Self-cleaning drainage device for water inrush and mud inrush treatment of deep underground engineering

Abstract

The invention discloses a self-cleaning drainage device, particularly discloses a self-cleaning drainage device for water inrush and mud inrush treatment of deep underground engineering, and belongs to the technical field of design and manufacturing of disaster treatment process equipment of deep underground engineering. The self-cleaning drainage device for the water inrush and mud inrush treatment of the deep underground engineering is good in drainage effect, and the service life is remarkably prolonged. The self-cleaning drainage device comprises a drainage structure, the self-cleaning drainage device further comprises a dredging and cleaning structure, the drainage structure is arranged in an excavated rock mass with the water inrush and mud inrush risk in front of a tunnel face, and the dredging and cleaning structure is movably arranged in the drainage structure; in the water inrush and mud inrush discharging process, mud and sand deposited in the drainage structure are thoroughly removed out of the drainage structure under the cooperation of the dredging and cleaning structure.

Description

Technical Field

[0001] The invention relates to a self-cleaning drainage device, in particular to a self-cleaning drainage device used for treating sudden water and mud in deep underground engineering, and belongs to the technical field of design and manufacturing of process equipment for treating disasters in deep underground engineering. Background Art

[0002] Terminology explanation:

[0003] Deep engineering: In the field of hydropower engineering, underground engineering with a depth of more than 600m is considered to be in the deep engineering field. It generally has a geological environment with high ground stress and high osmotic pressure, and water and mud burst disasters are prominent in fault fracture zones or crack-intensive zones;

[0004] Water and mud inrush: refers to the phenomenon that groundwater, mud and sand suddenly rush into the engineering space due to groundwater pressure or geological tectonic activities, which seriously threatens construction safety.

[0005] In deep underground projects (such as tunnels, mines, and hydropower chambers), water and mud inrush disasters are mainly caused by high water pressure, complex geological structures, and construction disturbances. Existing drainage technologies mainly rely on passive drainage systems, and their core means include: drainage holes / drainage pipes: PVC pipes or metal pipes are laid through drilling holes to guide groundwater out; drainage corridors: special drainage channels are excavated outside the project to reduce regional water pressure; water collection well pumping: groundwater is forcibly extracted using water pumps. However, as the project expands to deep and high-stress environments, traditional drainage technologies face the following limitations: Easy clogging: High-mud content water flows lead to siltation in drainage pipes, especially the plum blossom hole design of traditional PVC pipes is easily clogged by mud and sand, resulting in a sharp drop in drainage efficiency, with an actual lifespan of less than 3 months.

[0006] As mentioned above, the existing drainage for water and mud inrush prevention and control has the following problems: the drainage system is easily blocked and cannot cope with high mud content water flow; the sealing is easily ineffective in high pressure mud inrush environment, and the drainage efficiency is low; the existing drainage holes are difficult to clean and the maintenance cost is high. This can easily lead to poor drainage effect for water and mud inrush, causing potential harm to the construction and safe operation and maintenance of underground projects. Summary of the invention

[0007] The technical problem to be solved by the present invention is to provide a self-cleaning drainage device for treating sudden water and mud in deep underground engineering, which has good drainage effect and significantly extended service life.

[0008] The technical solution adopted to solve the above technical problems is: a self-cleaning drainage device for the treatment of sudden water and mud in deep underground projects, including a drainage structure, the self-cleaning drainage device also includes a dredging and cleaning structure, the drainage structure is arranged in the excavated rock mass in front of the heading where there is a risk of sudden water and mud, and the dredging and cleaning structure is movably arranged in the drainage structure; during the discharge of sudden water and mud, the mud and sand deposited in the drainage structure are completely removed from the drainage structure with the cooperation of the dredging and cleaning structure.

[0009] Furthermore, the drainage structure at least includes a drainage and mud discharge hole drilled in the excavated rock mass in front of the face where there is a risk of sudden water and mud outburst, and the dredging and cleaning structure is arranged in the drainage and mud discharge hole movably along the length direction of the drainage and mud discharge hole.

[0010] A preferred embodiment of the above scheme is that the drainage structure also includes a drainage pipe, on the wall of which water holes arranged in a plum blossom shape are provided, and the unblocking and cleaning structure is movably arranged in the drainage and mud discharge hole along the length direction of the drainage pipe.

[0011] Furthermore, the blockage clearing and cleaning structure comprises a support and installation assembly and a blockage clearing and sand removal assembly, and the blockage clearing and sand removal assembly is movably arranged in the drainage and mud removal hole along the length direction through the support and installation assembly.

[0012] A preferred embodiment of the above scheme is that the support and mounting assembly includes a bearing and a support hole, the support hole is arranged on the end wall of the drain pipe at one end in the drain and mud discharge hole, and the blockage and sand removal assembly is movably arranged in the drain and mud discharge hole through the support hole and the bearing in cooperation with the drain pipe.

[0013] Furthermore, the blockage clearing and sand removal assembly includes a mounting rod, a sand cleaning and sand removal component group and a crank. The sand cleaning and sand removal component group is fixedly mounted on the mounting rod. Both ends of the mounting rod are movably arranged in the drain pipe through bearings and support holes respectively. The crank is fixedly connected to one end of the mounting rod located outside the drain pipe.

[0014] A preferred embodiment of the above scheme is that the mounting rod and the crank handle are an integrated structure.

[0015] Furthermore, the sand cleaning and discharge component group is composed of a spiral brush fixedly mounted on the mounting rod.

[0016] A preferred embodiment of the above scheme is that the sand cleaning and sand discharging component group is composed of spiral blades fixedly mounted on the mounting rod.

[0017] Furthermore, the drainage pipe is made of a PVC pipe or a thin-walled steel plate, a water hole is also arranged on the end wall of the drainage pipe at one end in the drainage and mud discharge hole, and a spiral brush drainage channel is also arranged on the spiral brush.

[0018] The beneficial effects of the present invention are as follows: the technical solution provided by the present application is based on the existing drainage structure, and the self-cleaning drainage device of the present application is formed by adding a clearing and unblocking structure, and then the clearing and unblocking structure is arranged in the drainage structure in combination with the arrangement characteristics of the drainage structure in the excavated rock mass with the risk of sudden water and mud in front of the face; thus, in the process of sudden water and mud discharge, the mud and sand deposited in the drainage structure are completely removed from the drainage structure with the cooperation of the clearing and unblocking structure. This not only solves the technical problem of easy blockage when draining water through ordinary PVC pipes or metal pipes in the prior art, but also because the self-cleaning drainage device of the present application can discharge the mud and sand deposited in the drainage structure through the clearing and unblocking structure at any time to keep the drainage structure unobstructed, thereby effectively improving the drainage effect and significantly extending the service life of the drainage structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic structural diagram of the self-cleaning drainage device for treating sudden water and mud in deep underground engineering of the present invention arranged in a deep underground engineering;

[0020] Figure 2 It is a schematic cross-sectional view of the structure of the self-cleaning drainage device for treating water and mud inrush in deep underground engineering according to the present invention;

[0021] Figure 3 , Figure 4 They are Figure 2 AA and BB cross-sectional views.

[0022] Marked in the figure are: drainage and mud discharge hole 1, drainage pipe 2, water hole 3, bearing 4, mounting rod 5, sand cleaning and sand discharge component group 6, crank 7, spiral brush drainage channel 8. DETAILED DESCRIPTION

[0023] like Figure 1 , Figure 2 , Figure 3 as well as Figure 4The self-cleaning drainage device provided by the present invention has good drainage effect and significantly extended service life, and is used for the treatment of sudden water and mud in deep underground projects. The self-cleaning drainage device includes a drainage structure, and the self-cleaning drainage device also includes a dredging and cleaning structure. The drainage structure is arranged in the excavated rock mass in front of the face where there is a risk of sudden water and mud, and the dredging and cleaning structure is movably arranged in the drainage structure; during the drainage of sudden water and mud, the mud and sand deposited in the drainage structure are completely removed from the drainage structure with the cooperation of the dredging and cleaning structure. The technical solution provided by the present application is based on the existing drainage structure, and the self-cleaning drainage device of the present application is formed by adding a dredging and cleaning structure, and then the dredging and cleaning structure is movably arranged in the drainage structure in combination with the arrangement characteristics of the drainage structure in the excavated rock mass in front of the face where there is a risk of sudden water and mud. In this way, during the drainage of sudden water and mud, the mud and sand deposited in the drainage structure are completely removed from the drainage structure with the cooperation of the dredging and cleaning structure. This not only solves the technical problem of easy blockage when draining water through ordinary PVC pipes or metal pipes in the prior art, but also because the self-cleaning drainage device of the present application can discharge the mud and sand deposited in the drainage structure through the unblocking and cleaning structure at any time to keep the drainage structure unobstructed, thereby achieving the purpose of effectively improving the drainage effect and significantly extending the service life of the drainage structure. According to the prior art, the drainage structure of the present application at least includes a drainage and mud discharge hole 1 drilled in the excavated rock mass in front of the face where there is a risk of sudden water and mud, and the unblocking and cleaning structure is arranged in the drainage and mud discharge hole 1 along the length direction of the drainage and mud discharge hole. Preferably, the drainage structure also includes a drainage pipe 2, and a plum blossom-shaped water-passing hole 3 is provided on the pipe wall of the drainage pipe 2. The unblocking and cleaning structure is arranged in the drainage and mud discharge hole 1 along the length direction of the drainage and mud discharge hole through the drainage pipe 2. At this time, the drainage pipe 2 is composed of a PVC pipe or a thin-walled steel plate.

[0024] Accordingly, in combination with the actual situation on site, and in order to simplify the structure of the improved unblocking and cleaning structure of the present application, and to facilitate manufacturing, on-site installation and subsequent use, the unblocking and cleaning structure of the present application includes a support and installation assembly and an unblocking and sand removal assembly, and the unblocking and sand removal assembly is movably arranged in the drainage and mud discharge hole 1 along the length direction through the support and installation assembly. At this time, the support and installation assembly includes a bearing 4 and a support hole, and the support hole is arranged on the end wall of the drain pipe 2 at one end in the drainage and mud discharge hole 1, and the unblocking and sand removal assembly is movably arranged in the drainage and mud discharge hole 1 through the support hole and the bearing 4 in cooperation with the drain pipe 2. The unblocking and sand removal assembly includes a mounting rod 5, a sand removal and sand removal component group 6 and a crank 7, and the sand removal and sand removal component group 6 is fixedly mounted on the mounting rod 5, and the two ends of the mounting rod 5 are movably arranged in the drain pipe 2 through the bearing 4 and the support hole, and the crank 7 is fixedly connected to one end of the mounting rod 5 located outside the drain pipe 2. The preferred mode is that the mounting rod 5 and the crank 7 are an integrated structure. According to the underground seepage that needs to be drained, the sand cleaning and sand discharge component group 6 of the present application can be composed of a spiral brush fixedly mounted on the mounting rod 5, or the sand cleaning and sand discharge component group 6 can be composed of a spiral blade fixedly mounted on the mounting rod 5. Further, in order to ensure the smooth drainage to the greatest extent, a water hole 3 is also provided on the end wall of the drainage pipe 2 at one end of the drainage and mud discharge hole 1, and a spiral brush drainage channel 8 is also provided on the spiral brush.

[0025] In summary, the above technical solution provided by the application also has the following advantages:

[0026] 1. The drainage hole with self-cleaning function can solve the problem of blockage of traditional drainage holes;

[0027] 2. The built-in self-cleaning spiral brush is detachable and reusable. It can drain water efficiently while reducing the cost of dealing with sudden water and mud.

[0028] The technical solution of the present application is further described below through specific embodiments:

[0029] Embodiment 1

[0030] The purpose of this application is to provide a low-cost, anti-blocking, and efficient drainage self-cleaning drainage device for deep underground engineering water and mud burst prevention and control. A detachable self-cleaning spiral brush is used to solve the problem of sediment blockage in the drainage hole, and to achieve efficient and low-cost drainage of the water and mud burst tunnel section. First, radial drainage holes are arranged in front of the underground engineering construction face; PVC drainage pipes with drainage channels are installed in the drainage holes; after completion, a self-cleaning spiral brush is arranged in the PVC pipe, and fixed at the orifice with a load-bearing bearing, so as to realize the discharge of groundwater in the water and mud burst tunnel section.

[0031] In specific implementation, the deep underground engineering water and mud sudden discharge device of the present invention includes the following steps:

[0032] ① For deep underground projects, determine the locations where sudden water and mud disasters are likely to occur through advance forecasting and other means;

[0033] ② When the advanced geological forecast shows that there is a sudden water and mud disaster ahead, radial drainage drilling is carried out in front of the tunnel face;

[0034] ③ Process PVC drainage pipes and process plum blossom-shaped holes on the surface to enhance drainage effect;

[0035] ④ Place the PVC drainage pipe equipped with the optical fiber sensor into the radial drainage drilled hole;

[0036] ⑤After installation, install a self-cleaning spiral brush in the PVC pipe to prevent silt blockage and achieve groundwater self-drainage;

[0037] ⑥After installing the self-cleaning spiral brush, pass the load-bearing bearing through the hole to fix the self-cleaning spiral brush;

[0038] ⑦ After successfully passing the water and mud bursting tunnel section, remove the self-cleaning spiral brush;

[0039] ⑧Repeat steps ① to ⑥ to drain the next water and mud bursting hole section.

Claims

1. A self-cleaning drainage device for treating water and mud inrush in deep underground engineering, comprising a drainage structure, characterized in that: The self-cleaning drainage device also includes a dredging and cleaning structure. The drainage structure is arranged in the excavated rock mass in front of the face where there is a risk of sudden water and mud. The dredging and cleaning structure is movably arranged in the drainage structure. During the drainage of sudden water and mud, the mud and sand deposited in the drainage structure are completely removed from the drainage structure with the cooperation of the dredging and cleaning structure.

2. The self-cleaning drainage device for treating water and mud inrush in deep underground engineering according to claim 1 is characterized by: The drainage structure at least comprises a drainage and mud discharge hole (1) drilled in the excavated rock mass in front of the face where there is a risk of sudden water and mud outburst, and a dredging and cleaning structure is movably arranged in the drainage and mud discharge hole (1) along the length direction of the drainage and mud discharge hole.

3. The self-cleaning drainage device for treating sudden water and mud in deep underground engineering according to claim 2 is characterized in that: The drainage structure also includes a drainage pipe (2), on the pipe wall of which water holes (3) arranged in a plum blossom shape are provided, and the unblocking and cleaning structure is movably arranged in the drainage and mud discharge hole (1) along the length direction of the drainage and mud discharge hole through the drainage pipe (2).

4. The self-cleaning drainage device for treating water and mud inrush in deep underground engineering according to claim 2 or 3, characterized in that: The blockage clearing and cleaning structure comprises a support and installation assembly and a blockage clearing and sand removal assembly, and the blockage clearing and sand removal assembly is movably arranged in a drainage and mud removal hole (1) along a length direction through the support and installation assembly.

5. The self-cleaning drainage device for treating water and mud inrush in deep underground engineering according to claim 4 is characterized in that: The support installation assembly comprises a bearing (4) and a support hole. The support hole is arranged on an end wall of a drain pipe (2) located inside a drain and mud discharge hole (1). The blockage and sand discharge assembly is movably arranged in the drain and mud discharge hole (1) through the support hole and the bearing (4) in cooperation with the drain pipe (2).

6. The self-cleaning drainage device for treating water and mud inrush in deep underground engineering according to claim 5 is characterized by: The blockage clearing and sand discharge component comprises a mounting rod (5), a sand clearing and sand discharge component group (6) and a crank (7); the sand clearing and sand discharge component group (6) is fixedly mounted on the mounting rod (5); both ends of the mounting rod (5) are movably arranged in the drainage pipe (2) through bearings (4) and support holes respectively; and the crank (7) is fixedly connected to one end of the mounting rod (5) located outside the drainage pipe (2).

7. The self-cleaning drainage device for treating water and mud inrush in deep underground engineering according to claim 6 is characterized by: The mounting rod (5) and the crank handle (7) are an integrated structure.

8. The self-cleaning drainage device for treating sudden water and mud in deep underground engineering according to claim 7 is characterized by: The sand cleaning and sand discharging component group (6) is composed of a spiral brush fixedly mounted on the mounting rod (5).

9. The self-cleaning drainage device for treating water and mud inrush in deep underground engineering according to claim 7, characterized in that: The sand cleaning and discharge component group (6) is composed of spiral blades fixedly mounted on the mounting rod (5).

10. The self-cleaning drainage device for treating sudden water and mud in deep underground engineering according to claim 8, characterized in that: The drainage pipe (2) is made of a PVC pipe or a thin-walled steel plate. A water hole (3) is also provided on the end wall of the drainage pipe (2) at one end of the drainage and mud discharge hole (1). The spiral brush is also provided with a spiral brush drainage channel (8).

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