Layered desilting gate of deep tunnel drainage system and desilting method

Abstract

The invention discloses a layered desilting gate of a deep tunnel drainage system and a desilting method.The desilting gate comprises multiple gate assemblies arranged along the section of a tunnel, the multiple gate assemblies are sequentially arranged in the vertical direction, every two adjacent gate assemblies make contact with each other, and the multiple gate assemblies are arranged in the vertical direction; each group of gate assembly comprises two desilting gate plates movably connected with the tunnel structure wall, each desilting gate plate is further connected with a driving piece so as to drive the two desilting gate plates in the same group of gate assembly to be close to each other or separated from each other, and when the desilting gate plates are in lap joint with each other, the desilting gate plates are in lap joint with each other. The desilting gate plates of every two adjacent gate assemblies are located on the same face to form a layered desilting gate, and a gap exists between the layered desilting gate and the bottom of the tunnel. High water level difference is formed in the tunnel, high-speed water flow generated at the bottom of the tunnel is used for washing deposited sludge, the dredging effect is good, meanwhile, operators and machines do not need to go down to a well for operation, and safety risks are avoided.

Description

Technical Field

[0001] The present invention belongs to the technical field of urban deep drainage systems, and in particular relates to a layered desilting gate and a desilting method for a deep tunnel drainage system. Background Art

[0002] As a gray sponge technology measure, urban deep tunnel drainage systems are primarily responsible for collecting rainwater and sewage from shallow urban pipe networks and transporting them to downstream rivers or sewage treatment plants through large-section water transmission tunnels. The transported rainwater and sewage contain a large amount of solid particles and impurities. After a series of transport, suspension, sedimentation, and erosion, a large amount of solid particles settle in the deep tunnel system, forming sediment or silt. Sediment deposited at the bottom of tunnels reduces the transmission capacity of deep tunnel drainage systems, deteriorates the receiving water quality, and increases operation and maintenance costs, seriously impacting the normal operation of urban deep tunnel drainage systems. To maintain the long-term cleanliness of the tunnel interior, traditional desilting methods, often involving manual and mechanical operations, are often used. This is time-consuming, labor-intensive, and poses certain safety risks. For example, Chinese invention patent CN202210593668.6 discloses a deep tunnel pump station dredging system and dredging method. The dredging system includes a dredging robot, a control unit, and a hoisting unit. The dredging system also includes a middle-layer sedimentation unit and a middle-layer sludge suction unit. The dredging robot includes a walking unit, a suspension system fixedly connected to the walking unit, and a fuselage body fixedly connected to the suspension system through a frame. The fuselage body also includes a sludge shoveling and suction system located at the front end of the body and a control system electrically connected to the walking unit and the sludge shoveling and suction system. The control system is electrically connected to the control unit through a cable. The sludge shoveling and suction system includes a bucket and a sewage suction pipe fixed on the bucket. The sewage suction pipe is connected to the middle-layer sedimentation unit of the sludge suction pump fixed to the deep tunnel pump. The station inner wall, the middle silt suction unit is a sewage suction truck, which includes a vacuum pump, a connecting pipe and a sewage suction head. The sewage suction head is placed at the bottom of the box of the middle sedimentation unit to realize unmanned and non-stop silt removal of the deep tunnel pump station. That is, a complete set of silt removal technology of "silt removal robot + high-lift sewage suction truck" is adopted. The sediment at the bottom of the tunnel is first loosened by the bucket in front of the silt removal robot, and then the silt suction system of the silt removal robot transports these sediments to the middle sedimentation unit. Finally, the silt in the middle sedimentation unit is sucked to the ground by the sewage suction truck for drying treatment, thereby realizing the cleaning of the silt at the bottom of the deep tunnel. The silt removal operation plan is complicated, the silt removal effect of the robot is not good, and divers are required to go down the well to cooperate with the operation, which has certain safety risks. For example, Chinese utility model patent CN211500718U discloses a deep drainage and storage tunnel anti-siltation and convenient mechanical clearing section, including a deep drainage and storage tunnel section. The deep drainage and storage tunnel section includes a concrete platform arranged at the bottom of the tunnel, a diversion trough is provided in the middle of the concrete platform, and wiring pipes are pre-buried inside the concrete platform, that is, the silt deposited in the deep tunnel is concentrated in the diversion trough, and the silt in the diversion trough is cleaned by a dredging vehicle. On the one hand, this scheme changes the cross-sectional form of the deep tunnel, which is not conducive to the medium transmission of the deep tunnel drainage system. On the other hand, the dredging process requires people and vehicles to go down the well to operate, and it is also necessary to cut off the flow upstream of the deep tunnel. The procedure is complicated and there are major safety hazards. It is time-consuming and labor-intensive, and is not conducive to the safe and stable operation of the deep tunnel drainage system. Summary of the Invention

[0003] The purpose of the present invention is to overcome the defects of the existing technology and provide a layered silt removal gate and silt removal method for a deep tunnel drainage system. By forming a high water level difference in the tunnel, the high-speed water flow generated at the bottom of the tunnel is used to flush the deposited silt, which has a good silt removal effect. At the same time, there is no need for operators and machinery to go down the well to work, thus avoiding safety risks.

[0004] The object of the present invention is achieved through the following technical solutions: A layered desilting gate for a deep tunnel drainage system, comprising a plurality of gate assemblies arranged along a tunnel cross section, the plurality of gate assemblies being arranged sequentially in a vertical direction, with two adjacent groups of gate assemblies in contact with each other, each group of gate assemblies comprising two desilting gate plates respectively movably connected to a tunnel structure wall, each of the desilting gate plates being further connected to a driving member to drive the two desilting gate plates in the same group of gate assemblies toward or away from each other, the two desilting gate plates in the same group of gate assemblies being able to overlap each other when approaching each other, and when the desilting gate plates overlap each other, the desilting gate plates of the two adjacent groups of gate assemblies are on the same surface to form a layered desilting gate, with a gap between the layered desilting gate and the tunnel bottom to form a flushing channel; Through this implementation, multiple groups of gate assemblies are used to block the flow of the tunnel, forming a high water level difference before and after it, and using water pressure to clear the silt at the bottom of the tunnel. At the same time, multiple groups of gates are independently controlled, and the height of the flushing channel and the water level height upstream of the gate can be adjusted as needed, so that the operator can make adjustments according to the needs of different dredging cycles. There is no need for manual labor or mechanical operation robots to go down the well, which greatly improves the safety of dredging operations in the deep drainage system.

[0005] In one embodiment, one end of the silt removal gate plates that is overlapped with each other extends horizontally along the water flow direction to be movably connected to the tunnel structure wall.

[0006] In one embodiment, one end of the desilting gate plate is movably connected to the tunnel structure wall via a fixed rotating shaft, and the other end is connected to the driving member via a movable hinge support.

[0007] In one embodiment, the driving member is a hydraulic rod, and one end of the hydraulic rod away from the desilting gate plate is connected to the tunnel structure wall through a fixed hinge support.

[0008] In one embodiment, the ends of the two desilting gate plates in each group of the gate assemblies that are close to each other respectively have a tenon structure and a tongue-and-groove structure that fit together.

[0009] In one embodiment, the output end of the hydraulic rod is connected to the plate surface of the desilting gate plate.

[0010] In one embodiment, a receiving groove for receiving the hydraulic rod is provided on the tunnel structure wall, so that the hydraulic rod can rotate around the fixed hinge support.

[0011] In one embodiment, the desilting gate plate is a rectangular structure.

[0012] The present invention also provides a desilting method for a deep tunnel drainage system, comprising: Multiple groups of gate assemblies are set up in the tunnel along the cross-section of the tunnel. Each group of gate assemblies can form a blocking structure to cut off the water flow. Multiple groups of blocking structures are on the same surface to form a dredging gate. There is a gap between the dredging gate and the bottom of the tunnel to form a water level difference upstream and downstream of the dredging gate and flush the silt at the bottom of the tunnel.

[0013] In one embodiment, it further includes: A gate assembly is formed by using two dredging gate plates. One end of the dredging gate plate is movably connected to the tunnel structure wall, and the other end is connected to the driving member. Under the action of the driving member, the ends of the two dredging gate plates that are close to each other can overlap each other, and the ends of the dredging gate plates that can overlap each other extend horizontally along the water flow direction to be movably connected to the tunnel structure wall.

[0014] The beneficial effects of the present invention are: (1) The present invention sets a layered desilting gate in the tunnel, and uses a hydraulic rod to remotely drive the desilting gate plate, eliminating the need for manual labor and mechanical operation robots to go down the well, thereby greatly improving the safety of desilting operations in deep drainage systems. The two desilting gate plates in the same group of gate assemblies can gradually approach each other under the drive of the hydraulic rod and be fastened together through a mortise and tenon structure to form a layer of blocking surface, and the blocking surfaces of adjacent gate assemblies are coplanar, that is, the tunnel can be blocked by multiple groups of adjacent gate assemblies, so that a high water level difference is formed upstream and downstream, and the high water pressure upstream is used to clean the silt at the bottom of the tunnel. At the same time, each group of gates is independently controlled, and the height of the flushing channel and the water level upstream of the gate can be adjusted as needed, so that the operator can make adjustments according to the needs of different desilting cycles. (2) During the dredging process, it is only necessary to open the gate hydraulic press and remotely control the hydraulic rod to push the dredging gate plate. After the dredging gate plates on the same layer are overlapped with each other, the dredging gate plates are set along the direction of the water flow. Under the action of the water flow, the dredging gate plates on the same layer remain connected. The energy consumption is extremely low, and there is no need for personnel and machinery to cooperate in the operation. It is green, low-carbon and energy-saving. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The present invention will be described in more detail below based on embodiments and with reference to the accompanying drawings, wherein: Figure 1 A schematic diagram showing the structure of the layered desilting gate of the present invention when it is fully closed; Figure 2 A schematic diagram showing the structure of the layered desilting gate of the present invention when it is fully opened; Figure 3 A schematic diagram showing the structure of the layered desilting gate of the present invention when it is partially closed; Figure 4 A horizontal cross-sectional view of a group of gate assemblies of the present invention in a closed state is shown; Figure 5 A horizontal cross-sectional view of a group of gate assemblies of the present invention in an open state is shown; Figure 6 Shows a schematic diagram of the installation of the desilting gate plate of the present invention; In the drawings, like reference numerals are used for like parts, but the drawings are not necessarily true to scale.

[0016] Reference numerals: 1-desilting gate plate, 2-hydraulic rod, 3-fixed rotating shaft, 4-tunnel structure wall, 5-movable hinge support, 6-fixed hinge support, 7-gate tenon, 8-gate tenon groove, 9-flushing channel. DETAILED DESCRIPTION

[0017] The present invention will be further described below with reference to the accompanying drawings.

[0018] The present invention provides a layered desilting gate for a deep tunnel drainage system, such as Figures 1 to 4 As shown, it includes multiple groups of gate assemblies arranged along the tunnel cross-section, and the multiple groups of gate assemblies are arranged sequentially in the vertical direction. Adjacent groups of gate assemblies are in contact with each other. Each group of gate assemblies includes two dredging gate plates 1 movably connected to the tunnel structure wall 4 respectively. Each dredging gate plate 1 is also connected to a driving member to drive the two dredging gate plates 1 in the same group of gate assemblies to move closer to or separate from each other. The two dredging gate plates 1 in the same group of gate assemblies can overlap each other when approaching each other. When the dredging gate plates 1 overlap each other, the dredging gate plates 1 of the two adjacent groups of gate assemblies are on the same surface to form a layered dredging gate. There is a gap between the layered dredging gate and the bottom of the tunnel to form a flushing channel 9; It should be noted that, in deep drainage systems, dredging is currently often done by manual and mechanical operations, which is time-consuming and labor-intensive, and has potential safety hazards. In this embodiment, Figure 1 and Figure 2 As shown, a layered desilting gate is set in the tunnel, and the desilting gate plate 1 is remotely driven by a driving member, without the need for manual labor and mechanical operation robots to go down the well, which greatly improves the safety of desilting operations in the deep drainage system. The two desilting gate plates 1 in the same group of gate components can gradually approach and overlap each other under the drive of the driving member to form a layer of blocking surface, and the blocking surfaces of adjacent gate components are coplanar, that is, the tunnel can be blocked by multiple groups of adjacent gate components, so that a high water level difference is formed between the upstream and downstream, and the high water pressure from the upstream is used to clean the silt at the bottom of the tunnel. At the same time, each group of gates is independently controlled, as shown in FIG. Figure 3 As shown, the height of the flushing channel 9 and the water level upstream of the gate can be adjusted as needed, so that the operator can adjust according to the needs of different desilting cycles, and can also realize the function of automatic regulation of the upstream and downstream water levels of the deep tunnel drainage system; Specifically, if Figures 4 to 6 As shown, one end of the dredging gate plate 1 is movably connected to the tunnel structure wall 4 through a fixed rotating shaft 3, and the other end is connected to the driving member through a movable hinge support 5. The driving member is a hydraulic rod 2. The end of the hydraulic rod 2 away from the dredging gate plate 1 is connected to the tunnel structure wall 4 through a fixed hinge support 6. The ends of the two dredging gate plates 1 in each gate assembly that are close to each other are respectively provided with a gate tenon 7 and a gate groove 8 that cooperate with each other; It should be noted that a receiving groove for accommodating the hydraulic rod 2 is provided on the tunnel structure wall 4, so that the hydraulic rod 2 can rotate around the fixed hinge support 6. Figure 2As shown, during the normal transmission process of the deep tunnel drainage system, the layered desilting gate is in a fully open state. At this time, the desilting gate plate 1 is close to the tunnel structure wall 4, and the water flows normally through the gate without being affected. When sediment or silt accumulates at the bottom of the deep tunnel drainage system, that is, when desilting is required, the hydraulic rod 2 is activated to close the gate assembly, as shown in FIG. Figure 1 and Figure 4 As shown, the tenon of one silt removal gate plate 1 is interlocked with the tenon-groove structure of the other silt removal gate plate 1 to form a structurally stable blocking surface. The water level upstream of the blocking surface continues to rise, forming a high-speed water flow flowing out of the flushing channel 9, which forms a violent scouring effect on the sediment at the bottom of the deep tunnel, and continuously flushes these sediments to the downstream of the deep tunnel drainage system, and then is uniformly processed by the dredge pump. This self-cleaning method can not only clean the sediment at the bottom of the tunnel, but also does not consume a lot of manpower and material resources. While ensuring the safe and stable operation of the deep tunnel drainage system, it is also green, low-carbon, energy-saving and environmentally friendly. In one embodiment, Figure 2 and Figure 4 As shown, one end of the dredging gate plates 1 that can overlap each other extends horizontally along the water flow direction to be movably connected to the tunnel structure wall 4. That is, after the dredging gate plates 1 on the same layer are overlapped with each other, the dredging gate plates 1 are arranged along the water flow direction. Under the action of the water flow, the dredging gate plates 1 on the same layer remain connected, with extremely low energy consumption, no need for personnel and machinery to cooperate in the operation, and green, low-carbon and energy-saving. Furthermore, the desilting gate plates 1 are rectangular structures, that is, the multi-layer gate assembly is a rectangular structure of different lengths, so that the desilting gate plates 1 are arranged sequentially along the inner wall of the circular cross section of the tunnel; The present invention also provides a desilting method for a deep tunnel drainage system, comprising: Multiple gate assemblies are arranged along the tunnel cross section. Each gate assembly can form a barrier structure to cut off the water flow. Multiple barrier structures are arranged on the same surface to form a dredging gate. A gap is formed between the dredging gate and the bottom of the tunnel to form a water level difference upstream and downstream of the dredging gate and flush the silt at the bottom of the tunnel. One end of the silt removal gate plate is movably connected to the tunnel structure wall, and the other end is connected to the driving member. Under the action of the driving member, the ends of the two silt removal gate plates that are close to each other can overlap each other, and the ends of the silt removal gate plates that can overlap each other extend horizontally along the water flow direction to be movably connected to the tunnel structure wall; It should be noted that multiple groups of gate assemblies are set in the tunnel along the cross-section of the tunnel. Each group of gate assemblies can form a blocking structure to cut off the water flow. Multiple groups of blocking structures are on the same surface to form a dredging gate. The water level upstream of the blocking structure continues to rise, forming a high-speed water flow flowing out of the flushing channel, which has a violent scouring effect on the sediments at the bottom of the deep tunnel. These sediments are continuously flushed to the downstream of the deep tunnel drainage system, and then uniformly processed by a sludge suction pump. This self-cleaning method can not only clean the sediments at the bottom of the tunnel, but also does not consume a lot of manpower and material resources. While ensuring the safe and stable operation of the deep tunnel drainage system, it is also green, low-carbon, energy-saving and environmentally friendly. At the same time, after the dredging gate plates on the same layer are overlapped with each other, the dredging gate plates are set along the direction of the water flow. Under the action of the water flow, the dredging gate plates on the same layer remain connected, and the energy consumption is extremely low.

[0019] In the description of the present invention, it should be understood that the terms "upper", "lower", "bottom", "top", "front", "back", "inside", "outside", "left", "right", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are 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 direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the present invention.

[0020] Although the present invention is described herein with reference to specific embodiments, it should be understood that these embodiments are merely illustrative of the principles and applications of the invention. It should be understood that many modifications may be made to the illustrative embodiments, and that other arrangements may be devised, without departing from the spirit and scope of the invention as defined by the appended claims. It should be understood that the various dependent claims and features described herein may be combined in ways other than those described in the original claims. It should also be understood that features described in conjunction with individual embodiments may be employed in conjunction with other described embodiments.

Claims

1. A layered desilting gate for a deep tunnel drainage system, characterized in that: It includes multiple groups of gate assemblies arranged along the tunnel cross-section, and the multiple groups of gate assemblies are arranged sequentially in the vertical direction. Adjacent groups of gate assemblies are in contact with each other. Each group of gate assemblies includes two dredging gate plates that are movably connected to the tunnel structure wall respectively. Each dredging gate plate is also connected to a driving member to drive the two dredging gate plates in the same group of gate assemblies to approach or separate from each other. The two dredging gate plates in the same group of gate assemblies can overlap each other when approaching each other. When the dredging gate plates overlap each other, the dredging gate plates of the two adjacent groups of gate assemblies are on the same surface to form a layered dredging gate. There is a gap between the layered dredging gate and the bottom of the tunnel to form a flushing channel.

2. The layered desilting gate of a deep tunnel drainage system according to claim 1, characterized in that: One end of the silt removal gate plates that is overlapped with each other extends horizontally along the direction of water flow to be movably connected to the tunnel structure wall.

3. The layered desilting gate of a deep tunnel drainage system according to claim 1, characterized in that: One end of the desilting gate plate is movably connected to the tunnel structure wall through a fixed rotating shaft, and the other end is connected to the driving member through a movable hinge support.

4. The layered desilting gate of a deep tunnel drainage system according to claim 3, characterized in that: The driving member is a hydraulic rod, and one end of the hydraulic rod away from the desilting gate plate is connected to the tunnel structure wall through a fixed hinge support.

5. The layered desilting gate of a deep tunnel drainage system according to claim 1, characterized in that: The ends of the two desilting gate plates in each group of the gate assemblies that are close to each other are respectively provided with a tenon structure and a tongue-and-groove structure that match each other.

6. The layered desilting gate of a deep tunnel drainage system according to claim 4, characterized in that: The output end of the hydraulic rod is connected to the plate surface of the silt removal gate plate.

7. The layered desilting gate of a deep tunnel drainage system according to claim 4, characterized in that: The tunnel structure wall is provided with an accommodating groove for accommodating the hydraulic rod, so that the hydraulic rod can rotate around the fixed hinge support.

8. The layered desilting gate of a deep tunnel drainage system according to claim 1, characterized in that: The desilting gate plate is a rectangular structure.

9. A method for desilting a deep tunnel drainage system, characterized in that: include: Multiple groups of gate assemblies are set up in the tunnel along the cross-section of the tunnel. Each group of gate assemblies can form a blocking structure to cut off the water flow. Multiple groups of blocking structures are on the same surface to form a dredging gate. There is a gap between the dredging gate and the bottom of the tunnel to form a water level difference upstream and downstream of the dredging gate and flush the silt at the bottom of the tunnel.

10. A desilting method for a deep tunnel drainage system according to claim 9, characterized in that: Also includes: A gate assembly is formed by using two dredging gate plates. One end of the dredging gate plate is movably connected to the tunnel structure wall, and the other end is connected to the driving member. Under the action of the driving member, the ends of the two dredging gate plates that are close to each other can overlap each other, and the ends of the dredging gate plates that can overlap each other extend horizontally along the water flow direction to be movably connected to the tunnel structure wall.

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