Side slope collapse prevention device for lead-zinc mine

Abstract

The utility model relates to a side slope collapse prevention device for a lead-zinc mine. The side slope collapse prevention device comprises a lead-zinc side slope, a bottom-layer iron gauze, a protection layer, an upper-layer iron gauze and a drainage groove. A plurality of fixing ground anchors which are arranged in an array mode are fixedly inserted into a mountain of the lead-zinc slope, and the bottom-layer iron gauze is connected with the fixing ground anchors in a winding mode to be laid and fixed to a slope body of the lead-zinc slope. Each grid on the bottom-layer iron gauze is filled with a protective layer, a vegetation groove is formed in the middle of each protective layer, the vegetation grooves are filled with nutrient soil, and lalang grass vegetation is planted in the nutrient soil of each vegetation groove; the upper-layer iron gauze is wound around the fixing ground anchors and is laid and fixed on the outer sides of the bottom-layer iron gauze and the protective layers; the drainage channel is arranged at the bottom of the lead-zinc slope, and the bottom side face of the drainage channel is connected with a water guide pipe. The device can effectively fix soil and control slope collapse and landslide. Through the imperata vegetation on the surface layer, the ecological restoration effect of the lead-zinc mine can be promoted. The drainage system can effectively prevent rainwater accumulation from affecting the slope stability of the lead-zinc mine.

Description

Technical Field

[0001] This utility model relates to the field of steep slope revegetation structure technology, specifically to a device for preventing slope collapse in lead-zinc mines. Background Technology

[0002] Mineral resources occupy a very important proportion of my country's economic system. Therefore, when efficiently mining lead and zinc resources, we should pay more attention to the environmental impact caused by the mining process. Restoring mining areas, simultaneously managing and controlling mining, and implementing controlled, institutionalized, and ecological mining practices are necessary approaches to mining. During the mining of lead and zinc resources, with the improvement of mining technology and engineering control measures, the depth of lead and zinc mine pits increases and the slopes become steeper. Many mining technology problems can lead to irreversible damage to the soil environment of lead and zinc mines.

[0003] The "A Device for Strengthening and Reinforcing Soft Rock Slopes in Open-Pit Mines," disclosed in application number "202021737836.7," includes a soft rock slope, a cement mortar layer, several rows of fixed anchor rods, compression nuts, weft wire ropes, and warp wire ropes. The soft rock slope is coated with a cement mortar layer, and several rows of fixed anchor rods are inserted along the sides of the top. The ends of the anchor rods extend outside the cement mortar layer and are screwed with compression nuts. The ends of the fixed anchor rods have vertically perpendicular through holes. The weft wire ropes are inserted laterally into the through holes at the ends of the anchor rods, and the compression nuts tighten them. The warp wire ropes are inserted longitudinally into the through holes at the ends of the anchor rods for fixation. This device can effectively prevent collapse caused by uneven stress in localized areas of the soft rock slope, ensuring the safety of mine personnel. However, in actual use, the device is susceptible to erosion and soaking by rainwater in long-term open-air environments, which can affect the stability of the device and the safety of lead-zinc mine slopes.

[0004] The "Ecological Greening and Anti-Collapse System for Steep Concrete Slopes" disclosed in application number "201822001709.X" includes a steep slope ecological vegetation concrete system and a steep slope topsoil fixing system. The steep slope ecological vegetation concrete system includes multiple planting pits dug on the original concrete slope, with a vegetation concrete layer on top of the planting pits. Multiple fixing devices perpendicular to the original concrete slope are installed within the vegetation concrete. The steep slope topsoil fixing system includes a topsoil layer laid on the vegetation concrete and anti-slide devices installed within the topsoil layer. It also includes multiple connecting devices connecting the fixing devices and the anti-slide devices. The fixing devices include an L-shaped protective net, multiple frames supporting the L-shaped protective net, and multiple anchor bolts fixing the L-shaped protective net and the frames. This device improves the stability and ecological function of the slope; however, in actual use, it may cause water accumulation in the topsoil layer and vegetation concrete layer, affecting plant growth and even triggering landslides. The construction process is also relatively cumbersome. Summary of the Invention

[0005] The purpose of this invention is to overcome the shortcomings of the existing technology and provide a device for preventing slope collapse in lead-zinc mines.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A device for preventing slope collapse in lead-zinc mines, characterized in that it includes a lead-zinc slope, a bottom wire mesh, a protective layer, an upper wire mesh, and a drainage ditch;

[0008] Multiple fixed anchors arranged in an array are inserted and fixed into the mountain body of the lead-zinc slope, and the bottom wire mesh is laid and fixed on the slope body of the lead-zinc slope by wrapping around each fixed anchor.

[0009] Each grid of the bottom wire mesh is filled with a protective layer, and the middle of the protective layer is a vegetation trough. The vegetation trough is filled with nutrient soil, and each vegetation trough is planted with Imperata cylindrica.

[0010] The upper wire mesh is laid and fixed on the outside of the lower wire mesh and each protective layer by wrapping around each fixed anchor. The meshes on the upper wire mesh and the lower wire mesh correspond one-to-one.

[0011] The drainage ditch is located at the bottom of the lead-zinc slope, with a filter screen installed at the open top of the drainage ditch and a water pipe connected to the bottom side of the drainage ditch.

[0012] The cross-section of the drainage channel is a trapezoid, wider at the top and narrower at the bottom.

[0013] The filter screen is attached to the top opening of the drainage trough by screws.

[0014] The water pipe is made of a flexible material.

[0015] The present invention, employing the above technical solution, has the following beneficial effects: This device combines a bottom layer of wire mesh, fixed anchors, an upper layer of wire mesh, and a protective layer to form a stable protective system, effectively preventing slope debris and soil from sliding down, thus improving slope stability. The circular holes in the protective layer are used to create vegetation troughs for planting Imperata cylindrica (white cogongrass), utilizing its extensive root system to stabilize the soil. It is also drought-resistant and resistant to heavy metal pollution, promoting ecological restoration in lead-zinc mines. The drainage system, formed by the combination of drainage channels, filters, and water pipes at the bottom of the slope, effectively guides rainwater and groundwater out of the slope, reducing the impact of water on the stability of lead-zinc mine slopes. Simultaneously, the filters intercept silt and debris, preventing blockage of the drainage channels and ensuring the normal operation of the drainage system. Attached Figure Description

[0016] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments:

[0017] Figure 1 This is a three-dimensional schematic diagram of the present invention;

[0018] Figure 2 This is a side sectional view of the present invention;

[0019] Figure 3 This is a schematic diagram of the drainage system. Detailed Implementation

[0020] like Figure 1-3 As shown, this utility model discloses a device for preventing slope collapse in lead-zinc mines, comprising a lead-zinc slope 1, a bottom wire mesh 3, a protective layer 4, an upper wire mesh 5, and a drainage ditch 6.

[0021] Multiple fixed anchors 2 arranged in an array are inserted and fixed into the mountain body of the lead-zinc slope 1 (after the lead-zinc mine slope is cleaned, several of the fixed anchors 2 are inserted into the slope mountain body in a regular manner). The bottom wire mesh 3 is wrapped around each fixed anchor 2 and laid and fixed on the slope body of the lead-zinc slope 1 to improve the stability of the slope and prevent gravel and soil from falling.

[0022] Each grid on the bottom wire mesh 3 is filled with a protective layer 4. In the center of the protective layer 4 is a vegetation trough 7, which is filled with nutrient soil. Each vegetation trough 7 is planted with Imperata cylindrica 8. The main components of the protective layer 4 are concrete, porous minerals and sand, and its surface shape is a square structure with a circular vegetation trough 7 in the center.

[0023] Seven days after the aforementioned protective layer 4 is poured and cured, nutrient soil is added to the vegetation trough 7. This ensures a tighter and more stable fit between the protective layer 4 and the slope, providing overall stability. The Imperata cylindrica vegetation 8 is planted in the vegetation trough 7. Its extensive root system extends into the slope of the lead-zinc mine, effectively stabilizing the soil. It is also drought-resistant, reducing labor costs, and has some tolerance to heavy metal contaminated soil, making it suitable for mine slope restoration. Furthermore, it promotes the recovery of the lead-zinc mine ecosystem, reducing the damage to the ecological environment caused by mining activities, aligning with the concept of green mine construction. By effectively preventing slope collapse and landslides in lead-zinc mines, safety hazards during production are reduced, ensuring normal production and indirectly improving the mine's economic benefits. Simultaneously, the ecological restoration function supports the sustainable development of the mine.

[0024] The upper wire mesh 5 is laid and fixed to the outside of the bottom wire mesh 3 and each protective layer 4 by wrapping around each fixed anchor nail 2. The meshes on the upper wire mesh 5 and the bottom wire mesh 3 correspond one-to-one. By laying the upper wire mesh 5, the surface gravel and soil can be further prevented from sliding down, and the device is tightly combined, making the entire lead-zinc mine slope more stable.

[0025] Drainage channel 6 is located at the bottom of the lead-zinc slope 1. The cross-section of drainage channel 6 is trapezoidal, wider at the top and narrower at the bottom, effectively guiding rainwater and groundwater out of the slope and reducing the impact of water on slope stability. A filter screen 61 is screwed to the open top of drainage channel 6 for easy disassembly and cleaning. It effectively intercepts mud and debris in rainwater, preventing clogging. A water guide pipe 62 is connected to the bottom side of drainage channel 6, guiding rainwater to the bottom of the slope. The water guide pipe 62 is made of a flexible material, adaptable to slope deformation and geological activity.

[0026] The specific embodiments of this utility model have been described above. However, those skilled in the art should understand that this is only an example. Those skilled in the art can make various changes or modifications to this embodiment without departing from the principle and essence of this utility model, but all such changes and modifications fall within the protection scope of this utility model.

Claims

1. A device for preventing slope collapse in a lead-zinc mine, characterized by: The lead-zinc slope comprises a slope body, a bottom wire mesh, a protective layer, an upper wire mesh and a drainage groove. A plurality of fixed anchor pegs are arranged in an array in the mountain body of the lead-zinc slope, and the bottom wire mesh is laid and fixed on the slope body of the lead-zinc slope by being wound around each fixed anchor peg. Each grid on the bottom wire mesh is filled with the protective layer, the middle of the protective layer is a vegetation groove, the vegetation groove is filled with nutrient soil, and each vegetation groove is planted with a Chinese sweetcane vegetation. The upper wire mesh is laid and fixed outside the bottom wire mesh and each protective layer by being wound around each fixed anchor peg, and the grids on the upper wire mesh and the bottom wire mesh correspond to each other. The drainage groove is arranged at the bottom of the lead-zinc slope, a filter screen is arranged at the top opening of the drainage groove, and a water guide pipe is connected to the side of the bottom of the drainage groove.

2. The device for preventing slope collapse in a lead-zinc mine according to claim 1, characterized in that: The cross section of the drainage groove is a trapezoid with the top larger than the bottom.

3. The device for preventing slope collapse in a lead-zinc mine according to claim 1, characterized in that: The filter screen is connected to the top opening of the drainage groove by screw locking.

4. The device for preventing slope collapse in a lead-zinc mine according to claim 1, characterized in that: The water guide pipe is made of soft material.

Images