CN111894013A - Ecological restoration method for side slope of damaged mountain - Google Patents
Ecological restoration method for side slope of damaged mountain Download PDFInfo
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- CN111894013A CN111894013A CN202010732105.1A CN202010732105A CN111894013A CN 111894013 A CN111894013 A CN 111894013A CN 202010732105 A CN202010732105 A CN 202010732105A CN 111894013 A CN111894013 A CN 111894013A
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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
- A01B—SOIL WORKING IN AGRICULTURE OR FORESTRY; PARTS, DETAILS, OR ACCESSORIES OF AGRICULTURAL MACHINES OR IMPLEMENTS, IN GENERAL
- A01B79/00—Methods for working soil
- A01B79/02—Methods for working soil combined with other agricultural processing, e.g. fertilising, planting
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D3/00—Improving or preserving soil or rock, e.g. preserving permafrost soil
- E02D3/02—Improving by compacting
- E02D3/10—Improving by compacting by watering, draining, de-aerating or blasting, e.g. by installing sand or wick drains
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/74—Means for anchoring structural elements or bulkheads
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- Life Sciences & Earth Sciences (AREA)
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- Mining & Mineral Resources (AREA)
- General Engineering & Computer Science (AREA)
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- General Life Sciences & Earth Sciences (AREA)
- Soil Sciences (AREA)
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- Agronomy & Crop Science (AREA)
- Environmental & Geological Engineering (AREA)
- Pit Excavations, Shoring, Fill Or Stabilisation Of Slopes (AREA)
Abstract
The application relates to a slope ecological restoration method for a damaged mountain, which comprises the following steps: s1, clearing slope surfaces; s2, constructing a vegetation concrete enclosure wall along the edge of the side slope; s3, filling vegetation concrete supporting points into the slope cracks in the range of the vegetation concrete enclosure wall, and installing a supporting anchor rod at each vegetation concrete supporting point; s4, installing a base layer anchor rod on the vegetation concrete enclosing wall; s5, laying a base layer mesh sheet consisting of a plurality of base layer meshes according to the relation between the base layer anchor rods and the support anchor rods; s6, constructing vegetation concrete protection grids in each basic layer grid; s7, mounting a protective anchor rod on the vegetation concrete protective lattice; s8, laying a protective mesh according to the protective anchor rod; and S9, spraying the substrate mixture to the whole slope surface of the side slope. The application has the effect of reducing damage to the side slope.
Description
Technical Field
The application relates to the field of slope ecological protection, in particular to a slope ecological restoration method for a damaged mountain.
Background
When people randomly mine the mountain for a long time, large natural vegetation is destroyed, the mountain is broken to form a bare slope, the mountain is eroded and weathered for a long time to become rock, and plants cannot grow on the mountain, so that the mountain is called a broken mountain.
Ecological restoration of the damaged mountain can help improve the ecological environment of the damaged mountain, and avoid increasingly serious ecological and environmental problems caused by mining of the mountain. A commonly used ecological restoration technology for damaged mountains is a net hanging and spraying technology, which is characterized in that organic soil, long-acting fertilizer, adhesive, grass seeds and the like are mixed according to a certain proportion and uniformly stirred to form a base material, and the base material is sprayed on a slope surface hung with a metal net or a reinforcing mesh through a special spraying machine to form a planting matrix with a certain thickness and capable of enabling plants to grow on the slope surface. After the vegetation is recovered, on one hand, the root system of the vegetation is interwoven and wound with the lower net piece to form a soil stabilization protective layer with the reinforcement effect, and on the other hand, the prosperous root system can be deeply buried in the joints and cracks of the rock body through the base material, so that the purpose of slope stabilization can be achieved. When the net hanging spray-seeding technology is adopted for ecological protection, holes need to be drilled on the side slope, anchor rods need to be fixed, and then nets need to be hung on the anchor rods.
In view of the above-described related art, the inventors consider that there is a defect of damaging the slope.
Disclosure of Invention
In order to reduce damage to the side slope, the application provides a side slope ecological restoration method for a damaged mountain.
The application provides a side slope ecological restoration method for a damaged mountain, which adopts the following technical scheme:
a method for restoring the ecology of a side slope of a damaged mountain comprises the following steps:
s1, clearing slope surfaces;
s2, constructing a vegetation concrete enclosure wall along the edge of the side slope;
s3, filling vegetation concrete supporting points into the slope cracks in the range of the vegetation concrete enclosure wall, and installing a supporting anchor rod at each vegetation concrete supporting point;
s4, installing a base layer anchor rod on the vegetation concrete enclosing wall;
s5, laying a base layer mesh sheet consisting of a plurality of base layer meshes according to the relation between the base layer anchor rods and the support anchor rods;
s6, constructing vegetation concrete protection grids in each basic layer grid;
s7, mounting a protective anchor rod on the vegetation concrete protective lattice;
s8, laying a protective mesh according to the protective anchor rod;
and S9, spraying the substrate mixture to the whole slope surface of the side slope.
By adopting the technical scheme, the base anchor rod and the support anchor rod are respectively embedded on the basis of the vegetation concrete enclosure and the vegetation concrete supporting points so as to be convenient for the erection of the base mesh; and then constructing vegetation concrete protection grids in the basic layer grids, and burying protection anchor rods on the basis of the vegetation concrete protection grids so as to be convenient for building protection meshes and finish the restoration of the whole slope surface. Wherein, because basic unit's stock and support stock bury respectively in vegetation concrete enclosure and vegetation concrete strong point, and the protection stock has pre-buried in vegetation concrete protection check for slope surface does not contact with the stock, thereby just can reduce the stock to the domatic damage of slope surface.
Preferably, in step S3, the method specifically includes the following steps:
s3.1, traversing the slope surface of the vegetation concrete enclosure, and finding all slope surface cracks on the slope surface;
s3.2, dividing the slope cracks into large cracks and small cracks according to the sizes, and filling the large cracks and the small cracks into vegetation concrete supporting points;
s3.3, mounting a support anchor rod at each vegetation concrete support point; wherein the support anchor in the large cracks is thicker and shorter than the support anchor in the small cracks.
Preferably, in step S4, the method specifically includes the following steps:
s4.1, positioning mounting points corresponding to the support anchor rods on the vegetation concrete enclosure wall; wherein, the mounting point is that the support anchor rod extends to the position on the vegetation concrete enclosure along the horizontal direction and the longitudinal direction of the slope surface of the side slope respectively;
s4.2, respectively installing base layer anchor rods on the installation points according to different sizes of the slope cracks; wherein, the base stock of the mounting point department that corresponds with big crack is more thick shorter than the base stock of the mounting point department that corresponds with little crack.
By adopting the technical scheme, the support anchor rods with different thicknesses and lengths are selected for pre-embedding according to different sizes of the side slope cracks; the large cracks are large in vegetation concrete supporting points and large in embedded space, so that the large cracks are suitable for installation of relatively thick and short support anchor rods. Under the cooperation of the supporting anchor rods in the side slope cracks with different sizes and the corresponding base layer anchor rods, the construction of base layer grids with different levels is facilitated.
Preferably, in step S5, the method specifically includes the following steps:
s5.1, connecting two thick steel wire ropes to the support anchor rods in all large cracks in the slope surface cracks;
s5.2, stretching two ends of each two thick steel wire ropes to the vegetation concrete enclosure wall along the transverse direction and the longitudinal direction of the slope surface of the side slope respectively, and connecting two ends of each two thick steel wire ropes with corresponding base anchor rods respectively;
s5.3, connecting two thin steel wire ropes to the support anchor rods in all small cracks in the slope surface cracks;
and S5.4, stretching two ends of each two thin steel wire ropes to the vegetation concrete enclosure wall along the transverse direction and the longitudinal direction of the slope surface of the side slope respectively, and connecting the two ends of each two thin steel wire ropes with corresponding base anchor rods respectively.
Preferably, in step S6, the method specifically includes the following steps:
s6.1, arranging a protective grid template fixed with the side slope in a base layer grid surrounded by the thin steel wire rope and the vegetation concrete enclosure wall, and pouring concrete into the protective grid template;
s6.2, fixedly connecting the concrete poured in the protective grid template with the thick steel wire rope;
and S6.3, repeating the steps to enable the vegetation concrete protection grids to be fully distributed in all the basic layer grids surrounded by the thin steel wire ropes and the vegetation concrete enclosing walls.
By adopting the technical scheme, the base layer grids built by the thick steel wire ropes are closer to the slope surface of the side slope than the base layer grids built by the thin steel wire ropes under the matching of the support anchor rods in the side slope cracks with different sizes and the corresponding base layer anchor rods; when the vegetation concrete protection lattice is constructed, the vegetation concrete protection lattice can be connected with the thick steel wire rope, and the effect of reinforcing the vegetation concrete protection lattice is realized.
Preferably, after step S6.1, the following steps are also included:
s6.1.1, a drain hole is arranged in the protection grid template;
s6.1.2 a drainage channel communicated with the drainage hole is arranged between each protection grid template.
Through adopting above-mentioned technical scheme, through the setting of wash port and drainage canal to the moisture in the vegetation concrete protection check is discharged.
Preferably, in step S8, the method specifically includes the following steps:
s8.1, connecting a protection steel wire rope between every two adjacent protection anchor rods;
s8.2, reinforcing and connecting each protective steel wire rope at the intersection of the protective steel wire rope and the thin steel wire rope.
By adopting the technical scheme, the protection net piece and the base net piece can be linked by the reinforced connection of the protection steel wire rope and the thin steel wire rope, so that the protection net piece is firmer.
Preferably, after step S9, the method further includes the following steps:
s10, planting grass on the whole slope surface;
and S11, planting shrub seedlings on the slope of the whole side slope.
By adopting the technical scheme, the shrubs with developed native roots are combined with the grass with developed fibrous roots by the method of planting the grass firstly and then planting the shrub seedlings, and soil bodies are naturally fixed. And the technology has low requirements on subsequent maintenance management, and developed root systems of shrubs can automatically absorb water from soil, so frequent manual watering is not needed in the later-stage management and maintenance, and the maintenance cost of greening is greatly reduced.
Drawings
FIG. 1 is a flowchart of the overall method of the present application.
Fig. 2 is a flow chart of a method of embodiment highlighting support and base layer anchor installation.
FIG. 3 is a flow chart of the method for building the base layer mesh and constructing the vegetation concrete protection grid.
FIG. 4 is a flow chart of a method for highlighting drainage of a vegetation concrete guard grid according to an embodiment.
Detailed Description
The present application is described in further detail below with reference to figures 1-4.
The embodiment of the application discloses a slope ecological restoration method for a damaged mountain. Referring to fig. 1, the slope ecological restoration method comprises the following steps:
s1, clearing slope surfaces; and removing pumice and dangerous stones to carry out mountain danger elimination so as to level the slope surface of the side slope.
And S2, constructing a vegetation concrete enclosure wall along the edge of the side slope.
S3, filling vegetation concrete supporting points into the slope cracks in the range of the vegetation concrete enclosure wall, and installing a supporting anchor rod at each vegetation concrete supporting point; determining the length, anchoring depth and exposed length of the anchor rod according to the size and shape of the slope surface crack, and burying the anchor rod and the slope surface at a certain included angle;
s3.1, traversing the slope surface of the vegetation concrete enclosure, and finding all surface cracks on the slope surface;
s3.2, dividing the slope cracks into large cracks and small cracks according to the sizes, and filling the large cracks and the small cracks into vegetation concrete supporting points; wherein, firstly, the vegetation concrete supporting points with large cracks are filled, and the vegetation concrete supporting points are dried and maintained for 10 to 15 days; then filling the vegetation concrete supporting points of the small cracks;
s3.3, mounting a support anchor rod at each vegetation concrete support point; wherein the support anchor in the large cracks is thicker and shorter than the support anchor in the small cracks.
S4, installing a base layer anchor rod on the vegetation concrete enclosing wall;
s4.1, positioning a mounting point corresponding to the support anchor rod on the vegetation concrete enclosure wall; wherein, the mounting point is that the support anchor rod extends to the position on the vegetation concrete enclosure along the horizontal direction and the longitudinal direction of the slope surface of the side slope respectively;
s4.2, respectively installing base layer anchor rods on the installation points according to different sizes of the slope cracks; wherein, the base stock of the mounting point department that corresponds with big crack is more thick shorter than the base stock of the mounting point department that corresponds with little crack. The support anchor rods with different thicknesses and lengths are selected for pre-embedding according to different sizes of side slope cracks; the large cracks are large in vegetation concrete supporting points and large in embedded space, so that the large cracks are suitable for installation of relatively thick and short support anchor rods. Under the cooperation of the supporting anchor rods in the side slope cracks with different sizes and the corresponding base layer anchor rods, the construction of base layer grids with different levels is facilitated.
S5, laying a base layer mesh sheet consisting of a plurality of base layer meshes according to the relation between the base layer anchor rods and the support anchor rods;
s5.1, connecting two thick steel wire ropes to the support anchor rods in all large cracks in the slope surface cracks;
s5.2, stretching two ends of each two thick steel wire ropes to the vegetation concrete enclosure wall along the transverse direction and the longitudinal direction of the slope surface of the side slope respectively, and connecting two ends of each two thick steel wire ropes with corresponding base anchor rods respectively;
s5.3, connecting two thin steel wire ropes to the support anchor rods in all small cracks in the slope surface cracks;
and S5.4, stretching two ends of each two thin steel wire ropes to the vegetation concrete enclosure wall along the transverse direction and the longitudinal direction of the slope surface of the side slope respectively, and connecting the two ends of each two thin steel wire ropes with corresponding base anchor rods respectively.
S6, constructing vegetation concrete protection grids in each basic layer grid;
s6.1, arranging a protective grid template fixed with the side slope in a base layer grid surrounded by the thin steel wire rope and the vegetation concrete enclosure, and pouring concrete into the protective grid template; the protection grid template is a square grid with the side length of 50cm-90 cm;
s6.1.1, a drain hole is arranged in the protection grid template;
s6.1.2, a drainage channel communicated with the drainage hole is arranged between each protection grid template;
through the arrangement of the drain holes and the drain channels, the moisture in the vegetation concrete protection grids can be conveniently drained.
S6.2, fixedly connecting the concrete poured in the protective grid template with the thick steel wire rope; the vegetation concrete protection lattice realizes the position reinforcement of the vegetation concrete protection lattice by the position of the thick steel wire rope;
s6.3, repeating the steps to enable the vegetation concrete protection grids to be fully distributed with all basic layer grids surrounded by the thin steel wire ropes and the vegetation concrete enclosing walls; under the matching of the support anchor rods in the side slope cracks with different sizes and the corresponding base layer anchor rods, the base layer grids built by the thick steel wire ropes are closer to the side slope surface than the base layer grids built by the thin steel wire ropes; when the vegetation concrete protection lattice is constructed, the vegetation concrete protection lattice can be connected with the thick steel wire rope, and the effect of reinforcing the vegetation concrete protection lattice is realized.
And S7, installing a protective anchor rod on the vegetation concrete protective grid.
S8, laying a protective mesh according to the protective anchor rod; the protective net sheets are laid from top to bottom along the slope surface of the side slope, the protective net sheets need to be tensioned when being laid, and lap joints need to be carried out between the nets up and down;
s8.1, connecting a protection steel wire rope between every two adjacent protection anchor rods;
s8.2, reinforcing and connecting each protective steel wire rope at the intersection of the protective steel wire rope and the thin steel wire rope;
through the reinforced connection of the protective steel wire rope and the thin steel wire rope, the linkage of the protective net piece and the base net piece can be realized, and the protective net piece is firmer.
S9, spraying the base material mixture to the whole slope surface of the side slope; the base material mixture is formed by mixing materials such as soil, fertilizers, binding materials, organic matters, plant seeds and the like. Wherein, a base anchor rod and a support anchor rod are respectively embedded on the basis of the vegetation concrete enclosing wall and the vegetation concrete supporting point so as to conveniently erect the base mesh; and then constructing vegetation concrete protection grids in the basic layer grids, and burying protection anchor rods on the basis of the vegetation concrete protection grids so as to be convenient for building protection meshes and finish the restoration of the whole slope surface. Wherein, because basic unit's stock and support stock bury respectively in vegetation concrete enclosure and vegetation concrete strong point, and the protection stock has pre-buried in vegetation concrete protection check for slope surface does not contact with the stock, thereby just can reduce the stock to the domatic damage of slope surface.
S10, planting grass on the whole slope surface;
and S11, planting shrub seedlings on the slope of the whole side slope.
By the method of planting grass firstly and then planting shrub seedlings, the shrubs with developed native roots are combined with the grass with developed fibrous roots to naturally fix soil. And the technology has low requirements on subsequent maintenance management, and developed root systems of shrubs can automatically absorb water from soil, so frequent manual watering is not needed in the later-stage management and maintenance, and the maintenance cost of greening is greatly reduced.
The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.
Claims (8)
1. A method for restoring the ecology of a side slope of a damaged mountain is characterized by comprising the following steps:
s1, clearing slope surfaces;
s2, constructing a vegetation concrete enclosure wall along the edge of the side slope;
s3, filling vegetation concrete supporting points into the slope cracks in the range of the vegetation concrete enclosure wall, and installing a supporting anchor rod at each vegetation concrete supporting point;
s4, installing a base layer anchor rod on the vegetation concrete enclosing wall;
s5, laying a base layer mesh sheet consisting of a plurality of base layer meshes according to the relation between the base layer anchor rods and the support anchor rods;
s6, constructing vegetation concrete protection grids in each basic layer grid;
s7, mounting a protective anchor rod on the vegetation concrete protective lattice;
s8, laying a protective mesh according to the protective anchor rod;
and S9, spraying the substrate mixture to the whole slope surface of the side slope.
2. The ecological restoration method for the side slope of the damaged mountain as claimed in claim 1, wherein in step S3, the method comprises the following steps:
s3.1, traversing the slope surface of the vegetation concrete enclosure, and finding all slope surface cracks on the slope surface;
s3.2, dividing the slope cracks into large cracks and small cracks according to the sizes, and filling the large cracks and the small cracks into vegetation concrete supporting points;
s3.3, mounting a support anchor rod at each vegetation concrete support point; wherein the support anchor in the large cracks is thicker and shorter than the support anchor in the small cracks.
3. The ecological restoration method for the side slope of the damaged mountain as claimed in claim 2, wherein in step S4, the method comprises the following steps:
s4.1, positioning mounting points corresponding to the support anchor rods on the vegetation concrete enclosure wall; wherein, the mounting point is that the support anchor rod extends to the position on the vegetation concrete enclosure along the horizontal direction and the longitudinal direction of the slope surface of the side slope respectively;
s4.2, respectively installing base layer anchor rods on the installation points according to different sizes of the slope cracks; wherein, the base stock of the mounting point department that corresponds with big crack is more thick shorter than the base stock of the mounting point department that corresponds with little crack.
4. The ecological restoration method for the side slope of the damaged mountain as claimed in claim 3, wherein in step S5, the method comprises the following steps:
s5.1, connecting two thick steel wire ropes to the support anchor rods in all large cracks in the slope surface cracks;
s5.2, stretching two ends of each two thick steel wire ropes to the vegetation concrete enclosure wall along the transverse direction and the longitudinal direction of the slope surface of the side slope respectively, and connecting two ends of each two thick steel wire ropes with corresponding base anchor rods respectively;
s5.3, connecting two thin steel wire ropes to the support anchor rods in all small cracks in the slope surface cracks;
and S5.4, stretching two ends of each two thin steel wire ropes to the vegetation concrete enclosure wall along the transverse direction and the longitudinal direction of the slope surface of the side slope respectively, and connecting the two ends of each two thin steel wire ropes with corresponding base anchor rods respectively.
5. The ecological restoration method for the side slope of the damaged mountain as claimed in claim 4, wherein in step S6, the method comprises the following steps:
s6.1, arranging a protective grid template fixed with the side slope in a base layer grid surrounded by the thin steel wire rope and the vegetation concrete enclosure wall, and pouring concrete into the protective grid template;
s6.2, fixedly connecting the concrete poured in the protective grid template with the thick steel wire rope;
and S6.3, repeating the steps to enable the vegetation concrete protection grids to be fully distributed in all the basic layer grids surrounded by the thin steel wire ropes and the vegetation concrete enclosing walls.
6. The ecological restoration method for the slope of the damaged mountain of claim 5, further comprising the following steps after the step S6.1:
s6.1.1, a drain hole is arranged in the protection grid template;
s6.1.2 a drainage channel communicated with the drainage hole is arranged between each protection grid template.
7. The ecological restoration method for the side slope of the damaged mountain as claimed in claim 4, wherein in step S8, the method comprises the following steps:
s8.1, connecting a protection steel wire rope between every two adjacent protection anchor rods;
s8.2, reinforcing and connecting each protective steel wire rope at the intersection of the protective steel wire rope and the thin steel wire rope.
8. The ecological restoration method for the slope of the damaged mountain of claim 1, further comprising the following steps after step S9:
s10, planting grass on the whole slope surface;
and S11, planting shrub seedlings on the slope of the whole side slope.
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| CN202010732105.1A CN111894013B (en) | 2020-07-27 | 2020-07-27 | Ecological restoration method for side slope of damaged mountain |
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| CN202010732105.1A CN111894013B (en) | 2020-07-27 | 2020-07-27 | Ecological restoration method for side slope of damaged mountain |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113668578A (en) * | 2021-09-17 | 2021-11-19 | 深圳永恒工程开发有限公司 | Vegetation concrete ecological slope protection construction method |
| CN115110549A (en) * | 2022-06-30 | 2022-09-27 | 徐州市九州生态园林股份有限公司 | Ecological restoration method for mountain slope |
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| JPH0988077A (en) * | 1995-07-13 | 1997-03-31 | Sango:Kk | Repair method of falling rock preventive concrete wall of slope |
| CN201343730Y (en) * | 2009-01-06 | 2009-11-11 | 中铁二院工程集团有限责任公司 | Ecological protection structure for high rock slope |
| CN106351238A (en) * | 2016-10-17 | 2017-01-25 | 三峡大学 | Vegetation-concrete double-layer protective screening side slope ecological greening system and method for performing side slope ecological greening by using system |
| CN109555133A (en) * | 2017-09-27 | 2019-04-02 | 广东金东建设工程公司 | A kind of method and structure of slope controlling stability |
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2020
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0988077A (en) * | 1995-07-13 | 1997-03-31 | Sango:Kk | Repair method of falling rock preventive concrete wall of slope |
| CN201343730Y (en) * | 2009-01-06 | 2009-11-11 | 中铁二院工程集团有限责任公司 | Ecological protection structure for high rock slope |
| CN106351238A (en) * | 2016-10-17 | 2017-01-25 | 三峡大学 | Vegetation-concrete double-layer protective screening side slope ecological greening system and method for performing side slope ecological greening by using system |
| CN109555133A (en) * | 2017-09-27 | 2019-04-02 | 广东金东建设工程公司 | A kind of method and structure of slope controlling stability |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113668578A (en) * | 2021-09-17 | 2021-11-19 | 深圳永恒工程开发有限公司 | Vegetation concrete ecological slope protection construction method |
| CN115110549A (en) * | 2022-06-30 | 2022-09-27 | 徐州市九州生态园林股份有限公司 | Ecological restoration method for mountain slope |
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