device is installed in the deep water pit.

[0014] In one embodiment, the shield segments installed corresponding to the pumping device are steel segments or concrete segments, and the surfaces and joints of the shield segments are coated with waterproof materials.

[0015] The technical solution provided by the embodiment of the utility model can include the following beneficial effects: multiple groups of cover plate assemblies are arranged at intervals along the length direction of the sump to form multiple connected and positioned blocks, which can be laid flexibly and adjusted according to the height change around the sump. The cover plate assembly is provided with exhaust holes to connect the space in the pit and the space above, so as to maintain consistent air pressure. The cover plate assembly is less affected by the vibration airflow when the subway locomotive is running at high speed, and the connection with the roadbed is highly stable.

[0016] It should be understood that the above general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings herein are incorporated in and constitute a part of the specification, illustrate embodiments consistent with the present utility model, and together with the description, are used to explain the principles of the present utility model.

[0018] Figure 1 The figure is a schematic diagram showing the layout of a tunnel built-in pump room system according to an exemplary embodiment.

[0019] Figure 2 It is a cross-sectional schematic diagram showing a tunnel built-in pump room system according to an exemplary embodiment.

[0020] Figure 3 yes Figure 2 A magnified schematic diagram of center A.

[0021] Figure 4 is a schematic diagram showing a cover plate assembly according to an exemplary embodiment.

[0022] In the figure, shield segments 10; sump 20; installation pump station 21; water supply and drainage pipeline 30; pit cover 40; exhaust hole 41; mesh plate part 42; assembly part 43; assembly hole 44; ballast 50; sedimentation tank 51; drainage ditch 52; pumping device 60; pumping mechanism 61; crushing mechanism 62. DETAILED DESCRIPTION

[0023] Among them, the drawings are only used for illustrative explanations, and they only represent schematic diagrams rather than actual pictures, and should not be understood as limitations on the present utility model. In order to better illustrate the embodiments of the present utility model, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of the actual product. For those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings may be omitted.

[0024] The same or similar numbers in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if the terms "upper", "lower", "left", "right", "inside", "outside", etc. appear to indicate the orientation or position relationship, it is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the terms describing the position relationship in the drawings are only used for illustrative purposes and cannot be understood as a limitation on the present invention. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0025] In the description of the present invention, unless otherwise clearly specified and limited, if the term "connection" or the like appears to indicate the connection relationship between components, the term should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two components or the interaction relationship between two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0026] like Figures 1 to 4 As shown, the utility model provides a tunnel built-in pump house system, the wall of the tunnel is constructed with shield segments 10, and the shield segments 10 are laid along the excavation tunnel to form a channel structure. The lower part of the tunnel is provided with a ballast 50 and a sump 20 formed by the ballast 50, and a plurality of short sleepers are fixed on the ballast 50, and two parallel guide rails are laid and fixed above the short sleepers. The sump 20 extends along the axial direction of the tunnel, and the sump 20 is located between the two guide rails. The sump 20 is a long strip groove to gather the accumulated water in the middle of the tunnel. Preferably, a drainage ditch 52 and a sedimentation tank 51 are provided on the ballast 50, the drainage ditch 52 is extended along the length direction of the ballast 50, and the sedimentation tank 51 is distributed at intervals in the drainage ditch 52 to form the accumulation of water and preliminary sedimentation. The sedimentation tank 51 is connected to the sump 20 through a channel to gather the accumulated water to the sump 20. At least one pumping device 60 is installed in the sump 20, and the pumping device 60 is used to discharge the accumulated water in the sump 20 to keep the water level in the sump 20 within a preset water level range. Optionally, the accumulated water in the sump 20 can be used for fire fighting. The pumping device 60 is connected to the outside through the water supply and drainage pipeline 30.

[0027] The tunnel built-in pump room system also includes a plurality of cover plate assemblies covering the opening of the sump 20, and the cover plate assemblies are provided with a plurality of exhaust holes 41 distributed at intervals, and the plurality of exhaust holes 41 connect the pit space of the sump 20 and the space above the roadbed 50. The cover plate assembly can cover the opening of the sump 20 to prevent foreign matter from falling into the sump 20. At the same time, a plurality of cover plate assemblies are distributed at intervals along the length direction of the sump 20 to form a plurality of connection positions, which are flexible to lay and can be adjusted according to the height changes around the sump 20. The cover plate assembly is provided with exhaust holes 41 to connect the pit space and the space above, so as to keep the upper and lower air pressures consistent. The cover plate assembly is less affected by the vibration airflow when the subway locomotive is running at high speed, and has high stability in connection with the roadbed 50.

[0028] In one embodiment, the cover plate assembly includes a pit cover plate 40 and a locking assembly for locking and connecting the pit cover plate 40, the locking assembly is fixed to the roadbed 50, and the exhaust hole 41 passes through the pit cover plate 40. The pit cover plate 40 is a plate-like structure, and the locking assembly locks the periphery of the pit cover plate 40 to the roadbed 50, and the pit cover plate 40 can cover the opening of the sump 20, with a good covering effect. The locking assembly can use expansion bolts or embedded parts to lock and connect the pit cover plate 40 to the roadbed 50, and the connection is convenient.

[0029] Preferably, the exhaust holes 41 are distributed in the pit cover plate 40 in a mesh shape, and the exhaust holes 41 are one or more of long holes, rectangular holes, and circular holes. The pit cover plate 40 is provided with mesh-shaped exhaust holes 41, that is, a plurality of exhaust holes 41 are arranged in an array in the transverse and longitudinal directions of the pit cover plate 40, thereby forming a grid-like structure. Based on processing requirements, the exhaust holes 41 are waist-shaped long holes with arcs at both ends; or, the exhaust holes 41 are rectangular holes; or, the exhaust holes 41 are circular holes. It is worth mentioning that the exhaust holes 41 can be set as hole structures of other shapes.

[0030] Optionally, the pit cover 40 is laid in a flat plate shape at the opening of the sump 20 to seal the opening.

[0031] Further preferably, at least part of the pit cover 40 is inserted into the sump 20. The pit cover 40 is inserted into the sump 20 to form a circumferential positioning, which can not only increase the overall deadweight of the pit cover 40, but also increase the limited length in the depth direction, thereby improving the installation stability of the pit cover 40 and reducing the risk of being lifted by airflow.

[0032] In a preferred embodiment, the pit cover 40 includes a mesh portion 42 and assembly portions 43 located on opposite sides of the mesh portion 42. The thickness of the mesh portion 42 is greater than the thickness of the assembly portion 43, and the assembly portion 43 protrudes from both sides of the mesh portion 42. The assembly portion 43 is provided with a plurality of assembly holes 44 that penetrate through. When the mesh portion 42 exceeds the end of the assembly portion 43 and is inserted into the sump 20, the assembly portions 43 on both sides are mounted on the ballast 50. The locking assembly locks the pit cover 40 to the ballast 50 through the assembly holes 44, so that the pit cover 40 is tightly connected to the ballast 50. Preferably, the mesh portion 42 is provided with grid-shaped distribution of exhaust holes 41, and a thin-walled partition is provided between two adjacent exhaust holes 41.

[0033] like Figures 1 to 4As shown, the pumping device 60 is installed in the sump 20 to extract the accumulated water in the sump 20 to control the water level. Preferably, the roadbed 50 is cast on the shield segment 10, and the bottom of the sump 20 corresponds to the inner wall surface of the shield segment 10. Among them, at least one mounting pump platform 21 is protrudingly provided at the bottom of the sump 20, and each pumping device 60 is installed on the corresponding mounting pump platform 21, and the water inlet of the pumping device 60 extends to the bottom of the sump 20. The mounting pump platform 21 is protrudingly cast on the shield segment 10 to form a boss structure. The provision of the mounting pump platform 21 can facilitate the installation and assembly of the pumping device 60 and improve the convenience of use.

[0034] Further preferably, the shield segment 10 is partially sunken to form a deep water pit, which is located at the lowest point of the bottom of the sump 20. The deep water pit corresponds to the installation position of the pumping device 60, so that the pumping device 60 is located at the lowest point of the sump 20 and can fully discharge the accumulated water. The installation pump station 21 is set in the deep water pit to facilitate connection and partially strengthen the shield segment 10.

[0035] Furthermore, the shield segment 10 corresponding to the pumping device 60 is a steel segment or a concrete segment, and the surface and joint of the shield segment 10 are coated with waterproof material. Among them, the steel segment has high structural strength and is thinner than other concrete shield segments 10, so that a groove-shaped deep water pit is formed between the steel segment and two adjacent shield segments 10, which can not only realize the laying of the tunnel, but also automatically build a deep water pit, thereby improving the construction progress.

[0036] In a preferred embodiment, two or more pumping devices 60 are installed in the installation pump station 21, and the two pumping devices 60 can work independently or in combination. The tunnel built-in pump room system also includes a water level monitoring component, which is used to monitor the water level in the sump 20. The water level monitoring component is used to detect water levels at different heights in the sump 20 to prevent the water in the sump 20 from exceeding the standard.

[0037] The tunnel built-in pump room system controls one of the pumping devices 60 to drain water independently based on the water level monitoring signal of the water level monitoring component; or, the tunnel built-in pump room system controls two pumping devices 60 to drain water simultaneously based on the water level monitoring signal of the water level monitoring component. For example, when the water level monitoring component detects that the water level in the sump 20 reaches the drainage level, the tunnel built-in pump room system controls one pumping device 60 to pump water. When the amount of accumulated water inflow exceeds the discharge amount of one pumping device 60, and the water level monitoring component detects that the accumulated water in the sump 20 reaches the warning level, the tunnel built-in pump room system controls two pumping devices 60 to pump water simultaneously to improve drainage efficiency.

[0038] In a preferred embodiment, the pumping device 60 includes a pumping mechanism 61 and a crushing mechanism 62, the crushing mechanism 62 is connected to the bottom of the sump 20, the crushing mechanism 62 is provided with a rotating crushing knife, and the pumping mechanism 61 is connected to the chamber of the crushing mechanism 62. The pumping device 60 crushes the debris entering the crushing mechanism 62 by the crushing knife, reducing the damage probability of the pumping mechanism 61. Optionally, the crushing mechanism 62 is located at the bottom of the pumping mechanism 61 or the water inlet channel to crush and discharge the debris in the pumped accumulated water, and the operation stability is good.

[0039] Those skilled in the art will readily appreciate other embodiments of the present invention after considering the specification and practicing the disclosure disclosed herein. This application is intended to cover any variations, uses, or adaptations of the present invention, which follow the general principles of the present invention and include common knowledge or customary technical means in the art that are not disclosed in the present invention. The specification and examples are to be regarded as exemplary only, and the true scope and spirit of the present invention are indicated by the following claims.

[0040] It should be understood that the present invention is not limited to the precise structure described above and shown in the drawings, and various modifications and changes can be made without departing from the scope thereof. The scope of the present invention is limited only by the appended claims.

Claims

1. A tunnel built-in pump house system, wherein the wall of the tunnel is constructed with shield segments, a roadbed and a sump formed by a depression from the roadbed are arranged at the lower part of the tunnel, the sump extends along the axial direction of the tunnel, and at least one pumping device is installed in the sump, characterized in that: The tunnel built-in pump house system also includes a plurality of cover plate assemblies arranged at the opening of the sump, wherein the cover plate assemblies are provided with a plurality of exhaust holes distributed at intervals, and the plurality of exhaust holes connect the pit space of the sump and the space above the roadbed.

2. The tunnel built-in pump room system according to claim 1, characterized in that: The cover plate assembly includes a pit cover plate and a locking assembly for locking and connecting the pit cover plate, the locking assembly is fixed to the roadbed, and the exhaust hole passes through the pit cover plate.

3. The tunnel built-in pump room system according to claim 2, characterized in that: The exhaust holes are distributed in the pit cover in a mesh shape, and the exhaust holes are one or more of long holes, rectangular holes, and round holes.

4. The tunnel built-in pump room system according to claim 2, characterized in that: At least a portion of the pit cover is inserted into the sump.

5. The tunnel built-in pump room system according to claim 4, characterized in that: The pit cover includes a mesh portion and an assembly portion located on opposite sides of the mesh portion, the assembly portion is provided with a plurality of assembly holes passing therethrough, the locking assembly locks the pit cover to the roadbed through the assembly holes, the mesh portion is provided with exhaust holes distributed in a grid pattern, and an end portion of the mesh portion extends beyond the assembly portion and is inserted into the sump.

6. The tunnel built-in pump room system according to claim 1, characterized in that: At least one mounting pump platform is protruding from the bottom of the sump, and each of the pumping devices is installed on a corresponding mounting pump platform, and the water inlet of the pumping device extends to the bottom of the sump.

7. The tunnel built-in pump room system according to claim 6, characterized in that: Two or more pumping devices are installed in the installation pump platform, and the tunnel built-in pump room system also includes a water level monitoring component, and the water level monitoring component is used to monitor the water level in the sump. The tunnel built-in pump room system controls one of the pumping devices to drain water independently based on the water level monitoring signal of the water level monitoring component; or, the tunnel built-in pump room system controls two pumping devices to drain water simultaneously based on the water level monitoring signal of the water level monitoring component.

8. The tunnel built-in pump room system according to claim 7, characterized in that: The pumping device comprises a pumping mechanism and a crushing mechanism, wherein the crushing mechanism is communicated with the bottom of the sump, the crushing mechanism is provided with a rotating crushing knife, and the pumping mechanism is communicated with a chamber of the crushing mechanism.

9. The tunnel built-in pump room system according to claim 6, characterized in that: The shield segment is partially sunken to form a deep water pit, and the pumping device is installed in the deep water pit.

10. The tunnel built-in pump room system according to claim 9, characterized in that: The shield segments installed corresponding to the pumping device are steel segments or concrete segments, and the surfaces and joints of the shield segments are coated with waterproof materials.

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