An open-pit mine steep slope ecological restoration structure and restoration method

Abstract

The present application relates to an ecological restoration structure and restoration method for steep slopes in open-pit mines, and relates to the field of ecological restoration technology. In order to solve the problems of loose and poor soil, low vegetation survival rate, and poor restoration effect in the existing ecological restoration process for steep slopes. It includes a steep slope body, a plurality of ecological bags are buried inside the steep slope body, and the ecological bags are filled with nutrient soil. The surface of the ecological bags on the slope of the steep slope body is planted with herbaceous vegetation; the slope of the steep slope body is provided with a plurality of stepped surfaces, and the surface of the stepped surface is provided with a plurality of planting troughs, and the planting troughs are provided with transplanters, and shrub vegetation is planted in the transplanters; a climbing frame is provided on the side of the stepped surface away from the planting trough, and vine vegetation is planted on the climbing frame; a plurality of nutrient tubes are embedded inside the steep slope body, and a plurality of seepage holes are provided through the side wall of the nutrient tube. The present application has the effect of arranging ecological bags on the steep slope body and planting a variety of vegetation that can repair the ecological structure, thereby improving the restoration quality of the steep slope body.

Description

Technical Field

[0001] The present application relates to the field of ecological restoration technology, and in particular to an open-pit mine steep slope ecological restoration structure and restoration method. Background Art

[0002] With the continuous progress of our society, energy demand is gradually expanding, and the market demand for ore is increasing day by day, which has led to the rapid development of our mining industry. Among them, after the completion of open-pit mines, it will affect the natural landscape, cause environmental pollution, and easily cause disasters such as soil erosion. Therefore, the restoration of open-pit mines is of great significance.

[0003] Most of the existing steep slope ecological restoration structures directly plant vegetation on the steep slope surface to increase the vegetation coverage of the steep slope, thereby reducing soil erosion on the steep slope and improving the ecological environment of the steep slope.

[0004] Regarding the above-mentioned related technologies, the inventors found that after long-term mining, the steep slopes of open-pit mines have loose and poor soil. If vegetation is planted directly on the surface of the steep slopes, the roots of the vegetation will find it difficult to take root, and the soil lacks the nutrients needed for vegetation growth. The initial survival rate of vegetation is low, and it is impossible to repair the ecological structure, so it needs to be improved. Summary of the invention

[0005] In order to improve the survival rate of vegetation and the repair and improvement effect of steep slopes, the present application provides an open-pit mine steep slope ecological restoration structure and restoration method.

[0006] The present application provides an open-pit mine steep slope ecological restoration structure and restoration method using the following technical solutions:

[0007] A structure for ecological restoration of steep slopes in open-pit mines, comprising a steep slope body, a plurality of eco-bags buried inside the steep slope body, the eco-bags filled with nutrient soil, and herbaceous vegetation planted on the surface of the eco-bags on the inclined surface of the steep slope body; a plurality of stepped surfaces are provided on the inclined surface of the steep slope body, a plurality of planting troughs are provided on the surface of the stepped surfaces, transplanters are provided in the planting troughs, shrub vegetation is planted in the transplanters, and a plurality of growth holes are penetrated through the outer wall of the transplanter for the roots and stems of the shrub vegetation to extend out; a climbing frame is provided on the side of the stepped surface away from the planting trough, and vine vegetation is planted on the climbing frame; a plurality of nutrient tubes are embedded in the steep slope body, the nutrient tubes are provided along the inclination direction of the steep slope body, and a plurality of seepage holes are penetrated through the side walls of the nutrient tubes.

[0008] By adopting the above technical scheme, an eco-bag is buried inside the steep slope body and nutrient soil is filled in the eco-bag, which can improve the originally poor and loose soil of the steep slope body, and the eco-bag itself will not be dissolved by water molecules and is not easy to deform, and can play a stable soil fixing effect; planting herbaceous vegetation on the slope of the steep slope body can have a good repair effect on the surface of the steep slope body. The herbaceous vegetation has a short growth cycle and a short fruiting cycle, and can grow continuously and carry out ecological restoration; by setting a transplanter and planting shrub vegetation in the transplanter, the roots and stems of the shrub vegetation can grow more stably, thereby improving the problem that the original soil of the steep slope body is not suitable for the growth of shrub vegetation, thereby effectively improving the survival rate of shrub vegetation and the ecological restoration effect of the steep slope body; setting a climbing frame on the stepped surface and planting vine vegetation can further improve the ecological environment of the steep slope body and increase vegetation diversity; setting a nutrient pipe can irrigate the vegetation planted on the steep slope body with nutrient solution, thereby promoting the normal growth of vegetation, thereby further improving the effect of ecological restoration.

[0009] Preferably, a geonet is provided on the surface of the steep slope body, and the geonet is used to stabilize the soil on the surface of the steep slope body.

[0010] By adopting the above technical solutions, the geonet has many advantages such as reducing the water flow velocity on the soil surface, improving soil erosion, promoting seed germination, and strengthening plant root growth. It can maintain the normal growth of vegetation on the surface of the steep slope, improve survival efficiency and ecological restoration effect.

[0011] Preferably, a plurality of straw bags are provided at the connection between the climbing frame and the stepped surface.

[0012] By adopting the above technical solution, the straw bags have a certain effect of stabilizing water and soil. Providing the straw bags can stabilize the climbing frame and improve the problem that the climbing frame easily makes the soil on the step surface loose.

[0013] Preferably, the side wall of the nutrition tube is connected to a plurality of infusion tubes, the end of the infusion tube facing away from the nutrition tube is connected to the transplanter, a flow groove for the circulation of nutrient solution is provided inside the transplanter, a plurality of liquid outlet holes are provided on the inner wall of the transplanter, and the liquid outlet holes are connected to the flow groove.

[0014] By adopting the above technical solution, the provision of infusion pipes can enable the nutrient pipes to better provide nourishment to shrub vegetation. In the early stage of shrub vegetation, the root system is relatively fragile and the nutrients required are greater than those of vine vegetation and herbaceous vegetation. By providing infusion pipes, the early survival rate of shrub vegetation can be effectively improved, further improving the ecological restoration effect of the steep slope body.

[0015] Preferably, the infusion tube includes a circulation tube and a connecting tube, one end of the circulation tube is connected to the nutrition tube, the other end of the circulation tube is inclined toward the direction of the transplanter, the connecting tube is connected to the end of the circulation tube away from the nutrition tube, the side wall of the transplanter is provided with an input tube, the input tube is inserted into the inner wall of the connecting tube and connects the transplanter with the nutrition tube; the outer wall of the connecting tube is provided with a locking piece for locking the connecting tube and the input tube.

[0016] By adopting the above technical scheme, the circulation tube is tilted to form a height difference, which can make the nutrient solution in the nutrient tube flow smoothly along the tilt direction of the circulation tube, thereby effectively improving the problem of nutrient solution backflowing into the nutrient tube, so that the nutrient solution can flow normally and provide good nourishment for the shrub vegetation in the transplanter; by setting a locking piece, a stable connection can be formed between the input tube and the connecting tube, thereby reducing the probability of the connecting tube and the input tube falling off, making it difficult for the nutrient solution to enter the circulation groove inside the transplanter, thereby improving the survival rate of the shrub vegetation.

[0017] Preferably, the locking member comprises two limit rings, a rotating sleeve, a plurality of telescopic tubes connected to the inner wall of the rotating sleeve, a plurality of return springs and a plurality of plug-in columns, the telescopic tubes, the return springs and the plug-in columns corresponding to each other one by one; the two limit rings are sleeved on the outer wall of the connecting tube, the rotating sleeve is sleeved on the outer wall of the connecting tube and is located between the two limit rings, and the rotating sleeve is rotatably connected to the connecting tube; the connecting tube is provided with a plurality of sliding grooves in the thickness direction for the telescopic tube to be inserted and slided, the return spring is arranged on the inner wall of the telescopic tube, the plug-in column is connected to one end of the return spring away from the bottom wall of the telescopic tube, the connecting tube is provided with a plurality of connecting holes in the thickness direction for the plug-in column to be inserted, and the connecting hole is communicated with the sliding groove; the outer wall of the input tube inserted into the connecting tube is provided with a plurality of limit holes, and the plug-in column can be pressed into the corresponding limit hole after passing through the connection hole; the inner wall of one end of the input tube inserted into the connecting tube is provided with a guide surface.

[0018] By adopting the above technical solution, after the input tube is inserted into the inner wall of the connecting tube and the limiting hole is aligned with the connecting hole, the rotating sleeve is rotated so that the plug-in column loses the abutment effect of the bottom wall of the sliding groove, and the plug-in column will pop out from the telescopic tube due to the action of the reset spring and be inserted into the input tube, thereby locking the connecting tube and the input tube through the plug-in action of several plug-in columns. The locking member of the present application has a simple structure, is easy to implement, and has a stable connection, which can effectively reduce the probability of the connecting tube and the input tube falling off, thereby ensuring the stable energy supply of the nutrient tube to the shrub vegetation.

[0019] Preferably, the inner wall of the connection point between the circulation tube and the nutrition tube is rotatably connected to a limiting plate, and a reset torsion spring is provided at the rotatable connection between the limiting plate and the circulation tube. The force arm at one end of the reset torsion spring is connected to the limiting plate, and the force arm at the other end of the reset torsion spring is connected to the circulation tube. The limiting plate remains in an open state under the action of the reset torsion spring, and the limiting plate can rotate according to the flow rate of the nutrient solution on the inner wall of the nutrition tube to control the opening and closing of the circulation tube.

[0020] By adopting the above technical scheme, when the flow rate and flow velocity of the nutrient solution in the nutrient tube are large, the nutrient solution will be washed on the surface of the flow limiting plate and cause the flow limiting plate to rotate, thereby reducing the opening between the circulation tube and the nutrient tube, reducing the flow rate of the nutrient solution entering the circulation tube here, while the flow rate of the nutrient solution at the infusion tube downstream of the nutrient tube is relatively small, which can effectively improve the problem that all the nutrient solution enters the upstream infusion tube, and the downstream shrub vegetation obtains less nutrient solution, thereby further improving the survival rate of the shrub vegetation and the ecological restoration effect.

[0021] Preferably, the transplanter and the input tube are both made of degradable materials.

[0022] By adopting the above technical solution, when the shrub vegetation is able to grow stably, the transplanter and the input tube will naturally degrade under the decomposition of microorganisms and will not cause harm to the environment. This can effectively protect the environment and further improve the effect of ecological structure restoration.

[0023] Preferably, a seed bag is provided on the inner wall of the transplanter, and vegetation seeds are stored in the seed bag. The material of the seed bag is the same as that of the transplanter.

[0024] By adopting the above technical solution, when the transplanter degrades, the seed package will also degrade. The seeds in the seed package will come into contact with the soil, so that they can grow and consolidate the results of ecological restoration. At this time, the soil has become fertile again after the improvement of vegetation, which can enable the seeds to grow stably.

[0025] A method for ecological restoration of steep slopes in open-pit mines, comprising pre-burying nutrient pipes and ecological bags inside the steep slope body, digging planting grooves on the surface of the step surface, burying transplanters in the planting grooves, connecting the transplanters with nutrient pipes, and planting shrub vegetation in the transplanters;

[0026] A geonet is laid on the surface of the steep slope, and herbaceous vegetation is planted on the surface of the steep slope body;

[0027] A climbing frame is inserted on the surface of the step surface, and the step surface and the climbing frame are stabilized with straw bags, and vine vegetation is planted on the climbing frame;

[0028] After a period of ecological restoration, the transplanter degrades and exposes the vegetation seeds inside the seed bag. Under the action of the nutrient solution, the seeds grow and consolidate the ecological restoration.

[0029] By adopting the above-mentioned technical scheme and selecting a variety of different types of vegetation to match each other, the scope of ecological restoration of the steep slope can be increased. At the same time, structures such as ecological bags, geonets, transplanters and climbing racks can be set up to improve the living space and living conditions of the corresponding vegetation. While stabilizing the water and soil, it is more suitable for the growth of vegetation, which can effectively improve the survival rate of vegetation and the ecological restoration effect.

[0030] In summary, the present application includes at least one of the following beneficial technical effects:

[0031] 1. By setting up structures such as ecological bags, transplanters and climbing racks, it can not only stabilize the soil and improve soil erosion, but also enable different types of vegetation to have an adaptive living environment, thereby improving the survival rate of vegetation and the effect of ecological restoration;

[0032] 2. By embedding nutrient pipes inside the steep slope, nutrient solution can be supplied to the vegetation planted in the soil through which the nutrient pipes flow, which can improve the soil quality, enable the vegetation to thrive after obtaining sufficient nutrients, and improve the effect of ecological restoration. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 It is a structural schematic diagram of an open-pit mine steep slope ecological restoration structure in an embodiment of the present application.

[0034] Figure 2 It is a cross-sectional view of the steep slope body of an embodiment of the present application.

[0035] Figure 3 It is a schematic diagram of the structure of the nutrition tube and transplanter according to an embodiment of the present application.

[0036] Figure 4 It is a cross-sectional view of the transplanter according to the embodiment of the present application.

[0037] Figure 5 It is a schematic diagram of the structure of the circulation tube of an embodiment of the present application.

[0038] Figure 6 yes Figure 4 A partial enlarged view of point A in the middle.

[0039] Explanation of the accompanying drawings: 1. Steep slope body; 11. Step surface; 12. Planting trough; 2. Eco-bag; 21. Nutrition soil; 22. Herbaceous vegetation; 3. Transplanter; 31. Shrub vegetation; 32. Growth hole; 33. Circulation groove; 34. Liquid outlet; 35. Input pipe; 351. Limiting hole; 352. Guide surface; 36. Seed bag; 4. Climbing rack; 41. Climbing vegetation; 5. Nutrition tube; 51. Seepage hole; 52. Infusion tube; 521. Circulation tube; 522. Connecting tube; 5221. Sliding groove; 5222. Connecting hole; 6. Geonet; 7. Straw bag; 8. Locking piece; 81. Limiting ring; 82. Rotating sleeve; 83. Telescopic tube; 84. Reset spring; 85. Plug-in column; 9. Limiting plate; 91. Reset torsion spring. DETAILED DESCRIPTION

[0040] The following is combined with Figure 1-6 This application is described in further detail.

[0041] The present application discloses an open-pit mine steep slope ecological restoration structure and restoration method. Figure 1 and Figure 2 , an open-pit mine steep slope ecological restoration structure, including a steep slope body 1, a plurality of eco-bags 2 are embedded in the soil of the steep slope body 1, and the eco-bags 2 are filled with nutrient soil 21 for vegetation growth. The eco-bags 2 have strong acid and alkali resistance and corrosion resistance, and the structure will not be destroyed by water molecules, are not easy to deform, have little harm to the environment, and have many functions such as stabilizing the soil and improving soil erosion. It is a tool that can protect the ecology; the inclined surface of the steep slope body 1 is paved with a geonet 6, and the geonet 6 is inserted into the surface of the steep slope body 1 through anchor rods. The geonet 6 has many advantages such as reducing the water flow velocity on the soil surface, improving soil erosion, promoting seed germination, and strengthening the growth of plant roots. It cooperates with the eco-bags 2 to effectively improve the soil of the steep slope body 1;

[0042] Reference Figure 1 Herbaceous vegetation 22 is planted on the slope of the steep slope body 1. The herbaceous vegetation 22 can be orchids, chrysanthemums, etc. The herbaceous vegetation 22 is used to improve the ecological structure of the steep slope body 1. It has many advantages such as low cost, fast growth cycle, good initial soil erosion prevention effect, and is conducive to the formation of the initial topsoil layer. The herbaceous vegetation 22 can be used as the starting point of ecological restoration and lay the foundation for the ecological restoration of the steep slope body 1.

[0043] Reference Figure 1The steep slope body 1 is an inclined surface, and the inclined surface of the steep slope body 1 is provided with a plurality of stepped surfaces 11, and each stepped surface 11 is arranged horizontally; a plurality of climbing frames 4 are inserted on the side of the stepped surface 11 away from the steep slope body 1, and the plurality of climbing frames 4 are evenly distributed along the length direction of the stepped surface 11, and a straw bag 7 is arranged at the connection between the climbing frame 4 and the stepped surface 11, and the straw bag 7 is connected to the steep slope body 1 through an anchor rod; vine vegetation 41 is planted on the climbing frame 4, and the vine vegetation 41 can be selected from morning glory, ivy, etc. The straw bag 7 is woven from straw, which is harmless to the environment, and can improve the stability of the connection between the climbing frame 4 and the stepped surface 11. Planting the vine vegetation 41 can effectively increase the green volume of the steep slope body 1 and improve the ecological environment. After the vine vegetation 41 grows, it can spread over a large range and spread seeds over a larger range, so that the steep slope body 1 after subsequent repair can form a stable ecosystem to improve the ecological restoration effect.

[0044] Reference Figure 1 and Figure 3 , a plurality of planting grooves 12 are provided on one side of the step surface 11 close to the steep slope body 1, and a transplanter 3 is buried in each planting groove 12. Shrub vegetation 31 is planted in the transplanter 3. The transplanter 3 is provided with a plurality of growth holes 32 through the thickness direction for the roots and stems of the shrub vegetation 31 to pass through. The shrub vegetation 31 may be juniper, poplar, etc. In this embodiment, the transplanter 3 is made of a degradable material, and starch plastic may be used. After a certain period of time, it can be decomposed by microorganisms in the air and soil. The material itself is environmentally friendly and harmless, and can be degraded after the shrub vegetation 31 grows up. The provision of the transplanter 3 can enable the shrub vegetation 31 to survive the seedling period, thereby improving the survival rate of the shrub vegetation 31 and allowing the shrub vegetation 31 to grow more stably. After the shrub vegetation 31 has grown, the roots and stems have a strong adhesion to the soil, which can better tighten the soil to improve the soil quality.

[0045] Reference Figure 1 and Figure 4 The inner wall of the transplanter 3 is integrally connected with a seed bag 36, which is also made of degradable material. The seed bag 36 contains vegetation seeds. After the transplanter 3 is degraded, the seeds can come into contact with the soil and grow to consolidate the ecological restoration results of the steep slope body 1.

[0046] Reference Figure 2 and Figure 3 A number of nutrient tubes 5 are buried inside the steep slope body 1 along the inclination direction of the slope. The length direction of the nutrient tubes 5 is consistent with the inclination direction of the steep slope body 1. A number of seepage holes 51 are opened through the side walls of the nutrient tubes 5. The operator pours nutrient solution into the nutrient tubes 5, which can seep out through each seepage hole 51 and provide nutrients to the plants planted on the steep slope body 1, so that the vegetation can thrive.

[0047] Reference Figure 2 , Figure 3 and Figure 5 The side wall of the nutrient tube 5 is connected to a plurality of infusion tubes 52, and the infusion tubes 52 include a circulation tube 521 and a connecting tube 522. One end of the circulation tube 521 is connected to the nutrient tube 5 by welding, and the circulation tube 521 is tilted toward the direction of the transplanter 3, so that a height difference can be formed between the circulation tube 521 and the transplanter 3, which is convenient for the circulation of the nutrient solution and improves the problem of the nutrient solution being easily backflowed; the circulation tube 521 is rotatably connected to a limiting plate 9 at the connection between the circulation tube 521 and the nutrient tube 5, and a reset torsion spring 91 is provided at the rotational connection between the limiting plate 9 and the inner wall of the circulation tube 521. The force arm of one end of the reset torsion spring 91 is connected to the limiting plate 9 by gluing, and the other end is connected to the circulation tube 521 by gluing. When the reset torsion spring 91 is not subjected to external force, one side of the limiting plate 9 is tilted toward the inside of the nutrient tube 5. When the flow rate of nutrient solution in the nutrient tube 5 is large and the flow rate is fast, the upstream flow limiting plate 9 that bears more nutrient solution will rotate and gradually close the circulation tube 521 and the nutrient tube 5 under the pressure of the fluid, thereby reducing the nutrient solution flowing from the upstream nutrient tube 5 to the upper transplanter 3, so that the transplanter 3 at the lower level can also obtain sufficient nutrient solution, thereby improving the problem of uneven distribution of nutrient solution, allowing the vegetation in various parts of the steep slope body 1 to thrive, and improving the ecological restoration effect.

[0048] Reference Figure 4 and Figure 6 The connecting tube 522 is integrally formed at the end of the circulation tube 521 away from the nutrient tube 5; the interior of the transplanter 3 is hollow and forms a circulation groove 33, and the side wall of the transplanter 3 is integrally connected with an input tube 35, which is connected to the circulation groove 33, and one end of the input tube 35 is inserted into the inner wall of the connecting tube 522 and abuts against the inner wall of the connecting tube 522. The inner wall of one end of the input tube 35 inserted into the inner wall of the connecting tube 522 is provided with a guide surface 352, and a plurality of liquid outlet holes 34 are provided on the inner wall of the transplanter 3, and the liquid outlet holes 34 are connected to the circulation groove 33, so that the nutrient solution can provide more nutrients to the shrub vegetation 31, so that the shrub vegetation 31 can successfully survive the difficult survival situation during the seedling period, thereby improving the survival rate and ecological restoration effect of the shrub vegetation 31.

[0049] Reference Figure 4 and Figure 6The outer wall of the connecting tube 522 is provided with a locking piece 8 for locking the connecting tube 522 and the input tube 35. The locking piece 8 includes two limit rings 81, a rotating sleeve 82, a plurality of telescopic tubes 83 integrally connected to the inner wall of the rotating sleeve 82, a plurality of return springs 84 and a plurality of plug-in columns 85, wherein the telescopic tubes 83, the return springs 84 and the plug-in columns 85 are arranged one by one. The two limiting rings 81 are connected to the outer wall of the connecting tube 522 by welding, and the rotating sleeve 82 is also sleeved on the outer wall of the connecting tube 522 and is located between the two limiting rings 81 and abuts against the two limiting rings 81. The rotating sleeve 82 is rotatably connected to the connecting tube 522; the outer wall of the connecting tube 522 is provided with a sliding groove 5221 for the telescopic tube 83 to be inserted and slid; one end of the return spring 84 is connected to the bottom wall of the telescopic tube 83 by gluing, and the other end of the return spring 84 is connected to the plug-in column 85 by gluing. When the telescopic tube 83 is located in the sliding groove 5221, the plug-in column 85 abuts against the bottom wall of the sliding groove 5221, and the return spring 84 is in a compressed state at this time; the connecting tube A connecting hole 5222 is formed through the side wall 522 along the thickness direction, and each connecting hole 5222 corresponds to a sliding groove 5221 and is communicated with the corresponding sliding groove 5221; a plurality of limiting holes 351 are formed through the end of the input tube 35 inserted into the connecting tube 522 along the thickness direction. When the rotating sleeve 82 rotates to move the telescopic tube 83 to the connecting hole 5222, the reset spring 84 releases the elastic force to make the plug-in column 85 bounce into the limiting hole 351, thereby completing the locking of the input tube 35 and the connecting tube 522, thereby making the connection between the two more stable and reducing the probability of falling off, so as to better provide for the shrub vegetation 31 in the transplanter 3.

[0050] The present application also discloses a method for ecological restoration of steep slopes in open-pit mines:

[0051] S1: pre-bury the nutrient tube 5 and the eco-bag 2 inside the steep slope body 1, dig a planting groove 12 on the surface of the step surface 11, bury the transplanter 3 in the planting groove 12, connect the transplanter 3 with the nutrient tube 5, and plant shrub vegetation 31 in the transplanter 3;

[0052] S2: A geonet 6 is laid on the surface of the steep slope, and herbaceous vegetation 22 is planted on the surface of the steep slope body 1;

[0053] S3: inserting a climbing frame 4 on the surface of the step surface 11, and using straw bags 7 to stabilize the step surface 11 and the climbing frame 4, and planting vine vegetation 41 on the climbing frame 4;

[0054] S4: After a period of ecological restoration, the transplanter 3 degrades, and the vegetation seeds inside the seed bag 36 are exposed. Under the action of the nutrient solution, the seeds grow and consolidate the ecological restoration.

[0055] The implementation principle of the ecological restoration structure of a steep slope of an open-pit mine in an embodiment of the present application is: an ecological bag 2, a geonet 6, a transplanter 3 and a climbing frame 4 are set to stabilize the soil and improve the problem of soil erosion, while providing a living place for different types of vegetation to improve the survival rate of vegetation, thereby achieving the effect of ecological restoration; at the same time, the staff can regularly inject nutrient solution into the nutrient tube 5, thereby providing nutrients to various types of vegetation and further improving the survival rate of vegetation.

[0056] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. An open-pit mine steep slope ecological restoration structure, characterized by: The invention comprises a steep slope body (1), wherein a plurality of ecological bags (2) are buried inside the steep slope body (1), wherein the ecological bags (2) are filled with nutrient soil (21), and the surface of the ecological bags (2) on the slope of the steep slope body (1) is planted with herbaceous vegetation (22); the slope of the steep slope body (1) is provided with a plurality of stepped surfaces (11), wherein the surface of the stepped surfaces (11) is provided with a plurality of planting grooves (12), wherein the planting grooves (12) are provided with transplanters (3), wherein the transplanters (3) are planted with shrub vegetation (31), the outer wall of the transplanter (3) is penetrated with a plurality of growth holes (32) for the roots and stems of the shrub vegetation (31) to extend out; a climbing frame (4) is arranged on the side of the step surface (11) away from the planting groove (12), and vine vegetation (41) is planted on the climbing frame (4); a plurality of nutrient tubes (5) are embedded in the steep slope body (1), and the nutrient tubes (5) are arranged along the inclined direction of the steep slope body (1), and a plurality of seepage holes (51) are penetrated through the side wall of the nutrient tubes (5); The side wall of the nutrition tube (5) is connected to a plurality of infusion tubes (52), one end of the infusion tube (52) away from the nutrition tube (5) is connected to the transplanter (3), a flow groove (33) for the flow of nutrient solution is provided inside the transplanter (3), and a plurality of liquid outlet holes (34) are provided on the inner wall of the transplanter (3), and the liquid outlet holes (34) are connected to the flow groove (33); The infusion tube (52) comprises a circulation tube (521) and a connecting tube (522), one end of the circulation tube (521) is connected to the nutrition tube (5), the other end of the circulation tube (521) is inclined toward the transplanter (3), the connecting tube (522) is connected to the end of the circulation tube (521) away from the nutrition tube (5), the side wall of the transplanter (3) is provided with an input tube (35), the input tube (35) is inserted into the inner wall of the connecting tube (522) and connects the transplanter (3) with the nutrition tube (5); the outer wall of the connecting tube (522) is provided with a locking member (8) for locking the connecting tube (522) and the input tube (35); The locking member (8) comprises two limiting rings (81), a rotating sleeve (82), a plurality of telescopic tubes (83) connected to the inner wall of the rotating sleeve (82), a plurality of return springs (84) and a plurality of plug-in posts (85), wherein the telescopic tubes (83), the return springs (84) and the plug-in posts (85) correspond to each other one by one; the two limiting rings (81) are sleeved on the outer wall of the connecting tube (522), the rotating sleeve (82) is sleeved on the outer wall of the connecting tube (522) and is located between the two limiting rings (81), and the rotating sleeve (82) is rotatably connected to the connecting tube (522); the connecting tube (522) is provided with a plurality of sliding grooves (5221) along the thickness direction for the telescopic tube (83) to be inserted and slidable, the return springs (84) are arranged on the inner wall of the telescopic tube (83), and the plug-in posts (85) are arranged on the inner wall of the telescopic tube (83). The connecting tube (522) is provided with a plurality of connection holes (5222) through the thickness direction for the plug-in column (85) to be inserted, and the connection holes (5222) are communicated with the sliding groove (5221); the outer wall of the input tube (35) inserted into the connecting tube (522) is provided with a plurality of limit holes (351) through the outer wall, and the plug-in column (85) can be inserted into the corresponding limit holes (351) after passing through the connection holes (5222); the inner wall of one end of the input tube (35) inserted into the connecting tube (522) is provided with a guide surface (352); so as to complete the locking between the input tube (35) and the connecting tube (522), so that the connection between the input tube (35) and the connecting tube (522) is more stable.

2. The open-pit mine steep slope ecological restoration structure according to claim 1 is characterized by: A geonet (6) is provided on the surface of the steep slope body (1), and the geonet (6) is used to stabilize the soil on the surface of the steep slope body (1).

3. The open-pit mine steep slope ecological restoration structure according to claim 1 is characterized by: A plurality of straw bags (7) are arranged at the connection between the climbing frame (4) and the stepped surface (11).

4. The open-pit mine steep slope ecological restoration structure according to claim 1 is characterized by: The inner wall of the connection point between the circulation tube (521) and the nutrition tube (5) is rotatably connected to a flow limiting plate (9); a return torsion spring (91) is provided at the rotatable connection point between the flow limiting plate (9) and the circulation tube (521); a force arm at one end of the return torsion spring (91) is connected to the flow limiting plate (9); and a force arm at the other end of the return torsion spring (91) is connected to the circulation tube (521); the flow limiting plate (9) maintains an open state under the action of the return torsion spring (91); the flow limiting plate (9) can rotate according to the flow rate of the nutrient solution on the inner wall of the nutrition tube (5), thereby controlling the opening and closing of the circulation tube (521).

5. The open-pit mine steep slope ecological restoration structure according to claim 1 is characterized by: The transplanter (3) and the input tube (35) are both made of degradable materials.

6. The open-pit mine steep slope ecological restoration structure according to claim 5, characterized in that: The inner wall of the transplanter (3) is provided with a seed bag (36), and the seed bag (36) stores vegetation seeds. The material of the seed bag (36) is the same as that of the transplanter (3).

7. A method for ecological restoration of steep slopes in open-pit mines using the open-pit mine steep slope ecological restoration structure according to any one of claims 1 to 6, characterized in that: A nutrient tube (5) and an ecological bag (2) are pre-buried inside the steep slope body (1), a planting groove (12) is dug on the surface of the step surface (11), and a transplanter (3) is buried in the planting groove (12), the transplanter (3) is connected to the nutrient tube (5), and shrub vegetation (31) is planted in the transplanter (3); A geonet (6) is laid on the surface of the steep slope, and herbaceous vegetation (22) is planted on the surface of the steep slope body (1); A climbing frame (4) is inserted on the surface of the stepped surface (11), and the stepped surface (11) and the climbing frame (4) are stabilized with straw bags (7), and vine vegetation (41) is planted on the climbing frame (4); After a period of ecological restoration, the transplanter (3) degrades, exposing the vegetation seeds inside the seed bag (36). Under the action of the nutrient solution, the seeds grow and consolidate the ecological restoration.

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