CN217460624U

CN217460624U - Reinforced water guide structure for preventing mine side slope soil covering water and soil loss

Info

Publication number: CN217460624U
Application number: CN202221292096.XU
Authority: CN
Inventors: 王滔
Original assignee: Shaanxi Nuclear Industrial Engineering Investigation Institute Co ltd
Current assignee: Shaanxi Nuclear Industrial Engineering Investigation Institute Co ltd
Priority date: 2022-05-27
Filing date: 2022-05-27
Publication date: 2022-09-20
Anticipated expiration: 2032-05-27

Abstract

The utility model discloses a reinforced water guide structure for preventing water and soil loss of mine side slope covering soil, which comprises living willows arranged side by side at intervals, wherein the tips of the living willows and reinforcing steel nails are inserted into an original slope; a non-woven geotextile is wound between the living willow and the steel bar nail to form a flexible geotechnical isolation belt; slope-shaped medium fine sand is respectively piled up on two sides of the geotechnical isolation belt; the middle fine sand close to the upper side of the non-woven geotextile is embedded with a U-shaped plastic drainage ditch, the bottom of the U-shaped plastic drainage ditch is provided with a vertical drainage hole, the bottom of the vertical drainage hole is communicated with a plastic blind pipe, and the plastic blind pipe is vertically inserted into the middle fine sand; graded sand stones are arranged on the middle fine sand close to the other side of the non-woven geotextile; and covering soil can be filled on two sides of the medium fine sand, and the covering soil and the medium fine sand form a new slope surface. The utility model discloses ensured to cover in the accumulation body or excavate the ploughing on side slope surface and plant soil body stably, prevented that the surface soil from erodeing, the underground water source of conservation slope promotes the slope body stable, improves vegetation survival rate and ecological remediation effect.

Description

Reinforced water guide structure for preventing mine side slope soil covering water and soil loss

Technical Field

The utility model belongs to the technical field of soil erosion and water loss protector, specifically be the reinforcement water guide structure that prevents mine side slope earthing soil erosion and water loss.

Background

The ecological restoration of mines is currently carried out in a large range in the whole country, and the vegetation recovery is carried out mainly by taking measures of soil covering and greening for bare side slopes formed by mining and soilless side slopes formed by accumulating waste residues and waste rocks, so that the soil environment is restored, and a vegetation ecological system is formed. In arid and semiarid regions, rainfall is less but rainfall time is concentrated, a slope is easy to be washed by short-time strong rainfall, especially, the slope with the gradient more than 25 degrees is seriously washed and damaged by the concentrated rainfall, meanwhile, precious earth surface water resources formed by rainfall are lost, and soil moisture is not guaranteed after rainfall is finished, so that the survival rate of vegetation is low, and the maintenance cost is high. Therefore, in order to ensure the slope stability and prevent water and soil loss and to keep the underground water source, the slope must be scientifically and effectively protected and treated. The existing ecological protection technology mainly adopts the modes of plant slope protection, structural slope protection and comprehensive slope protection. The method is simple in construction and low in price, but has poor stability and anti-scouring capability, the ground surface is seriously damaged after rainfall, the original slope surface is naked after the soil covering loss, the plants lose the suitable soil, the water and soil loss is further aggravated, and the vicious circle is formed; the structure revetment mostly adopts structures such as a lead wire cage (gabion), a geogrid, masonry, concrete, reinforced concrete and the like to block, reinforce and back-press the side slope, but the structure revetment has high cost, low construction speed and poor coordination with the surrounding environment, cannot contain underground water, can possibly form new land damage, and is not green and environment-friendly; synthesize the bank protection and combine plant bank protection and structure bank protection, at structure bank protection upper portion or inside formation vegetation bank protection space, if the frame lattice beam + plant living bag, grid turn-up + plant the turf etc. can play better effect to the side slope stability, nevertheless unable water source of conserving, later stage maintenance is with great costs, and the sustainability is poor, is unfavorable for soil and water conservation and water source conservation for a long time.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a prevent reinforcement water guide structure of mine side slope earthing soil erosion and water loss, it is stable to ensure to cover the soil body of planting in the ploughing on accumulation body or excavation side slope surface, prevents that the surface soil from erodeing, and the slope underground water source is supported in the culvert, promotes the slope body stability, improves vegetation survival rate and ecological remediation effect.

The utility model discloses a first technical scheme who adopts is: the reinforcing structure for preventing the soil and water loss of the mine side slope comprises living willows arranged side by side at intervals, wherein the tips of the living willows and reinforcing steel nails are inserted into an original slope; a non-woven geotextile is wound between the living willow and the steel bar nail to form a flexible geotechnical isolation belt; a layer of geomembrane is laid on the slope surface of the original slope, and slope-shaped medium fine sand is piled on two sides of the geotechnical isolation belt respectively; the middle fine sand close to the upper side of the non-woven geotextile is embedded with a U-shaped plastic drainage ditch, the bottom of the U-shaped plastic drainage ditch is provided with a vertical drainage hole, the bottom of the vertical drainage hole is communicated with a plastic blind pipe, and the plastic blind pipe is vertically inserted into the middle fine sand; graded sand stones are arranged on the middle fine sand close to the other side of the non-woven geotextile;

and covering soil can be filled on two sides of the medium fine sand, and the covering soil and the medium fine sand form a new slope.

The utility model is also characterized in that,

and a high-elasticity oilcloth is arranged between the U-shaped plastic drainage ditch and the medium-fine sand, and the plastic blind pipe penetrates through the high-elasticity oilcloth and is inserted into the medium-fine sand.

The depth of the tip of the living willow inserted into the original slope is 0.5-1.0 m; the living willow is nailed and erected in parallel along the slope at a transverse distance of 5.0 m.

The thickness of the graded sand stone is 0.1cm, and the thickness of the medium fine sand 4 is 0.5-0.6 m.

Vertical drain holes of 40mm are reserved at the bottom of the U-shaped plastic drainage ditch at intervals of 1.0 m.

The diameter of the plastic blind pipe is 50 mm.

The utility model has the advantages that:

1. the utility model discloses a prevent that reinforcement water guide structure of mine side slope earthing soil erosion and water loss uses living willow and steel nail to mainly block steady slope load structure of soil, use the plastics escape canal, the plastics blind pipe is surface water supply groundwater transformation structure, use nonwoven geotechnological cloth, geomembrane and sand are compound water containing structure, a side slope earthing greening engineering for the ecological prosthetic of mine, it is stable to ensure to cover the soil body of planting of ploughing on accumulation body or excavation side slope surface, prevent that the surface soil from erodeing, keep up slope underground water source, promote slope body stability, improve vegetation survival rate and ecological remediation effect.

Drawings

FIG. 1 is a schematic view of the water-guiding structure for preventing the soil erosion and water loss of the mine side slope covering soil;

FIG. 2 is a side view of the water guide structure for preventing soil erosion and water loss of the mine side slope covering soil of the present invention;

fig. 3 is the utility model discloses prevent U type plastics escape canal structure chart in the reinforcement water guide structure of mine side slope earthing soil erosion and water loss.

In the figure: 1. living willow; 2. non-woven geotextile; 3. grading sandstone; 4. medium fine sand; 5. a U-shaped plastic drainage ditch; 6. high-elasticity tarpaulin; 7. a plastic blind pipe; 8. a geomembrane; 9. tamping clay blocks; 10. a steel bar nail.

Detailed Description

The technical solution of the present invention will be described clearly and completely with reference to the following embodiments, and it should be understood that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.

As shown in fig. 1-3, the reinforcing structure for preventing soil and water loss of mine side slope earth of the present invention comprises living willows 1 arranged side by side at intervals, wherein the tips of the living willows 1 and the reinforcing steel nails 10 are inserted into the original slope; a non-woven geotextile 2 is wound between the living willow 1 and the steel bar nail 10 to form a flexible geotechnical isolation belt; a layer of geomembrane 8 is laid on the slope surface of the original slope, and slope-shaped medium fine sand 4 is piled up on two sides of the geotechnical isolation belt respectively; wherein the fine medium sand close to the upper side of the non-woven geotextile 2 is embedded with a U-shaped plastic drainage ditch 5, the bottom of the U-shaped plastic drainage ditch 5 is provided with a vertical drainage hole, the bottom of the vertical drainage hole is communicated with a plastic blind pipe 7, and the plastic blind pipe 7 is vertically inserted into the fine medium sand; graded sandstone 3 is arranged on the middle fine sand close to the other side of the non-woven geotextile 2;

and covering soil can be filled on two sides of the medium fine sand 4, and the covering soil and the medium fine sand form a slope surface.

A high-elasticity oilcloth 6 is arranged between the U-shaped plastic drainage ditch 5 and the medium fine sand 4, and a plastic blind pipe 7 penetrates through the high-elasticity oilcloth 6 and is inserted into the medium fine sand.

The depth of the tip of the living willow 1 inserted into the original slope is 0.5-1.0 m; the willow 1 is nailed and erected in parallel along the slope at the interval of 5.0m in the transverse direction.

The thickness of the graded sand 3 is 0.1cm, and the thickness of the medium fine sand 4 is 0.5-0.6 m.

Adopting a U-shaped plastic drainage ditch on the surface layer of the slope to carry out ground surface grading water interception, and reserving 40mm vertical drainage holes at the bottom of the U-shaped plastic drainage ditch every 1.0 m; when the earth surface encounters strong rainfall to form surface runoff, surface water is collected in the trench when being transported to the plastic drainage ditch, water drainage holes at the bottom of the plastic drainage ditch quickly seep down to fine sand in the lower part to form an underground saturated water storage body, slowly and continuously seeps along a fine sand layer in the lower part of the non-woven geotextile, surface flowing water is converted into underground water, the underground water accumulated in the sand layer continuously seeps into the water body in the lower soil body after the rainfall is finished, the humidity of the soil body is ensured to be stable for a long time, water source supply of surface vegetation is continuously supplied, and the vegetation survival rate is improved.

Meanwhile, the living willow will survive under the nourishment of the sand layer water storage body to form a transverse willow blocking pile, so that the soil body of the side slope is further stabilized, and the side slope is greened. The multiple effects of stabilizing the side slope, fixing the soil for cultivating and planting on the ground surface, replenishing underground water for a long time, preventing soil erosion of surface soil, conserving water sources, improving the survival rate of vegetation and the like are achieved. When the earth surface is subjected to strong rainfall to form surface runoff, surface water is collected in the trench when being transported to the position of the plastic drainage ditch, rapidly infiltrates into fine sand in the lower part from drainage holes at the bottom of the plastic drainage ditch to form an underground saturated water storage body, slowly and continuously infiltrates along a sand layer at the lower part of the geotextile, surface running water is converted into underground water, and the underground water accumulated in the sand layer continuously diffuses towards the lower part after rainfall is finished.

The diameter of the plastic blind pipe 7 is 50 mm.

The utility model discloses a prevent that mine side slope earthing soil water and soil loss's reinforced structure forms the stand that lives through the mode of sharpening willow that will live, and the pointed end inserts original slope 0.5-1.0m, moves towards the nail along the slope according to horizontal 5.0 m's interval and stands, and the centre is strengthened fixedly with the steel bar nail. Winding non-woven geotextile on the willow and the steel bar nails to form a flexible geotechnical isolation belt; the upper side of the geotextile is provided with a medium-fine sand underground water culvert water storage body, and the bottom of the geotextile is prevented from vertically permeating by a geomembrane. The lower side of the geotextile adopts graded sandstone and medium fine sand to permeate fluid obliquely, the upper part is 0.1cm graded sandstone, and the lower part is 0.5-0.6m medium fine sand; a U-shaped plastic drainage ditch is adopted on the surface layer of the slope for ground surface grading water interception, a vertical drainage hole of 40mm is reserved at the bottom of the drainage ditch every 1.0m, a plastic blind pipe of 50mm is used for guiding the lower part of the drainage ditch into the ground, and overlapped high-elasticity oilcloth is used between the U-shaped plastic drainage ditch and the blind pipe to prevent sundries from being blocked and underground water from evaporating. When the earth surface is subjected to strong rainfall to form earth surface runoff, surface water is collected in a channel when the surface water is transported to a plastic drainage ditch, water drainage holes at the bottom of the plastic drainage ditch quickly seep down to fine sand in the lower part to form an underground saturated water storage body and slowly and continuously seep along a sand layer below the geotextile, surface running water is converted into underground water, the underground water accumulated in the sand layer continuously seeps into the lower soil body after the rainfall is finished, the humidity of the soil body is ensured to be stable for a long time, water source supply of the surface vegetation is continuously supplied, the vegetation survival rate is improved, meanwhile, the living willow survives under the nourishing of the sand layer water storage body to form a transverse willow blocking pile, the side slope soil body is further stabilized, and the side slope is greened. The multiple effects of stabilizing the side slope, fixing the soil for cultivating and planting on the ground surface, replenishing underground water for a long time, preventing soil erosion of surface soil, conserving water sources, improving the survival rate of vegetation and the like are achieved.

The structure is simple in structure, high in construction speed, the main material is a green material, the durability is good, the cost is low, the maintenance and maintenance workload at the later stage of the mine slope greening engineering is reduced, the slope gradient is greater than 25 degrees, the soil covering thickness is not greater than 1.5m, the surface soil water and soil loss can be effectively reduced in the mine slope greening engineering, the vegetation survival rate is increased, particularly, surface water can be effectively converted into underground water in a drought and rain-lacking area, a water source is conserved, and the sustainable internal circulation effect of the slope greening is achieved.

The foregoing is merely exemplary and illustrative of the structure of the invention, and various modifications, additions and substitutions as described in the detailed description may be made by those skilled in the art without departing from the structure or exceeding the scope of the invention as defined in the claims.

Claims

1. Prevent mine side slope earthing soil erosion and water guide structure of consolidating of soil erosion and water loss, its characterized in that: the rapid-repairing-type willow fixing device comprises living willows (1) which are arranged side by side at intervals, wherein the tips of the living willows (1) and steel bar nails (10) are inserted into an original slope; a non-woven geotextile (2) is wound between the living willow (1) and the steel bar nails (10) to form a flexible geotechnical isolation belt; slope-shaped medium fine sand (4) is piled up on two sides of the geotechnical isolation belt respectively; the middle fine sand close to the upper side of the non-woven geotextile (2) is embedded with a U-shaped plastic drainage ditch (5), the bottom of the U-shaped plastic drainage ditch (5) is provided with a vertical drainage hole, the bottom of the vertical drainage hole is communicated with a plastic blind pipe (7), and the plastic blind pipe (7) is vertically inserted into the middle fine sand; the medium fine sand close to the other side of the non-woven geotextile (2) is provided with graded sandstone (3);

and covering soil can be filled on two sides of the medium fine sand (4), and the covering soil and the medium fine sand form a new slope.

2. The water guide structure for reinforcing and preventing soil and water loss of mine slope covering soil according to claim 1, characterized in that: a high-elasticity oilcloth (6) is arranged between the U-shaped plastic drainage ditch (5) and the medium fine sand (4), and the plastic blind pipe (7) penetrates through the high-elasticity oilcloth (6) and is inserted into the medium fine sand.

3. The water guide structure for reinforcing and preventing soil and water loss of mine slope covering soil according to claim 1, characterized in that: the depth of the tip of the living willow (1) inserted into the original slope is 0.5-1.0 m; the willow (1) is arranged along the slope at a transverse distance of 5.0m in parallel and is nailed and erected.

4. The water guide structure for reinforcing and preventing soil and water loss of mine slope covering soil according to claim 1, characterized in that: the thickness of the graded sand stone (3) is 0.1cm, and the thickness of the medium fine sand (4) is 0.5-0.6 m.

5. The water guide structure for reinforcing and preventing soil and water loss of mine slope covering soil according to claim 1, characterized in that: and 40mm vertical drainage holes are reserved at the bottom of the U-shaped plastic drainage ditch at intervals of 1.0 m.

6. The reinforcing water guide structure for preventing the mine slope soil-covering water and soil loss according to claim 1, wherein the diameter of the plastic blind pipe (7) is 50 mm.

7. The reinforcing water guiding structure for preventing the mine slope soil-covering water and soil loss according to claim 1, wherein a layer of geomembrane (8) is further laid on the slope surface of the original slope, and the medium fine sand (4) and the soil-covering are laid on the geomembrane (8).