A Low-Carbon Deployment Method for Slope Distributed Wind-Solar Hybrid Power Generation Ecosystem

Abstract

This invention relates to a low-carbon deployment method for a distributed wind-solar hybrid power generation ecosystem on slopes, comprising: mid-level sliding stability analysis; shallow-level sliding stability analysis; and slope stability analysis after installing solar panels and wind turbines. The method of this invention performs slope stability analysis before and after establishing a distributed wind-solar hybrid power generation system on abandoned mine slopes, reducing and preventing disasters such as slope landslides. This not only effectively utilizes new energy sources and reduces land reclamation costs, but also solves the problem of secondary development and utilization of mine land.

Description

Technical Field

[0001] This invention relates to the field of distributed wind-solar hybrid power generation applications, specifically a low-carbon deployment method for a slope-based distributed wind-solar hybrid power generation ecosystem. Background Technology

[0002] With rapid economic development, our continuous exploitation of mineral resources has also brought serious environmental problems, such as geological disasters in mines, waste of land resources, destruction of natural landscapes, and environmental pollution. Utilizing abandoned mine sites to build photovoltaic power stations and wind power systems not only effectively utilizes new energy sources and reduces the cost of land reclamation, but also solves the problem of secondary development and utilization of mine land. How to rationally arrange a distributed wind-solar hybrid power generation ecosystem is a topic worthy of study. Summary of the Invention

[0003] To address the problems in the utilization of abandoned mining sites, this invention provides a method for applying a distributed wind-solar hybrid system on slopes in abandoned mining sites, achieving rational utilization of abandoned mining sites and promoting low-carbon, environmentally friendly, and energy-saving practices, thereby providing technical guidance and scientific demonstration for the country's implementation of green mining.

[0004] The technical solution adopted in this invention is:

[0005] A low-carbon deployment method for distributed wind-solar hybrid power generation ecosystems on slopes includes:

[0006] Step 1: Mid-layer sliding stability analysis;

[0007] In stability analysis, the specific location and approximate range of the potential sliding surface of the slope are determined. For intermediate sliding slopes, the Slide method is used to automatically search for the critical sliding surface of the slope.

[0008] Step 2: Shallow Sliding Stability Analysis

[0009] Analyze the safety reserves of slopes that currently show signs of sliding; if there is sliding on the slope surface and a free face appears, analyze the remaining sliding range of the slope and the possibility of sliding again.

[0010] Step 3: Stability analysis of the slope after installing the solar panels and wind turbine.

[0011] Taking into account the effects of sunlight, wind, and slope angle, a wind-solar hybrid distributed power generation system is installed to prioritize supplying local loads. If there is a surplus of electricity to meet the load demand, energy storage system is used for energy storage or grid connection. When power generation is insufficient, the grid compensates for it.

[0012] When installing solar panels on a slope that meets stability requirements, the panels should be laid out according to the actual slope inclination angle. When the slope angle is close to the calculated inclination angle of the local solar panel array, the solar panels should be laid parallel to the slope.

[0013] Furthermore, the surface of the slope is covered with mortar to prevent soil erosion and to support the pile foundations of the solar cell array.

[0014] Furthermore, on slopes where sunlight, wind, and slope angle are unsuitable for installing solar panels, vegetation cover should be carried out in the reclaimed areas. Vegetation zones should be selected in the reclaimed areas, and dynamic monitoring should be conducted during planting to prevent severe soil erosion.

[0015] Furthermore, a rainwater harvesting system is constructed on the slope, arranged in sections along the pile foundations of the solar panels.

[0016] Furthermore, the slope distributed wind-solar hybrid power generation ecosystem includes wind power generation systems, photovoltaic power generation systems, vegetation reclamation ecosystems, and rainwater harvesting systems.

[0017] Furthermore, in step (1), the slope profile of the abandoned mine is divided into sections. The range of potential dangerous sliding surfaces of the slope is automatically searched using the Slide software and the simple distribution method. The calculation method of the mining industry standard "Technical Specification for Design and Construction of Landslide Prevention Engineering" is adopted. For broken line sliding, the transfer coefficient method is used to verify the slope stability coefficient and the remaining sliding force.

[0018] Furthermore, in step (3), the installation process of the solar panels in the photovoltaic power generation system is as follows:

[0019] 3.1 Azimuth and Inclination

[0020] For a photovoltaic array fixed at a certain tilt angle, a relatively simple empirical formula for calculating the radiation is:

[0021] R β =S×[sin(α+β) / sinα]+D

[0022] In the formula:

[0023] R β —Total solar radiation on the photovoltaic array surface;

[0024] S—Direct solar radiation on a horizontal surface;

[0025] D—Scattered radiation;

[0026] α—Solar altitude angle at noon;

[0027] β—Tilting angle of the photovoltaic array.

[0028] Currently, the internationally accepted method for calculating the monthly average solar irradiance on inclined surfaces is the one proposed by Klien and Theilacker. The formula is as follows:

[0029] In the formula:

[0030] —The ratio of the monthly average solar radiation on an inclined surface to the monthly average solar radiation on a horizontal surface;

[0031] —The average monthly solar diffuse radiation on a horizontal surface;

[0032] —Monthly average total radiation on a horizontal surface;

[0033] β—Tilted angle of the photovoltaic array;

[0034] ρ—Ground reflectivity;

[0035] 3.2 Calculation of matrix spacing

[0036] On the horizontal plane:

[0037] When the photovoltaic power station has a large power output, it is necessary to arrange the solar cell arrays one after the other to determine the distance between the arrays. The principle for determining the spacing according to the national standard formula is: the solar cell arrays should not be shaded from 9:00 am to 3:00 pm on the winter solstice.

[0038] The calculation formula is as follows:

[0039]

[0040] D—is the front and rear spacing;

[0041] —This represents the latitude of the photovoltaic system; positive for the Northern Hemisphere and negative for the Southern Hemisphere.

[0042] H—is the vertical height from the bottom edge of the rear photovoltaic modules to the top edge of the front obstruction;

[0043] On the slope:

[0044] For slopes of mine waste dumps, when installing solar panels on slopes that meet stability requirements, the panels should be laid according to the actual slope inclination angle. When the slope angle is close to the calculated inclination angle of the local solar panel array, the solar panels should be laid parallel to the slope.

[0045] This invention rationally arranges a distributed wind-solar hybrid power generation ecosystem on the slopes of abandoned mine sites, not only solving the problem of secondary utilization of abandoned mine sites but also realizing the secondary utilization of low-carbon, environmentally friendly, and clean energy. The method proposes conducting slope stability analysis before and after establishing the distributed wind-solar hybrid power generation system on abandoned mine slopes to reduce and prevent disasters such as slope landslides. It not only effectively utilizes new energy sources and reduces the cost of land reclamation but also solves the problem of secondary development and utilization of mine land. The solar photovoltaic station can serve as one of the main landscape features in mine restoration, and combined with the restored vegetation and other landscape features, it can form a mine art form with high visitor value. Attached Figure Description

[0046] Figure 1 This is a structural block diagram of a slope-distributed wind-solar hybrid power generation ecosystem according to an embodiment of the present invention;

[0047] Figure 2 This is a schematic diagram of the installation location of the slope distributed wind-solar hybrid power generation ecosystem according to an embodiment of the present invention;

[0048] Figure 3 These are the locations of exploration points ZK1-ZK11 and three profiles selected along the main exploration line on the slope of the abandoned mine site.

[0049] Figure 4 It is the sliding surface for the I-I′ profile search in this embodiment of the invention;

[0050] Figure 5 This is the calculation model of the sliding surface in section I-I′ of this invention; ①-⑩ represent dividing the sliding surface into 1-10 strips;

[0051] Figure 6 It is the sliding surface for searching the II-II' section in this embodiment of the invention;

[0052] Figure 7 This is the calculation model of the sliding surface in section II-II′ of this invention; ①-⑩ represent dividing the sliding surface into 1-10 strips;

[0053] Figure 8 It is the sliding surface for the III-III′ profile search in this embodiment of the invention;

[0054] Figure 9 This is the calculation model for the sliding surface of section III-III′ in this embodiment of the invention. ①-⑩ represent dividing the sliding surface into 1-10 strips;

[0055] Figure 10 This is the calculation process for the spacing of solar cell arrays on a horizontal plane according to an embodiment of the present invention;

[0056] Figure 11This is a schematic diagram of the solar cell array layout on the slope according to an embodiment of the present invention. Detailed Implementation

[0057] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0058] Unless otherwise defined, the technical or scientific terms used in the embodiments of this application shall have the ordinary meaning understood by one of ordinary skill in the art. The terms "first," "second," and similar terms used in this embodiment do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "comprising" or "including" mean that the element or object preceding the word encompasses the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Installed," "connected," and "linked" should be interpreted broadly; for example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two elements. Terms such as "upper," "lower," "left," "right," "horizontal," and "vertical" are used only relative to the orientation of the components in the accompanying drawings. These directional terms are relative concepts used for relative description and clarification, and they may change accordingly depending on the orientation of the components in the accompanying drawings.

[0059] like Figure 1 As shown, the slope-distributed wind-solar hybrid power generation ecosystem of this embodiment includes a wind power generation system 1, a photovoltaic power generation system 2, a vegetation reclamation ecosystem 3, and a rainwater harvesting system 4. The wind power generation system, photovoltaic power generation system, and vegetation reclamation ecosystem can utilize existing technologies, and the rainwater harvesting system is a drainage structure arranged according to existing technologies.

[0060] In this embodiment, wind power generation system 1 and photovoltaic power generation system 2 mainly utilize clean energy to generate electricity. The power generation systems prioritize supplying local loads. When there is a surplus after meeting load requirements, energy storage systems are used for energy storage or grid connection. When power generation is insufficient, the grid compensates. The establishment of a vegetation reclamation ecosystem in abandoned mining areas can prevent wind erosion and sand fixation, protect the mining environment, and also establish ecological agriculture to generate income. Vegetation in the reclamation area can be selected by zone, including varieties such as fruit trees, crops, ornamental trees, fungi, and flowers. Dynamic monitoring is conducted during planting to prevent severe soil erosion. A rainwater harvesting system can be constructed along the pile foundations of the solar panels. Rainwater collection not only solves the slope drainage problem but also allows for the reuse of collected rainwater for irrigation of the vegetation in the reclamation area and cleaning of the solar panels.

[0061] To ensure the stability of the system, this embodiment proposes a low-carbon deployment method for distributed wind-solar hybrid power generation ecosystems on slopes of abandoned mine sites:

[0062] First, on-site exploration of the abandoned mining area was conducted to analyze the stability of the slopes. On slopes meeting stability requirements, the impact of adding solar panel loads and wind turbines on the slope system's stability was analyzed. Considering the effects of sunlight, wind force, and slope angle, a wind-solar hybrid distributed power generation system was installed, prioritizing supply to the local load. If there is a surplus after meeting the load demand, energy storage systems are used for energy storage or grid connection. When power generation is insufficient, the grid compensates for the shortfall. On slopes where solar panels are installed and stability is met, a rainwater harvesting system was constructed. This not only solves the slope drainage problem but also allows for the reuse of collected rainwater for irrigation of vegetation in the reclaimed area and cleaning of the solar panels. This system not only rationally utilizes new energy sources but also provides a theoretical basis for the development of green mines.

[0063] The installation location of the slope distributed wind-solar hybrid power generation ecosystem in this embodiment is as follows: Figure 2 As shown, the wind power system is designed to be located at higher elevations on the slope to maximize the use of wind energy. The photovoltaic power system is installed on the middle section of the slope where sunlight is abundant (or even at the top on lower slopes), reducing installation and maintenance costs while maximizing clean energy utilization. The rainwater harvesting system is laid along the slope, with an artificial lake or reservoir at the bottom to store the collected rainwater, which can be used to irrigate nearby reclaimed vegetation or to clean the solar panels. In slopes where sunlight, wind, or slope angle are unsuitable for solar panel installation, the vegetation reclamation ecosystem can cover the entire slope. Vegetation can be selectively planted in designated areas to reduce soil erosion and fully utilize land resources.

[0064] Taking a certain abandoned mine site as an example, the locations of exploration points ZK1-ZK11 and the three profiles I-I′, II-II′, and III-III′ selected along the main exploration line on the slope of the abandoned mine site are as follows: Figure 3 As shown.

[0065] The slope is approximately 300m high and 30° in gradient, classifying it as a typical medium-angle bedding slope. Based on geological survey data and on-site landslide reconnaissance, it is preliminarily determined that the slope is more likely to experience mid-level and shallow landslides, while the possibility of deep landslides (above 25m) is relatively low.

[0066] Based on the on-site landslide survey, the possibility of deep, medium, and shallow landslides on the slope has been preliminarily determined. For areas where deep landslides (above 25m) are likely to occur, the installation of solar panels or wind turbines will not be considered; instead, the slope can be reinforced and restored as a vegetation-based ecosystem.

[0067] For slopes initially identified as prone to mid-level and shallow landslides, slope stability was analyzed before and after the establishment of photovoltaic or wind power systems. During the stability analysis, the profile was divided into sections, and the range of potential dangerous landslide surfaces was automatically searched using the Slide software and the simple distribution method. Referring to the calculation method recommended in Section 5.3 of the People's Republic of China Geological and Mineral Industry Standard "Technical Specification for Design and Construction of Landslide Prevention Engineering" (DZ / T0219-2006), the transfer coefficient method was mainly used for broken-line landslides. For slopes with a high probability of mid-level instability, reinforcement design is required to prevent landslides along the clay layer. Shallow landslides are treated with reinforcement. On slopes that meet stability requirements, the impact of adding solar panel loads and wind turbines on the slope system stability was analyzed.

[0068] Step 1: Mid-layer sliding stability analysis

[0069] During stability analysis, it is necessary to determine the specific location and approximate extent of the potential sliding surface of the slope. To accurately locate the potential sliding surface and avoid errors from manually defining it, the Slide software is used to automatically search for the critical sliding surface of the slope using the simple method. See the specific search results below. Figure 4 , 5 As shown in 6, 7, 8, and 9.

[0070] The slope profiles of the abandoned mine site, I-I′, II-II′, and III-III′, were divided into sections. Using Slide software and the simple distribution method, the range of potential dangerous sliding surfaces was automatically searched. Referring to the calculation method recommended in Section 5.3 of the People's Republic of China Geological and Mineral Industry Standard "Technical Specification for Design and Construction of Landslide Prevention Engineering" (DZ / T0219-2006), for broken-line sliding, the transfer coefficient method was mainly used to verify the slope stability coefficient and residual sliding force. The following conclusions can be drawn:

[0071] (1) The sliding surface morphology of the slope is mainly a broken line sliding, with a depth between 10m and 20m, which belongs to the middle layer sliding.

[0072] (2) Overall, the slope sections II′ and III-III′ are basically stable under different working conditions, meeting the safety factor requirements of the standard landslide prevention and control project; the II-II′ section can also maintain self-stability under natural conditions and blasting conditions.

[0073] (3) Since the transfer coefficient method uses a two-dimensional model, it does not consider the influence of slope friction. In addition, under the heavy rain condition, the extreme case of heavy rainfall saturating the entire slope is considered. Therefore, the above calculation results are conservative.

[0074] Given the current condition of the slope, the likelihood of mid-layer instability (i.e., sliding along the completely weathered clay layer) is relatively low in sections II′ and III-III′, while the likelihood of mid-layer instability is relatively high in section II-II′. Therefore, reinforcement design is required to prevent the slope from sliding along the clay layer.

[0075] Step 2: Shallow Sliding Stability Analysis

[0076] Based on the on-site situation, the problem of shallow landslides occurring locally on the slope is quite prominent. The shallow slope stability analysis is discussed in two scenarios: first, the safety reserve of slopes currently showing signs of sliding is analyzed; second, if sliding occurs on the slope surface and a free face appears, the remaining sliding range and the possibility of further sliding are analyzed.

[0077] Based on the survey data and referring to the calculation method recommended in Section 5.3 of the People's Republic of China Geological and Mineral Resources Industry Standard "Technical Specification for Design and Construction of Landslide Prevention Engineering" (DZ / T0219-2006), for broken-line sliding, the transfer coefficient method is mainly used, while finite element methods can also be considered comprehensively. The transfer coefficient method is a practical landslide stability analysis method created by Chinese engineers. Because this method is simple to calculate and can provide design thrust for landslide control, it has been widely used in engineering and is listed as a recommended method in national and industry standards. The stability of landslide No. 11 at section I-I′, landslide No. 7 at section II-II′, and landslide No. 3 at section III-III′ (under two different working conditions) and the corresponding landslide thrust are shown. From the above analysis of the shallow slopes showing signs of landslides, it can be seen that the shallow slopes are currently basically in a critical state or have already partially slid. The possibility of further collapse at the free surface of the rear edge of landslides No. 11 and No. 3 is relatively small, and they can remain stable. However, under the influence of prolonged rainfall and other factors, the structural parameters will further decrease, and instability may occur under long-term creep. Therefore, enhanced monitoring and localized reinforcement are necessary.

[0078] Step 3: Stability analysis of the slope after installing the solar panels and wind turbine.

[0079] Based on the on-site investigation and quantitative stability analysis, the following conclusions can be drawn:

[0080] (1) As long as the deep bedding structure of the slope is not cut off to form a free surface during the excavation process, deep sliding is almost impossible before and after the installation of solar panels on the slope.

[0081] (2) The slopes of sections II′ and III-III′ are less likely to experience mid-level instability, and reinforcement treatment is mainly aimed at shallow sliding. Section II-II′ can also maintain self-stability under natural conditions and blasting conditions, but the slopes are more likely to experience mid-level instability, and reinforcement treatment is required.

[0082] The above analysis shows that for the three slope profiles, the slopes remain stable before and after adding solar panels and wind turbine loads, making them suitable for constructing photovoltaic and wind power generation systems. However, proper slope monitoring and safety measures are necessary during installation to prevent accidents.

[0083] The wind-solar hybrid distributed generation system prioritizes supplying local loads. When there is a surplus of electricity to meet the load demand, it utilizes an energy storage system for energy storage or connects to the grid. When the power generation is insufficient, the grid compensates for the shortfall.

[0084] The installation of solar panels in a photovoltaic power generation system mainly considers azimuth angle, tilt angle, and array spacing.

[0085] (1) Azimuth and tilt angle

[0086] The installation of solar panels directly affects the power generation efficiency of photovoltaic arrays. Currently, photovoltaic power generation systems include tracking and fixed types, but tracking systems are more expensive, so fixed systems are more commonly used. For fixed photovoltaic systems, the selection of the azimuth and tilt angles of the solar panels is crucial.

[0087] Azimuth refers to the angle between the vertical plane of the array and the due south direction (a negative angle is set for eastward deviation, and a positive angle is set for westward deviation). Under normal circumstances, the angle between the vertical plane of the array and due south is 0°, that is, when the array faces due south, the annual average radiation is the greatest, and the power generation of the solar panels is also the greatest.

[0088] The tilt angle refers to the angle between the plane of the solar array and the horizontal ground. Ideally, this angle should be chosen when the array's annual power generation is at its maximum. The optimal tilt angle is related to the local latitude and is also influenced by the annual power generation allocation requirements. It can be calculated using specialized photovoltaic design software such as PVSYST and RETScreen. Kunming City is located between 24°23' and 26°22' north latitude, and the tilt angle for solar panel installation is between 30° and 45°.

[0089] By converting the solar radiation on the horizontal surface obtained from the weather station into the radiation on the tilted surface of the photovoltaic array, the power generation can be calculated.

[0090] For a photovoltaic array fixed at a certain tilt angle, a relatively simple empirical formula for calculating the radiation is:

[0091] R β =S×[sin(α+β) / sinα]+D

[0092] In the formula:

[0093] R β —Total solar radiation on the photovoltaic array surface;

[0094] S—Direct solar radiation on a horizontal surface;

[0095] D—Scattered radiation;

[0096] α — Solar altitude angle at noon;

[0097] β – tilt angle of photovoltaic array.

[0098] Currently, the internationally accepted method for calculating the monthly average solar irradiance on inclined surfaces is the one proposed by Klien and Theilacker. The formula is as follows:

[0099] In the formula:

[0100] —The ratio of the monthly average solar radiation on an inclined surface to the monthly average solar radiation on a horizontal surface; —The average monthly solar diffuse radiation on a horizontal surface;

[0101] —Monthly average total radiation on a horizontal surface;

[0102] β—Tilted angle of the photovoltaic array;

[0103] ρ—Ground reflectivity;

[0104] (2) Calculation of matrix spacing

[0105] ①On the horizontal plane

[0106] When a photovoltaic power station has a large power output, it is necessary to arrange solar cell arrays in a row to determine the distance between the arrays. The general principle for determining the spacing according to the national standard formula is that the solar cell arrays should not be shaded from 9:00 am to 3:00 pm on the winter solstice.

[0107] The calculation formula is as follows:

[0108]

[0109] D – Front and rear spacing;

[0110] —This represents the latitude of the photovoltaic system (positive for the Northern Hemisphere, negative for the Southern Hemisphere);

[0111] H – is the vertical height from the bottom edge of the rear photovoltaic modules to the top of the front obstruction.

[0112] ②On the slope

[0113] For slopes of mine waste dumps, when installing solar panels on slopes that meet stability requirements, the installation method can be based on the actual slope angle. When the slope angle is close to the calculated slope angle of the local solar panel array, the solar panels can be laid parallel to the slope. For example, if the slope of a certain mine waste dump is approximately 30°, the solar panels can be laid parallel to the slope. Figure 10 , 11 As shown.

[0114] This method of installation allows for flexible spacing between rows of solar panels, preventing them from obstructing each other. However, it presents challenges when constructing on slopes compared to flat surfaces. The slope surface can be covered with mortar to prevent soil erosion. The foundation piles supporting the solar panel arrays must be constructed considering both the load-bearing capacity of the slope and the stability of the piles.

[0115] Wind power generation systems can utilize existing wind power technology and be designed with reference to relevant national standards such as GB 51096 "Design Code for Wind Power Plants," and installed on slopes that meet the design specifications. On slopes where sunlight, wind force, or slope angle are unsuitable for solar panel installation, vegetation cover can be implemented in the reclaimed area. The vegetation can be selected in zones, including fruit trees, crops, ornamental trees, fungi, and flowers, with dynamic monitoring during planting to prevent severe soil erosion. Simultaneously, a rainwater harvesting system can be constructed on the slope, zoned along the solar panel pile foundations. This not only solves the slope drainage problem but also allows for the reuse of collected rainwater for irrigation of the reclaimed area vegetation and cleaning of the solar panels.

[0116] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A low-carbon deployment method for distributed wind-solar hybrid power generation ecosystems on slopes, characterized in that: include: (1) Analysis of the sliding stability of the middle layer; In stability analysis, the specific location and approximate range of the potential sliding surface of the slope are determined. For intermediate sliding slopes, the Slide method is used to automatically search for the critical sliding surface of the slope. (2) Shallow sliding stability analysis Analyze the safety reserves of slopes that currently show signs of sliding; if there is sliding on the slope surface and a free face appears, analyze the remaining sliding range of the slope and the possibility of sliding again. (3) Slope stability analysis after installing solar panels and wind turbines On slopes that meet stability requirements, the impact of adding solar panel loads and wind turbines on the stability of the slope system is analyzed. Considering the effects of sunlight, wind force, and slope angle, a wind-solar hybrid distributed power generation system is installed to prioritize supplying local loads. When there is a surplus of electricity to meet the load demand, energy storage system is used for energy storage or grid connection. When power generation is insufficient, the grid compensates for it. The distributed wind-solar hybrid power generation ecosystem on slopes includes a wind power system, a photovoltaic power system, a vegetation reclamation ecosystem, and a rainwater harvesting system. The wind power system is designed to be located at the higher part of the slope, while the photovoltaic power system is installed on the middle part of the slope where there is good sunlight. The rainwater harvesting system is laid along the slope, and an artificial lake or reservoir is built at the bottom of the slope to store the collected rainwater. The vegetation reclamation ecosystem covers the entire slope in areas where sunlight, wind, or slope angle are not suitable for installing solar panels.

2. The method according to claim 1, characterized in that: The surface of the slope is covered with mortar to prevent soil erosion and to support the pile foundations of the solar cell array.

3. The method according to claim 1, characterized in that: On slopes where sunlight, wind, and slope angle are unsuitable for installing solar panels, vegetation cover should be carried out in the reclamation area. The vegetation in the reclamation area should be selected in zones, and dynamic monitoring should be carried out during planting to prevent serious soil erosion.

4. The method according to claim 3, characterized in that: On the slope, a rainwater harvesting system is constructed, arranged in sections along the pile foundations of the solar panels.

5. The method according to claim 1, characterized in that: In (1), the slope profile of the abandoned mine is divided into blocks. The range of potential dangerous sliding surfaces of the slope is automatically searched by using the Slide software and the simple distribution method. The calculation method of the mining industry standard "Technical Specification for Design and Construction of Landslide Prevention Engineering" is adopted. For broken line sliding, the transfer coefficient method is used to verify the slope stability coefficient and the remaining sliding force.

6. The method according to claim 1, characterized in that: In (3), the installation process of solar panels in the photovoltaic power generation system is as follows: 3.1 Azimuth and Inclination For a photovoltaic array fixed at a certain tilt angle, a relatively simple empirical formula for calculating the radiation is: In the formula: - Total solar radiation on the photovoltaic array surface; S - Direct solar radiation on a horizontal surface; D - Scattered radiation; α - The solar altitude angle at noon; β - Photovoltaic array tilt angle; The method for calculating the monthly average solar irradiance on an inclined surface is as follows: In the formula: - The ratio of the monthly average solar radiation on an inclined surface to the monthly average solar radiation on a horizontal surface; - Average monthly solar diffuse radiation on a horizontal surface; -Monthly average total radiation on a horizontal surface; β - Photovoltaic array tilt angle; ρ -Ground reflectivity; 3.2 Calculation of matrix spacing On the horizontal plane: When the photovoltaic power station has a large power output, it is necessary to arrange the solar cell arrays one after another to determine the distance between the arrays. The principle for determining the spacing according to the national standard formula is: the solar cell arrays should not be shaded from 9:00 am to 3:00 pm on the winter solstice. The calculation formula is as follows: In the formula: D - represents the front and rear spacing; - represents the latitude of the photovoltaic system, with positive values ​​for the Northern Hemisphere and negative values ​​for the Southern Hemisphere; H - is the vertical height from the bottom edge of the rear photovoltaic modules to the top edge of the front obstruction; On the slope: For slopes of mine waste dumps, when installing solar panels on slopes that meet stability requirements, the panels should be laid according to the actual slope inclination angle. When the slope angle is close to the calculated inclination angle of the local solar panel array, the solar panels should be laid parallel to the slope.

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