A method for ecological restoration of a mine rock slope

Abstract

This invention belongs to the field of ecological restoration technology for mine rock slopes, and discloses a method for ecological restoration of mine rock slopes. This invention, through a method for determining the instability mechanism of mine rock slopes, can scientifically analyze the causes of landslide disasters and obtain relatively accurate results for determining the instability of mine rock slopes, thus providing a theoretical basis for the reinforcement of mine rock slopes. Simultaneously, through a method for monitoring the deformation of mine rock slopes, the point cloud data of the slope is divided into block and non-block components. The block deformation method is used to detect deformations such as rotation and displacement of the blocks, while the point cloud subtraction method is used to detect changes in the non-block components. By superimposing the results of the two parts, the overall deformation of the slope is comprehensively analyzed and judged. Compared with the traditional point cloud subtraction method, this method can more accurately and comprehensively detect the deformation of the rock mass.

Description

Technical Field

[0001] This invention belongs to the field of ecological restoration technology for rock slopes in mines, and particularly relates to a method for ecological restoration of rock slopes in mines. Background Technology

[0002] Studies on rock mass strength and stability have confirmed that faults, bedding, joints, and foliation within the rock mass are controlling factors for slope stability. Therefore, structural planes are considered a particularly important influencing factor. The strength of structural planes is much lower than that of the rock itself. Rock mass slopes stable based on the strength of the rock blocks can reach hundreds of meters in height; however, when structural planes in unfavorable orientations are present within the rock mass, even slopes of relatively small height may fail. The fundamental reason is that the presence of structural planes in the rock mass reduces its overall strength, increases its deformability and rheological properties, and creates heterogeneity and discontinuity. Numerous slope failures demonstrate that shear slippage, tensile failure, and displacement deformation at the boundaries of one or more structural plane combinations are the main causes of slope instability. From the perspective of slope stability, the following key characteristics of rock mass structural planes should be studied in particular: the genetic type of structural planes, the number and quantity of structural plane groups, the continuity and spacing of structural planes, the undulation and roughness of structural planes, the surface bonding state and infill of structural planes, the condition of structural planes, and their relationship with the free face of the slope. These characteristics and their combinations will have a significant impact on slope stability, possible landslide types, rock mass strength, etc.; however, existing methods for ecological restoration of mine rock slopes are inefficient, resulting in poor stability of mine rock slopes and easy soil and water loss.

[0003] Based on the above analysis, the problems and defects of the existing technology are as follows: the existing methods for ecological restoration of rock slopes in mines have low slope efficiency, resulting in poor stability of rock slopes in mines and easy soil and water loss. Summary of the Invention

[0004] To address the problems existing in the prior art, this invention provides a method for ecological restoration of rocky slopes in mines.

[0005] This invention is implemented as follows: A method for ecological restoration of rocky slopes in mines includes:

[0006] Step 1: Fix hexagonal twisted wire mesh on the rocky slope of the mine; and spray granular soil.

[0007] Step 2: Lay ecological substrate on the surface of the rock slope in the mine; and fix the reinforced Macpair.

[0008] Step 3: Determine the instability mechanism of the mine rock slope and monitor the deformation of the mine rock slope.

[0009] Furthermore, the method for determining the instability mechanism of mine rock slopes is as follows:

[0010] (1) Establish a three-dimensional numerical analysis model of the rock slope in the mine using a modeling program; optimize the three-dimensional numerical analysis model; and determine the critical displacement value S for instability. F ;

[0011] The sliding surface displacement value S of the rock slope in the mine was determined using the strength reduction method. min ;

[0012] Multiple monitoring points were set up on the profile of the rock slope of the mine to be judged, and the displacement S of each monitoring point k under different reduction coefficients i was determined. ki and displacement increment ΔS ki =S ki -S k(i-1) Where i-1 is a reduction factor that is adjacent to the reduction factor i and smaller than i;

[0013] If there exists a monitoring point k satisfying ΔS ki ≥ΔS k(i-1) +ΔS k(i-2) Then determine the critical reduction coefficient i F = i; where i-2 is a reduction factor that is one reduction factor away from the reduction factor i and is smaller than i;

[0014] If monitoring point k satisfies Then monitoring point k is the sliding body monitoring point k'; where im = max(i), which is the maximum reduction coefficient;

[0015] Determine the critical displacement value based on the sliding body monitoring point k'.

[0016] (2) Determine the stability cloud map of the rock slope in the mine under different reduction coefficients;

[0017] Using the determined critical displacement value S F The model calculates the plastic failure status and velocity value of any point a in the mine rock slope, classifies the stability of any point a in the mine rock slope, and obtains the stability cloud map of the mine rock slope under different reduction coefficients.

[0018] (3) Based on the results of the previous step, compare and analyze the evolution characteristics of the stability of the rock slope in the mine under different reduction coefficients, and determine the instability mechanism of the rock slope in the mine.

[0019] Wherein, the sliding surface displacement value S min The specific method of determination is as follows:

[0020] Based on the shear strain increment contour map of the mine rock slope after strength reduction, the slip surface of the mine rock slope is determined, and the outline of the slip surface is marked. The outline is compared with the displacement contour map of the mine rock slope after strength reduction. The displacement value S corresponding to the displacement contour line that basically coincides with the slip surface outline is the slip surface displacement value S. min .

[0021] Furthermore, the establishment of a three-dimensional numerical analysis model of the mine rock slope through a modeling program includes:

[0022] Based on the results of engineering geological survey and mechanical test, a FLAC3D three-dimensional numerical analysis model of the mine rock slope was established, and a profile was set in the model along the main sliding direction of the mine rock slope according to the horizontal displacement diagram of the model.

[0023] Furthermore, the strength reduction method specifically involves dividing the strength index of the soil and rock layer by the reduction coefficient i to obtain a new set of parameters for numerical calculation, thereby simulating different scenarios of a mine rock slope from its natural state to complete failure.

[0024] Furthermore, the reduction factor i starts from 1 and gradually increases or decreases with a tolerance of 0.01; the condition for terminating the increase of the reduction factor is that the maximum unbalanced force ratio of the mine rock slope is not less than 10. -5 The termination condition for the decrease is that the ratio of the maximum unbalanced force on the rock slope of the mine is not greater than 10. -5 ;

[0025] The strength indices of the soil and rock layer are the internal friction angle φ and the cohesion c.

[0026] Furthermore, the monitoring points include at least the locations where the slope of the mine rock slope changes, and / or the junctions between the mine rock slope and the platforms within the mine rock slope.

[0027] Furthermore, the basis for the stability classification is as follows:

[0028] If any point 'a' on the rock slope of the mine is not undergoing shear failure and its velocity value is less than 10... -5 If m / time step, then the stability of any point a is stable, that is, point a is in a stable phase;

[0029] If any point 'a' on the rock slope of the mine is undergoing shear failure, but its velocity value is less than 10... -5 If m / time step, then the stability of any point a is basically stable, that is, point a is in a basically stable stage;

[0030] If the velocity value at any point 'a' on the rock slope of the mine is not less than 10⁻⁵ m / h, but the displacement value is less than S… FIf the stability of any point a is unstable, then point a is in an unstable stage.

[0031] If the displacement value at any point a on the rock slope of the mine is not less than S F If the stability of any point a is unstable, then point a is in an unstable stage.

[0032] Furthermore, the method for monitoring the deformation of rock slopes in mines is as follows:

[0033] 1) Configure the parameters of the 3D laser scanner; use the 3D laser scanner to perform multiple scans of the rock slope of the mine to be tested to obtain multiple sets of point cloud data; calibrate the point cloud data; stitch together the single sets of point cloud data to form an overall point cloud data, and then import it into the point cloud processing software for modeling;

[0034] 2) Overlay and compare multiple sets of point cloud data to form a chromatogram of point cloud changes; visually judge the global deformation of the rock mass from the chromatogram; then extract structural surfaces from a single model and number the structural surfaces; combine the extracted structural surfaces into a block model;

[0035] 3) Obtain rotation, displacement and area change data for each block model in multiple periods, and combine the data with the chromatogram data to obtain the overall deformation trend data of the mine rock slope, so as to realize the all-round deformation monitoring of the mine rock slope.

[0036] Furthermore, the addition of ground-penetrating radar and a 3D laser scanner allows for simultaneous scanning of the rock slopes in the mine, increasing the ability of ground-penetrating radar to detect the direction of rock fissures.

[0037] Furthermore, the point cloud data needs to be denoised before being stitched together, and then gaps need to be filled in to make the point cloud image complete.

[0038] The voxel filtering algorithm filters part of the point cloud data. Then, the curvature values ​​of each point in the retained point cloud data are sorted. The point with the smallest curvature value is used as the seed point for region growth. This process continues until the point set around the seed point no longer meets the required normal angle difference and curvature value. Finally, the point set that meets the normal angle difference and curvature value is integrated to fit these point sets and obtain the structural surface equation.

[0039] Based on the above technical solutions and the technical problems solved, the advantages and positive effects of the technical solution to be protected by this invention are as follows:

[0040] First, addressing the technical problems existing in the prior art and the difficulty in solving them, this paper, closely combining the technical solution to be protected by this invention with the results and data from the research and development process, provides a detailed and in-depth analysis of how the technical solution of this invention solves the technical problems and the inventive technical effects brought about by solving these problems. The specific description is as follows:

[0041] This invention provides a method for determining the instability mechanism of mine rock slopes, enabling scientific analysis of the causes of landslide disasters and obtaining relatively accurate results for assessing mine rock slope instability, thus providing a theoretical basis for mine rock slope reinforcement. Simultaneously, a method for monitoring mine rock slope deformation divides the slope's point cloud data into block and non-block components. The block deformation method detects deformations such as rotation and displacement of the blocks, while the point cloud subtraction method detects changes in the non-block components. By superimposing the results of both parts, a comprehensive analysis is performed to determine the overall deformation of the slope. Compared to the traditional point cloud subtraction method, this method can more accurately and comprehensively detect the deformation of the rock mass.

[0042] Second, considering the technical solution as a whole or from a product perspective, the technical effects and advantages of the technical solution to be protected by this invention are specifically described as follows:

[0043] This invention provides a method for determining the instability mechanism of mine rock slopes, enabling scientific analysis of the causes of landslide disasters and obtaining relatively accurate results for assessing mine rock slope instability, thus providing a theoretical basis for mine rock slope reinforcement. Simultaneously, a method for monitoring mine rock slope deformation divides the slope's point cloud data into block and non-block components. The block deformation method detects deformations such as rotation and displacement of the blocks, while the point cloud subtraction method detects changes in the non-block components. By superimposing the results of both parts, a comprehensive analysis is performed to determine the overall deformation of the slope. Compared to the traditional point cloud subtraction method, this method can more accurately and comprehensively detect the deformation of the rock mass. Attached Figure Description

[0044] Figure 1 This is a flowchart of a method for ecological restoration of rocky slopes in mines, provided in an embodiment of the present invention.

[0045] Figure 2 This is a flowchart of a method for determining the instability mechanism of rock slopes in mines, provided in an embodiment of the present invention.

[0046] Figure 3 This is a flowchart of a method for monitoring deformation of rock slopes in mines, provided in an embodiment of the present invention. Detailed Implementation

[0047] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0048] To enable those skilled in the art to fully understand how the present invention is specifically implemented, this section provides an explanatory description of the embodiments that expand upon the technical solutions of the claims.

[0049] like Figure 1 As shown, the present invention provides a method for ecological restoration of rocky slopes in mines, comprising the following steps:

[0050] S101, fix hexagonal double-twisted mesh on the rocky slope of the mine; and spray granular soil;

[0051] S102, Lay ecological substrate on the surface of the rock slope of the mine; and fix the reinforced Mac mat;

[0052] S103 determines the instability mechanism of rock slopes in mines and monitors the deformation of rock slopes in mines.

[0053] like Figure 2 As shown, the method for determining the instability mechanism of mine rock slopes provided by this invention is as follows:

[0054] S201, A three-dimensional numerical analysis model of the mine rock slope is established using a modeling program; the three-dimensional numerical analysis model is optimized; and the critical displacement value S for instability is determined. F ;

[0055] The sliding surface displacement value S of the rock slope in the mine was determined using the strength reduction method. min ;

[0056] Multiple monitoring points were set up on the profile of the rock slope of the mine to be judged, and the displacement S of each monitoring point k under different reduction coefficients i was determined. ki and displacement increment ΔS ki =S ki -S k(i-1) Where i-1 is a reduction factor that is adjacent to the reduction factor i and smaller than i;

[0057] If there exists a monitoring point k satisfying ΔS ki ≥ΔS k(i-1) +ΔS k(i-2) Then determine the critical reduction coefficient i F = i; where i-2 is a reduction factor that is one reduction factor away from the reduction factor i and is smaller than i;

[0058] If monitoring point k satisfies Then monitoring point k is the sliding body monitoring point k'; where im = max(i), which is the maximum reduction coefficient;

[0059] Determine the critical displacement value based on the sliding body monitoring point k'.

[0060] S202, Determine the stability cloud map of mine rock slopes under different reduction coefficients;

[0061] Using the determined critical displacement value SF and the plastic failure status and velocity value of any point a in the mine rock slope calculated by the model, the stability of any point a in the mine rock slope is divided, and the stability cloud map of the mine rock slope under different reduction coefficients is obtained.

[0062] S203. Based on the results of the previous step, we will compare and analyze the evolution characteristics of the stability of mine rock slopes under different reduction coefficients, and determine the instability mechanism of mine rock slopes.

[0063] Wherein, the sliding surface displacement value S min The specific method of determination is as follows:

[0064] Based on the shear strain increment contour map of the mine rock slope after strength reduction, the slip surface of the mine rock slope is determined, and the outline of the slip surface is marked. The outline is compared with the displacement contour map of the mine rock slope after strength reduction. The displacement value S corresponding to the displacement contour line that basically coincides with the slip surface outline is the slip surface displacement value S. min .

[0065] The present invention provides a three-dimensional numerical analysis model for establishing the rock slope of a mine using a modeling program, including:

[0066] Based on the results of engineering geological survey and mechanical test, a FLAC3D three-dimensional numerical analysis model of the mine rock slope was established, and a profile was set in the model along the main sliding direction of the mine rock slope according to the horizontal displacement diagram of the model.

[0067] The strength reduction method provided by this invention specifically involves dividing the strength index of the soil and rock layer by the reduction coefficient i to obtain a new set of parameters for numerical calculation, thereby simulating different situations of a mine rock slope from its natural state to complete failure.

[0068] The reduction coefficient i provided by this invention starts from 1 and gradually increases or decreases with a tolerance of 0.01; the termination condition for the increase of the reduction coefficient is that the maximum unbalanced force ratio of the rock slope in the mine is not less than 10. -5 The decreasing termination condition is that the maximum unbalanced force ratio of the rock slope in the mine is not greater than 10⁻⁵.

[0069] The strength indices of the soil and rock layer are the internal friction angle φ and the cohesion c.

[0070] The monitoring points provided by this invention include at least the locations where the slope of the mine rock slope changes, and / or the junctions between the mine rock slope and the platforms within the mine rock slope.

[0071] The stability classification provided by this invention is based on:

[0072] If any point 'a' on the rock slope of the mine is not undergoing shear failure and its velocity value is less than 10... -5 If m / time step, then the stability of any point a is stable, that is, point a is in a stable phase;

[0073] If any point 'a' on the rock slope of the mine is undergoing shear failure, but its velocity value is less than 10... -5 If m / time step, then the stability of any point a is basically stable, that is, point a is in a basically stable stage;

[0074] If the velocity value at any point 'a' on the rock slope of the mine is not less than 10 -5 m / hour step, but the displacement value is less than S F If the stability of any point a is unstable, then point a is in an unstable stage.

[0075] If the displacement value at any point a on the rock slope of the mine is not less than S F If the stability of any point a is unstable, then point a is in an unstable stage.

[0076] like Figure 3 As shown, the method for monitoring deformation of rock slopes in mines provided by this invention is as follows:

[0077] S301: Configure the parameters of the 3D laser scanner; use the 3D laser scanner to perform multiple scans of the rock slope of the mine under test to obtain multiple sets of point cloud data; calibrate the point cloud data; stitch together the single sets of point cloud data to form an overall point cloud data, and then import it into the point cloud processing software for modeling.

[0078] S302: Multiple sets of point cloud data are overlaid and compared to form a chromatogram of point cloud changes; the global deformation of the rock mass can be intuitively judged from the chromatogram; then, structural surfaces are extracted from a single model and numbered; the extracted structural surfaces are combined to form a block model.

[0079] S303 acquires rotation, displacement, and area change data for various block models across multiple periods, and combines this data with chromatogram data to obtain overall deformation trend data for mine rock slopes, enabling comprehensive deformation monitoring of mine rock slopes.

[0080] The invention provides a method for simultaneously scanning mine rock slopes with both ground-penetrating radar and a 3D laser scanner, thereby increasing the detection capability of ground-penetrating radar to detect the direction of rock fractures.

[0081] The point cloud data provided by this invention needs to be denoised before splicing, and then gaps need to be filled in to make the point cloud image complete.

[0082] The voxel filtering algorithm filters part of the point cloud data. Then, the curvature values ​​of each point in the retained point cloud data are sorted. The point with the smallest curvature value is used as the seed point for region growth. This process continues until the point set around the seed point no longer meets the required normal angle difference and curvature value. Finally, the point set that meets the normal angle difference and curvature value is integrated to fit these point sets and obtain the structural surface equation.

[0083] To demonstrate the inventiveness and technical value of the technical solution of this invention, this section provides specific product or related technology application examples of the technical solution claimed.

[0084] This invention provides a method for determining the instability mechanism of mine rock slopes, enabling scientific analysis of the causes of landslide disasters and obtaining relatively accurate results for assessing mine rock slope instability, thus providing a theoretical basis for mine rock slope reinforcement. Simultaneously, a method for monitoring mine rock slope deformation divides the slope's point cloud data into block and non-block components. The block deformation method detects deformations such as rotation and displacement of the blocks, while the point cloud subtraction method detects changes in the non-block components. By superimposing the results of both parts, a comprehensive analysis is performed to determine the overall deformation of the slope. Compared to the traditional point cloud subtraction method, this method can more accurately and comprehensively detect the deformation of the rock mass.

[0085] It should be noted that embodiments of the present invention can be implemented in hardware, software, or a combination of both. The hardware portion can be implemented using dedicated logic; the software portion can be stored in memory and executed by a suitable instruction execution system, such as a microprocessor or dedicated-design hardware. Those skilled in the art will understand that the above-described devices and methods can be implemented using computer-executable instructions and / or included in processor control code, for example, such code provided on a carrier medium such as a disk, CD, or DVD-ROM, a programmable memory such as read-only memory (firmware), or a data carrier such as an optical or electronic signal carrier. The devices and modules of the present invention can be implemented by hardware circuitry such as very large-scale integrated circuits or gate arrays, semiconductors such as logic chips, transistors, or programmable hardware devices such as field-programmable gate arrays, programmable logic devices, etc., or by software executed by various types of processors, or by a combination of the above-described hardware circuitry and software, such as firmware.

[0086] The embodiments of the present invention have achieved some positive results during the research and development or use process, and have indeed great advantages compared with the prior art. The following content describes them in conjunction with the data, charts and other information of the experimental process.

[0087] This invention provides a method for determining the instability mechanism of mine rock slopes, enabling scientific analysis of the causes of landslide disasters and obtaining relatively accurate results for assessing mine rock slope instability, thus providing a theoretical basis for mine rock slope reinforcement. Simultaneously, a method for monitoring mine rock slope deformation divides the slope's point cloud data into block and non-block components. The block deformation method detects deformations such as rotation and displacement of the blocks, while the point cloud subtraction method detects changes in the non-block components. By superimposing the results of both parts, a comprehensive analysis is performed to determine the overall deformation of the slope. Compared to the traditional point cloud subtraction method, this method can more accurately and comprehensively detect the deformation of the rock mass.

[0088] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any modifications, equivalent substitutions, and improvements made by those skilled in the art within the scope of the technology disclosed in the present invention, and within the spirit and principles of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A method for ecological restoration of rocky slopes in mines, characterized in that, The method for ecological restoration of rocky slopes in mines includes the following steps: Step 1: Fix hexagonal twisted wire mesh on the rocky slope of the mine; and spray granular soil. Step 2: Lay ecological substrate on the surface of the rock slope in the mine; and fix the reinforced Macpair. Step 3: Determine the instability mechanism of the mine rock slope; and monitor the deformation of the mine rock slope. The method for determining the instability mechanism of mine rock slopes is as follows: (1) establishing a three-dimensional numerical analysis model of the mine rock slope by a modeling program; optimizing the three-dimensional numerical analysis model; determining a critical displacement value S F ; The sliding surface displacement value S of the rock slope in the mine was determined using the strength reduction method. min ; Multiple monitoring points were set up on the profile of the rock slope of the mine to be judged, and the displacement S of each monitoring point k under different reduction coefficients i was determined. ki and displacement increment ΔS ki =S ki -S k(i-1) Where i-1 is a reduction factor that is adjacent to the reduction factor i and smaller than i; If there exists a monitoring point k satisfying ΔS ki ≥ΔS k(i-1) +ΔS k(i-2) Then determine the critical reduction coefficient i F = i; where i-2 is a reduction factor that is one reduction factor away from the reduction factor i and is smaller than i; If monitoring point k satisfies S kim ≥S min Then monitoring point k is the sliding body monitoring point k′; where im = max(i), which is the maximum reduction coefficient; Based on the monitoring point k′ of the sliding body, the critical displacement value S is determined. F =min(S) k ′ iF ) (2) Determine the stability cloud map of the rock slope in the mine under different reduction coefficients; Using the determined critical displacement value S F The model calculates the plastic failure status and velocity value of any point a within the mine rock slope, classifies the stability of any point a within the mine rock slope, and obtains stability cloud maps of the mine rock slope under different reduction coefficients. (3) Based on the results of the previous step, compare and analyze the evolution characteristics of the stability of the rock slope in the mine under different reduction coefficients, and determine the instability mechanism of the rock slope in the mine. Wherein, the sliding surface displacement value S min The specific determination method is as follows: Based on the shear strain increment contour map of the mine rock slope after strength reduction, the slip surface of the mine rock slope is determined, and the outline of the slip surface is marked. The outline is compared with the displacement contour map of the mine rock slope after strength reduction. The displacement value S corresponding to the displacement contour line that basically coincides with the slip surface outline is the slip surface displacement value S. min .

2. The method for ecological restoration of rocky slopes in mines as described in claim 1, characterized in that, The process of establishing a three-dimensional numerical analysis model of the mine rock slope using a modeling program includes: Based on the results of engineering geological survey and mechanical test, a FLAC3D three-dimensional numerical analysis model of the mine rock slope was established, and a profile was set in the model along the main sliding direction of the mine rock slope according to the horizontal displacement diagram of the model.

3. The method for ecological restoration of rocky slopes in mines as described in claim 1, characterized in that, The strength reduction method specifically involves dividing the strength index of the soil and rock layer by the reduction coefficient i to obtain a new set of parameters for numerical calculation, thereby simulating different situations of a mine rock slope from its natural state to complete failure.

4. The method for ecological restoration of rocky slopes in mines as described in claim 1, characterized in that, The reduction factor i starts from 1 and gradually increases or decreases with a tolerance of 0.01; the condition for terminating the increase of the reduction factor is that the maximum unbalanced force ratio of the mine rock slope is not less than 10. -5 The termination condition for the decrease is that the ratio of the maximum unbalanced force on the rock slope of the mine is not greater than 10. -5 ; The strength indicators of the soil and rock layers are the internal friction angle φ and the cohesion c.

5. The method for ecological restoration of rocky slopes in mines as described in claim 1, characterized in that, The monitoring points include at least the locations where the slope of the mine rock slope changes, and / or the junctions between the mine rock slope and the platforms within the mine rock slope.

6. The method for ecological restoration of rocky slopes in mines as described in claim 1, characterized in that, The basis for the stability classification is: If any point 'a' within the rock slope of the mine is not undergoing shear failure and its velocity value is less than 10... -5 If m / time step, then the stability of any point a is stable, that is, point a is in a stable phase; If any point 'a' within the rock slope of the mine is undergoing shear failure, but its velocity value is less than 10... -5 If m / time step, then the stability of any point a is basically stable, that is, point a is in a basically stable stage; If the velocity value at any point 'a' within the rocky slope of the mine is not less than 10 -5 m / hour step, but the displacement value is less than S F If the stability of any point a is unstable, then point a is in an unstable stage. If the displacement value of any point a within the rocky slope of the mine is not less than S F If the stability of any point a is unstable, then point a is in an unstable stage.

7. The method for ecological restoration of rocky slopes in mines as described in claim 1, characterized in that, The method for monitoring deformation of rock slopes in mines is as follows: 1) Configure the parameters of the 3D laser scanner; use the 3D laser scanner to perform multiple scans of the rock slope of the mine to be tested to obtain multiple sets of point cloud data; calibrate the point cloud data; stitch together the single sets of point cloud data to form an overall point cloud data, and then import it into the point cloud processing software for modeling; 2) Overlay and compare multiple sets of point cloud data to form a chromatogram of point cloud changes; visually judge the global deformation of the rock mass from the chromatogram; then extract structural surfaces from a single model and number the structural surfaces; combine the extracted structural surfaces into a block model; 3) Obtain rotation, displacement and area change data for each block model in multiple periods, and combine the data with the chromatogram data to obtain the overall deformation trend data of the mine rock slope, so as to realize the all-round deformation monitoring of the mine rock slope.

8. The method for ecological restoration of rocky slopes in mines as described in claim 7, characterized in that, The addition of ground-penetrating radar and a 3D laser scanner allows for simultaneous scanning of rock slopes in the mine, enhancing the detection of rock fissures by the ground-penetrating radar.

9. The method for ecological restoration of rocky slopes in mines as described in claim 7, characterized in that, Before stitching together point cloud data, noise reduction is required, followed by gap filling to ensure the completeness of the point cloud image. The voxel filtering algorithm filters part of the point cloud data. Then, the curvature values ​​of each point in the retained point cloud data are sorted. The point with the smallest curvature value is used as the seed point for region growth. This process continues until the point set around the seed point no longer meets the required normal angle difference and curvature value. Finally, the point set that meets the normal angle difference and curvature value is integrated to fit these point sets and obtain the structural surface equation.

Images