CN114606961A - Water and soil conservation method for hilly land - Google Patents
Water and soil conservation method for hilly land Download PDFInfo
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- CN114606961A CN114606961A CN202210370367.7A CN202210370367A CN114606961A CN 114606961 A CN114606961 A CN 114606961A CN 202210370367 A CN202210370367 A CN 202210370367A CN 114606961 A CN114606961 A CN 114606961A
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D17/00—Excavations; Bordering of excavations; Making embankments
- E02D17/20—Securing of slopes or inclines
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G17/00—Cultivation of hops, vines, fruit trees, or like trees
- A01G17/005—Cultivation methods
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G20/00—Cultivation of turf, lawn or the like; Apparatus or methods therefor
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G20/00—Cultivation of turf, lawn or the like; Apparatus or methods therefor
- A01G20/20—Cultivation on mats
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G23/00—Forestry
- A01G23/02—Transplanting, uprooting, felling or delimbing trees
- A01G23/04—Transplanting trees; Devices for grasping the root ball, e.g. stump forceps; Wrappings or packages for transporting trees
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G27/00—Self-acting watering devices, e.g. for flower-pots
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G27/00—Self-acting watering devices, e.g. for flower-pots
- A01G27/003—Controls for self-acting watering devices
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G9/00—Cultivation in receptacles, forcing-frames or greenhouses; Edging for beds, lawn or the like
- A01G9/02—Receptacles, e.g. flower-pots or boxes; Glasses for cultivating flowers
- A01G9/029—Receptacles for seedlings
- A01G9/0291—Planting receptacles specially adapted for remaining in the soil after planting
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- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F5/00—Sewerage structures
- E03F5/04—Gullies inlets, road sinks, floor drains with or without odour seals or sediment traps
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- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F5/00—Sewerage structures
- E03F5/10—Collecting-tanks; Equalising-tanks for regulating the run-off; Laying-up basins
- E03F5/101—Dedicated additional structures, interposed or parallel to the sewer system
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- Life Sciences & Earth Sciences (AREA)
- Environmental Sciences (AREA)
- Engineering & Computer Science (AREA)
- Water Supply & Treatment (AREA)
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- Public Health (AREA)
- Mining & Mineral Resources (AREA)
- Ecology (AREA)
- Forests & Forestry (AREA)
- Biodiversity & Conservation Biology (AREA)
- General Life Sciences & Earth Sciences (AREA)
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- General Engineering & Computer Science (AREA)
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- Cultivation Of Plants (AREA)
Abstract
The invention discloses a water and soil conservation method for a hilly land, which comprises a hilly body and is characterized in that: and carrying out engineering measures and biological measures on the hillside body. The beneficial effects are that: the sandstone water filtering layer and the retaining wall can prevent and filter redundant rainwater, then the redundant rainwater permeates into the underground drainage pipe and is stored in the water storage tank through the underground drainage pipe, the water storage tank has potential energy because the sea level of the water storage tank is higher than the pre-embedded water dropping pipe at the lower side of the retaining wall, and the water dropping pipe can be opened in the season with less rainfall, so that the water in the water storage tank is dropped to the lower sides of trees and vines through the water dropping pipe, a stable water-containing layer is formed at the lower sides of the trees and the vines, the growth stability of plants kept by water and soil is ensured, and the effect of keeping water and soil is ensured.
Description
Technical Field
The invention relates to the field of ecological restoration methods for rock mountain vegetation, and relates to a water and soil conservation method for hilly lands.
Background
Soil and water conservation is the work of preventing soil and water loss, protecting, improving and reasonably utilizing soil and water resources and establishing a good ecological environment. The comprehensive measures of agriculture, forestry, pasture, water conservancy and the like are applied, such as building terraced fields, carrying out equal-height tillage and strip planting, sealing mountains and cultivating forests, planting trees and planting grass, building check houses, pond dams, excavating ring ditches and the like, so that water sources are conserved, surface runoff is reduced, ground coverage is increased, soil erosion is prevented, and the comprehensive development of agriculture, forestry, pasture and subsidiary industry is promoted.
The existing hillside land water and soil conservation method is mostly a simple mode of planting trees and grass to store water and preserve soil for hillside soil, earth surface soil is still easy to mix rainwater to form debris flow to flow away when strong rainwater is washed, and further water and soil loss is caused.
Disclosure of Invention
The present invention has been made to solve the above problems, and an object of the present invention is to provide a method for retaining water and soil in a hilly land.
The invention realizes the purpose through the following technical scheme:
a water and soil conservation method for hilly lands comprises a hilly body, and is characterized in that: carrying out engineering measures and biological measures on the hillside, wherein:
A. the engineering measures comprise the following steps:
a1, excavating deep ditches along contour lines of a hillside body, wherein the width of each deep ditch is 3 meters, the depth of each deep ditch is 1.5 meters, excavating water storage tanks every 100 meters along the length direction of each deep ditch, and the drainage gradient of each deep ditch is 30%;
a2, building a retaining wall by using stones on one side of the deep groove far away from the top of the slope, wherein the retaining wall is of a structure with a narrow top and a wide bottom, and the width of the lower part of the retaining wall is 1 m;
a3, paving a sand-stone water filtering layer on one side, close to the top of the slope, in the deep groove, burying an underground drainage pipe, and finally covering the underground drainage pipe with the sand-stone water filtering layer, wherein a seepage hole is formed in the outer ring side of the underground drainage pipe;
a4, integrally molding a reservoir by pouring concrete, communicating an underground drain pipe with the reservoir, arranging a maintenance cover on the upper side of the reservoir, arranging a drain pipe on the bottom side of the interior of the reservoir to be connected with a drip pipe lower than an elevation area of a retaining wall, and ensuring that the water storage capacity of the reservoir is 10 cubic meters;
a5, excavating circular tree pits in the areas between the retaining walls, excavating narrow grooves between the tree pits, and arranging the narrow hook grooves in a staggered manner between the tree pits;
a6, vertically inserting a stick hedge partition wall into the narrow groove, and then laying a water dropping pipe on one side of the stick hedge partition wall to ensure that the water dropping pipe passes through each tree pit, wherein the thickness of the stick hedge partition wall is 100 mm.
B. The biological measures comprise the following steps:
b1, embedding degradable tree pit bags in the excavated tree pits, embedding tree roots into the tree pit bags, and embedding nutrient soil into the tree roots;
b2, climbing vine mansion plants on the partition wall of the stick hedge, burying the roots of the plants into the lower part of the partition wall of the stick hedge, and finally filling straws into gaps between the narrow grooves and the partition wall of the stick hedge;
b3, paving the degradable geogrid in the area where the trees are planted, sowing grass seeds in the degradable geogrid, and finally covering a protective soil layer and the comminuted plant fibers on the upper side of the degradable geogrid;
b4, sowing the seeds of the vine man plants for water storage on the upper side of the sandstone filtered water layer to ensure that the sandstone filtered water layer can be completely covered by the vine man plants for water storage.
Preferably, the diameter of the inside of the tree pit bag is 1 meter, the degradable geogrids are bound and connected with one another through iron wires, and the stick fence partition is of a grid structure.
Preferably, shrub plants are planted in the positions among the tree pit bags, and when the slope of the hillside is larger than 45 degrees, the drainage slope of the underground drainage pipe is 35%.
Preferably, the tree pit bags are spaced by 5 meters, the outer sides of the drip pipes are provided with drip holes, and the types of trees planted in the tree pit bags are determined according to local climate and local plants.
Preferably, when the slope of the hillside body is greater than 30 degrees and less than 45 degrees, the interval between the retaining walls is 50 meters, when the slope of the hillside body is greater than 45 degrees and less than 60 degrees, the interval between the retaining walls is 30 meters.
Preferably, when the hilly body is loose soil, the mesh size of the degradable geogrid is 15cm by 15cm, and reinforcing steel bars penetrate through the inner side of the retaining wall.
Preferably, a water level monitoring device is arranged on the inner side of the reservoir, a soil temperature and humidity sensor is embedded in the inner side of the tree pit bag, and the soil temperature and humidity sensor is connected with rear-end monitoring equipment.
Preferably, the uppermost layer of the sand-gravel water filtering layer is a mixed layer of sand and broken stones, the middle part of the sand-gravel water filtering layer is a mixed layer of large stones and sand, and the lowermost layer of the sand-gravel water filtering layer is a sand layer.
Preferably, the inner diameter of the water dropping pipe is 20mm, and the underground drainage pipe is formed by pouring concrete.
Preferably, the retaining wall is provided with separation seams every fifty meters.
The invention has the beneficial effects that:
1. according to the invention, the degradable geogrid, the tree pit bag, the vine plant and the stick fence partition wall are arranged on the hillside body, so that the surface soil of the hillside body is divided into square blocks, the soil in each square block is separated by the degradable geogrid, and the debris flow is prevented from flowing away when the hillside body is washed by rainwater;
2. the sandstone water filtering layer and the retaining wall can prevent and filter redundant rainwater, then penetrate into the underground drainage pipe, and are stored in the water storage tank through the underground drainage pipe, the water storage tank can enable the water body in the water storage tank to have potential energy because the sea level of the water storage tank is higher than the pre-buried water dropping pipe at the lower side of the retaining wall, and the water dropping pipe can be opened in the season with less rainfall, so that the water body in the water storage tank is dropped to the lower sides of trees and vines through the water dropping pipe, a stable water-containing layer is formed at the lower sides of the trees and vines, the growth stability of plants kept by water and soil is ensured, and the effect of keeping water and soil is ensured;
3. the stick fence partition wall and the tree pit bag can divide a hillside body into small spaces, so that the rapid loss of water in a soil layer of the hillside body is avoided, and the water retention capacity of the soil is improved.
Drawings
FIG. 1 is a view showing the structure of soil and water conservation of a rock mountain.
In the figure: 1. a hill body; 2. a retaining wall; 3. an underground drain pipe; 4. a sandstone water filtration layer; 5. a tree pit bag; 6. degradable geogrids; 7. a stick fence partition; 8. a water dropping pipe.
Detailed Description
The invention will be further described with reference to the accompanying figure 1:
a water and soil conservation method for a hilly land comprises a hilly body 1, wherein engineering measures and biological measures are carried out on the hilly body 1, and the method comprises the following steps:
A. the engineering measures comprise the following steps:
a1, excavating deep ditches along a contour line of 1 mountain slope, wherein the width of each deep ditch is 3 meters, the depth of each deep ditch is 1.5 meters, and excavating water storage tanks every 100 meters along the length direction of each deep ditch, wherein the drainage gradient of each deep ditch is 30%;
a2, building a retaining wall by using stones on one side of the deep groove far away from the top of the slope, wherein the retaining wall 2 is of a structure with a narrow top and a wide bottom, and the width of the lower part of the retaining wall 2 is 1 m;
a3, paving a sand-stone water filtering layer 4 on one side of the deep groove close to the top of the slope, burying an underground drain pipe 3, and finally covering the underground drain pipe 3 with the sand-stone water filtering layer 4, wherein the outer ring side of the underground drain pipe 3 is provided with a water seepage hole;
a4, integrally molding the reservoir by pouring concrete, wherein the underground drain pipe 3 is communicated with the reservoir, the upper side of the reservoir is provided with an inspection cover, the bottom side of the interior of the reservoir is provided with a drain pipe which is connected with a drip pipe 8 in an area lower than the elevation of the retaining wall 2, and the water storage capacity of the reservoir is 10 cubic meters;
a5, excavating circular tree pits in the area between the retaining walls 2, excavating narrow grooves between the tree pits, and arranging the narrow hook grooves in a staggered manner between the tree pits;
a6, vertically inserting a stick hedge partition 7 into a narrow groove, and then laying a water dropping pipe 8 on one side of the stick hedge partition 7 to ensure that the water dropping pipe 8 passes through each tree pit, wherein the thickness of the stick hedge partition 7 is 100 mm.
B. The biological measures comprise the following steps:
b1, embedding degradable tree pit bags 5 in the excavated tree pits, embedding tree roots into the tree pit bags 5, and embedding nutrient soil in the tree roots;
b2, climbing vine manplants on the partition wall 7 of the wooden stick fence, burying the roots of the plants into the lower part of the partition wall 7 of the wooden stick fence, and finally filling straws into gaps between the narrow grooves and the partition wall 7 of the wooden stick fence;
b3, paving the degradable geogrid 6 in the area where the trees are planted, sowing grass seeds in the degradable geogrid 6, and finally covering a protective soil layer and the comminuted plant fibers on the upper side of the degradable geogrid 6;
b4, sowing the seeds of the vine-man plants for water storage on the upper side of the sandstone filtered water layer 4 to ensure that the sandstone filtered water layer 4 can be completely covered by the vine-man plants for water storage.
In a preferred embodiment, the inner diameter of the tree pit bag 5 is 1 meter, the degradable geogrids 6 are bound and connected with each other through iron wires, the stick fence partition wall 7 is of a grid structure, the tree pit bag 5 can provide a storage space for nutrient soil at the root of a tree, the nutrient soil is prevented from being loosened, insufficient nutrient absorption of the tree is avoided, the stick fence partition wall 7 can enable surface soil to form grids, meanwhile, vines attached to the stick fence partition wall 7 can form a plant barrier wall after rapid growth, and the possibility that the soil layer flows along with wind is reduced.
As a preferred embodiment, shrub plants are planted between the tree pit bags 5, when the slope of the hill body 1 is greater than 45 degrees, the drainage slope of the underground drainage pipe 3 is 35%, and the drainage slope of the underground drainage pipe 3 can ensure that rainwater flows into the water collecting tank in time, so that rainwater is stored in time, and growth water is provided for seasons with less rainfall.
As a preferred embodiment, the distance between the tree pit bags 5 is 5 meters, the outer sides of the drip pipes 8 are provided with drip holes, the types of trees planted in the tree pit bags 5 are determined according to local climate and local plants, and the drip pipes 8 can ensure the water content of root parts of the trees and the vines, so that the growth quality of the plants is ensured.
As a preferred embodiment, when the slope of the slope body 1 is greater than 30 degrees and less than 45 degrees, the distance between the retaining walls 2 is 50 meters, and when the slope of the slope body 1 is greater than 45 degrees and less than 60 degrees, the distance between the retaining walls 2 is 30 meters, the retaining walls 2 can block soil in a debris flow from flowing away, and the distance between the retaining walls 2 can ensure the effect of water and soil conservation.
As a preferred embodiment, when the hillside body 1 is loose soil, the mesh size of the degradable geogrid 6 is 15cm by 15cm, reinforcing steel bars are arranged inside the retaining wall 2 in a penetrating manner, and the reinforcing steel bars arranged inside the retaining wall 2 can ensure the strength of the retaining wall 2.
As a preferred embodiment, a water level monitoring device is arranged on the inner side of the reservoir, a soil temperature and humidity sensor is embedded in the inner side of the tree pit bag 5 and is connected with a rear-end monitoring device, and the soil temperature and humidity sensor can monitor the soil temperature and humidity information of the hillside body in real time, so that information is provided for hillside water and soil conservation management personnel, corresponding treatment measures are taken in time, and the possibility of disaster occurrence is reduced.
As preferred embodiment, 4 superiors of grit filter layer are the mixture layer of grit and rubble, 4 middle parts of grit filter layer are the mixture layer of big stone and sand, 4 lower floor of grit filter layer are the sand bed, 4 can filter mud-water mixture, guarantee the rainwater can pass through in time collect the cistern in the underground drainage pipe 3, and then guarantee the recycle of rainwater.
In a preferred embodiment, the inner diameter of the drip pipe 8 is 20mm, the underground drainage pipe 3 is formed by pouring concrete, and the material of the underground drainage pipe 3 can ensure the strength and avoid damage.
As a preferred embodiment, the retaining wall 2 is provided with separating seams every fifty meters, and the retaining wall 2 can be prevented from being damaged due to stress difference due to the arrangement of the separating seams.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (10)
1. A hillside land water and soil conservation method comprises a hillside body (1) and is characterized in that: engineering measures and biological measures are carried out on the hilly body (1), wherein:
A. the engineering measures comprise the following steps:
a1, excavating a deep trench along a contour line equal to a hilly body (1), wherein the width of the deep trench is 3 meters, the depth of the deep trench is 1.5 meters, excavating water storage tanks every 100 meters along the length direction of the deep trench, and the drainage gradient of the deep trench is 30%;
a2, building a retaining wall by using stones on one side of the deep groove far away from the top of the slope, wherein the retaining wall (2) is of a structure with a narrow top and a wide bottom, and the width of the lower part of the retaining wall (2) is 1 m;
a3, paving a sand-stone water filtering layer (4) on one side of the deep groove close to the top of the slope, burying an underground drain pipe (3), and finally covering the underground drain pipe (3) with the sand-stone water filtering layer (4), wherein a water seepage hole is formed in the outer ring side of the underground drain pipe (3);
a4, integrally molding a reservoir by pouring concrete, wherein an underground drain pipe (3) is communicated with the reservoir, an inspection cover is arranged on the upper side of the reservoir, a drain pipe is arranged at the bottom side inside the reservoir and is connected with a water dropping pipe (8) in an area lower than the elevation of the retaining wall (2), and the water storage capacity of the reservoir is 10 cubic meters;
a5, excavating circular tree pits in the area between the retaining walls (2), excavating narrow grooves among the tree pits, and arranging the narrow hook grooves among the tree pits in a staggered manner;
a6, vertically inserting a stick hedge partition wall (7) into a narrow groove, and then laying a water dropping pipe (8) on one side of the stick hedge partition wall (7) to ensure that the water dropping pipe (8) passes through each tree pit, wherein the thickness of the stick hedge partition wall (7) is 100 mm.
B. The biological measures comprise the following steps:
b1, embedding degradable tree pit bags (5) in the excavated tree pits, embedding the tree roots into the tree pit bags (5), and embedding nutrient soil into the tree roots;
b2, climbing a vine man plant on the stick hedge partition wall (7), burying the root of the plant into the lower part of the stick hedge partition wall (7), and finally filling straw into a gap between the narrow groove and the stick hedge partition wall (7);
b3, paving the degradable geogrid (6) in the area where the trees are planted, sowing grass seeds in the degradable geogrid (6), and finally covering a protective soil layer and the comminuted plant fibers on the upper side of the degradable geogrid (6);
b4, sowing the seeds of the vine man plants for water storage on the upper side of the sandstone filtration layer (4) to ensure that the sandstone filtration layer (4) can be completely covered by the vine man plants for water storage.
2. The ecological restoration method for vegetation on rock mountain bodies according to claim 1, characterized in that: the inner diameter of the tree pit bag (5) is 1 meter, the degradable geogrids (6) are bound and connected through iron wires, and the stick fence partition (7) is of a grid structure.
3. The ecological restoration method for vegetation on rock mountain bodies according to claim 1, characterized in that: shrub plants are planted in the positions among the tree pit bags (5), and when the slope of the hillside body (1) is larger than 45 degrees, the drainage slope of the underground drainage pipe (3) is 35%.
4. The ecological restoration method for vegetation on rock mountain of claim 1, wherein the ecological restoration method comprises the following steps: the tree pit bag is characterized in that the distance between the tree pit bags (5) is 5 meters, water dripping holes are formed in the outer sides of the water dripping pipes (8), and the types of trees planted in the tree pit bags (5) are determined according to local climate and local plants.
5. The ecological restoration method for vegetation on rock mountain bodies according to claim 1, characterized in that: when the slope of the hillside body (1) is greater than 30 degrees and is less than 45 degrees, the interval between the retaining walls (2) is 50 meters, when the slope of the hillside body (1) is greater than 45 degrees and is less than 60 degrees, the interval between the retaining walls (2) is 30 meters.
6. The ecological restoration method for vegetation on rock mountain bodies according to claim 1, characterized in that: when the hillside body (1) is loose soil, the mesh size of the degradable geogrid (6) is 15cm by 15cm, and reinforcing steel bars penetrate through the inner side of the retaining wall (2).
7. The ecological restoration method for vegetation on rock mountain bodies according to claim 1, characterized in that: the water level monitoring device is arranged on the inner side of the water storage pool, a soil temperature and humidity sensor is buried in the inner side of the tree pit bag (5), and the soil temperature and humidity sensor is connected with rear-end monitoring equipment.
8. The ecological restoration method for vegetation on rock mountain bodies according to claim 1, characterized in that: the uppermost layer of the sandstone filtration layer (4) is a sand and gravel mixing layer, the middle part of the sandstone filtration layer (4) is a large stone and sand mixing layer, and the lowermost layer of the sandstone filtration layer (4) is a sand layer.
9. The ecological restoration method for vegetation on rock mountain bodies according to claim 1, characterized in that: the inner diameter of the water dripping pipe (8) is 20mm, and the underground drainage pipe (3) is formed by pouring concrete.
10. The ecological restoration method for vegetation on rock mountain bodies according to claim 1, characterized in that: and separation seams are arranged on the retaining wall (2) every fifty meters.
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| CN202210370367.7A CN114606961A (en) | 2022-04-09 | 2022-04-09 | Water and soil conservation method for hilly land |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115176622A (en) * | 2022-07-31 | 2022-10-14 | 岭南生态文旅股份有限公司 | Slope protection planting net for mine restoration and restoration method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115176622A (en) * | 2022-07-31 | 2022-10-14 | 岭南生态文旅股份有限公司 | Slope protection planting net for mine restoration and restoration method |
| CN115176622B (en) * | 2022-07-31 | 2024-06-04 | 岭南生态文旅股份有限公司 | Slope protection planting net for mine restoration and restoration method |
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