CN111830030A - Investigation system and method for joint fracture of mine rock mass - Google Patents
Investigation system and method for joint fracture of mine rock mass Download PDFInfo
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- 238000005065 mining Methods 0.000 claims description 15
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- G—PHYSICS
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- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
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- G06Q10/063—Operations research, analysis or management
- G06Q10/0639—Performance analysis of employees; Performance analysis of enterprise or organisation operations
- G06Q10/06395—Quality analysis or management
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
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- G06T2207/00—Indexing scheme for image analysis or image enhancement
- G06T2207/10—Image acquisition modality
- G06T2207/10004—Still image; Photographic image
Abstract
The invention provides a system and a method for investigating a mine rock joint crack, wherein the system comprises: the picture acquisition device is used for acquiring pictures of joint fractures of mine rock masses such as surrounding rocks or ore bodies; the display device is connected with the picture acquisition device and used for displaying the joint crack picture and displaying the superior joint crack characteristics obtained after the joint crack picture is manually identified by the user; and the processing device is connected with the display device, stores the superior joint fracture characteristics and automatically identifies other joint fractures of the mine rock mass according to the superior joint fracture characteristics. The method can accurately and efficiently automatically identify the joint cracks of the mine rock mass, is suitable for efficient investigation and accurate identification of the joint cracks of the mine rock mass in a surface mine or an underground mine, can efficiently and accurately obtain the occurrence characteristics and the distribution rules of the large-range joint cracks of the mine, and is favorable for providing more comprehensive data for evaluating the quality of the mine rock mass, thereby solving the problem of insufficient geological data of field engineering.
Description
Technical Field
The invention relates to the technical field of mining engineering geology, in particular to a system and a method for investigating a mine rock mass joint crack.
Background
Because the seam joints of the mining area are developed and are unfavorable for the stability of the side slope, the seam joints need to be investigated, the distribution rule of the seam joints of the mining area needs to be mastered, and effective support measures are taken.
The current joint crack investigation method is to use an artificial line measurement method to investigate the underground or slope joint crack. Because the open-pit mine steps are large in quantity, the rock mass such as surrounding rocks or an ore body exposed area is large, the underground mine roadway chamber engineering quantity is large, and the quantity is large, when a mine is subjected to joint crack manual investigation, the workload is large, the environment is severe, the efficiency is low, the safety is poor, the investigation result is often influenced by the mine environment, the subjective influence of people on the investigation result is large, the accurate reliability is poor, and accurate and comprehensive data are difficult to provide for mine rock mass quality evaluation.
Disclosure of Invention
The present invention is directed to solving at least one of the above problems.
Therefore, the invention aims to provide a mine rock mass joint crack investigation system which can accurately and efficiently automatically identify the joint cracks of the mine rock mass, is suitable for efficient investigation and accurate identification of the joint cracks of a surface mine or an underground mine, can efficiently and accurately obtain the occurrence characteristics and the distribution rules of the large-range joint cracks of the mine, and is beneficial to providing more comprehensive data for the quality evaluation of the mine rock mass, thereby solving the problem of insufficient geological data of site engineering.
Therefore, the second purpose of the invention is to provide a method for investigating the jointed crack of the mine rock mass.
In order to achieve the above object, an embodiment of the first aspect of the present invention provides a mine rock mass joint crack investigation system, including: the picture acquisition device is used for acquiring a joint fracture picture of the mine rock mass; the display device is connected with the picture acquisition device and is used for displaying the joint crack picture and displaying the superior joint crack characteristics obtained after the user carries out manual identification on the joint crack picture; and the processing device is connected with the display device, stores the superior joint fracture characteristics and automatically identifies other joint fractures of the mine rock mass according to the superior joint fracture characteristics.
In addition, the investigation system for the joint fissure of the mine rock according to the embodiment of the invention can also have the following additional technical characteristics:
in some examples, the picture taking device has a high definition camera and a three-dimensional laser head.
In some examples, the processing device includes: the storage unit is used for storing the advantageous joint fracture characteristics; and the identification unit is used for automatically identifying other joint cracks with the same or similar characteristics as the dominant joint crack.
In some examples, further comprising: and the statistical device is connected with the processing device and used for performing statistical analysis on all the joint fractures identified by the processing device and outputting the occurrence characteristics and the distribution rules corresponding to the large-range joint fractures of the mine rock mass.
In some examples, the display device is further used for displaying the occurrence characteristics and the distribution rules of the large-scale joint fractures corresponding to the mine rock mass.
In some examples, the number of dominant joint fracture features is 2 to 5 groups.
According to the mine rock mass joint crack investigation system provided by the embodiment of the invention, a high-definition mine rock mass joint crack picture is obtained by adopting a mode of combining three-dimensional laser scanning and high-definition photography, several groups of advantageous joint fracture characteristics are obtained by identifying high-definition joint fracture images of mine rock mass, further, based on the characteristics of the superior joint crack, other joint cracks with the same characteristics are automatically identified, namely, the joint crack of the mine rock mass can be accurately and efficiently and automatically identified, the method is suitable for efficient investigation and accurate identification of the joint crack of the surface mine or the underground mine, statistical analysis is carried out on the identified joint crack, the method can efficiently and accurately obtain the occurrence characteristics and the distribution rules of the large-range joint cracks of the mine, is favorable for providing more comprehensive data for the quality evaluation of mine rock mass, and solves the problem of insufficient geological data of site engineering.
In order to achieve the above object, an embodiment of a second aspect of the present invention provides a method for investigating a mine rock body joint crack, including the following steps: collecting a joint crack picture of a mine rock mass; identifying the joint crack picture to obtain the superior joint crack characteristic; and automatically identifying other joint cracks of the mine rock mass according to the superior joint crack characteristics.
In addition, the investigation method for the joint fissure of the mine rock according to the embodiment of the invention can also have the following additional technical characteristics:
in some examples, a picture of the joint fracture of the mine rock mass is acquired by a picture acquisition device having a high-definition camera and a three-dimensional laser head.
In some examples, further comprising: storing the dominant joint fracture signature; and automatically identifying other joint fractures which are the same as or similar to the superior joint fracture characteristics according to the superior joint fracture characteristics.
In some examples, further comprising: and performing statistical analysis on all the identified joint fractures, and outputting occurrence characteristics and distribution rules corresponding to the large-range joint fractures of the mine rock mass.
According to the investigation method of the mine rock mass joint crack of the embodiment of the invention, a high-definition mine rock mass joint crack picture is obtained by adopting a mode of combining three-dimensional laser scanning and high-definition photography, several groups of advantageous joint fracture characteristics are obtained by identifying high-definition joint fracture images of mine rock mass, further, based on the characteristics of the superior joint crack, other joint cracks with the same characteristics are automatically identified, namely, the joint crack of the mine rock mass can be accurately and efficiently and automatically identified, the method is suitable for efficient investigation and accurate identification of the joint crack of the surface mine or the underground mine, statistical analysis is carried out on the identified joint crack, the method can efficiently and accurately obtain the occurrence characteristics and the distribution rules of the large-range joint cracks of the mine, is favorable for providing more comprehensive data for the quality evaluation of mine rock mass, and solves the problem of insufficient geological data of site engineering.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
FIG. 1 is a block diagram of a mine rock mass joint fracture investigation system according to one embodiment of the invention;
FIG. 2 is a flow chart of a mine rock mass joint fracture investigation method according to one embodiment of the invention.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The mine rock mass joint crack investigation system and method according to the embodiment of the invention are described below with reference to the accompanying drawings.
Fig. 1 is a structural block diagram of a mine rock mass joint fracture investigation system according to one embodiment of the invention. As shown in fig. 1, the investigation system 100 for the joint fissure of the mine rock comprises: picture taking device 110, display device 120 and processing device 130.
The picture collecting device 110 is used for collecting a joint fracture picture of a mine rock mass, wherein the rock mass comprises surrounding rocks or ore bodies and the like.
In an embodiment of the present invention, the image capturing device 110 has a high-definition camera and a three-dimensional laser head, so that a high-definition joint crack image can be captured by combining three-dimensional laser scanning and high-definition photography, so that the captured image is clearer, more reliable and better in real-time, which is beneficial to improving the recognition accuracy. More specifically, the image capturing device 110 is, for example, a Maptek XR3 three-dimensional laser scanner.
The display device 120 is connected to the image acquisition device 110, and is configured to display the joint fracture image and display the superior joint fracture characteristics obtained after the user performs manual identification on the joint fracture image.
Specifically, the display device 120 receives the high-definition joint fracture image acquired by the acquisition device and displays the high-definition joint fracture image, which is beneficial for a professional to observe, analyze and identify, obtain a superior joint fracture characteristic and display the superior joint fracture characteristic.
In one embodiment of the invention, the number of the dominant joint fracture features is generally multiple groups, thereby facilitating the accuracy of subsequent automatic identification of the joint fracture. For example, the number of dominant joint fracture features is 2 to 5 groups.
In one embodiment of the present invention, the display device 120 is, for example, a display screen.
The processing device 130 is connected with the display device 120, stores the superior joint fracture characteristics, and automatically identifies other joint fractures of the mine rock mass according to the superior joint fracture characteristics. Specifically, for example, the processing device 130 automatically identifies other joint fractures having the same or similar characteristics as the dominant joint fracture, and completes the automatic identification of the mine joint fracture.
In one embodiment of the invention, the processing means 130 comprises a storage unit and an identification unit.
The storage unit is used for storing the superior joint fracture characteristics; the identification unit is used for automatically identifying other joint cracks with the same or similar characteristics as the dominant joint crack.
In an embodiment, the processing device 130 is, for example, a computer having a storage unit, such as a hard disk; and the preset identification unit automatically identifies other joint cracks with the same or similar characteristics with the superior joint crack through characteristic comparison.
In one embodiment of the invention, the mine rock mass joint crack investigation system further comprises a statistical device.
The statistical device is connected with the processing device 130 and used for performing statistical analysis on all the joint fractures identified by the processing device 130 and outputting the occurrence characteristics and the distribution rules corresponding to the large-range joint fractures of the mine rock mass, so that more comprehensive data can be provided for the quality evaluation of the mine rock mass.
In an embodiment of the present invention, the display device 120 is further configured to display the occurrence characteristics and the distribution rules of the large-scale joint fractures corresponding to the mine rock mass, so as to facilitate the viewing and analysis by professionals.
As a specific example, the image capturing device 110 is a Maptek XR3 three-dimensional laser scanner. The implementation process of the mine rock mass joint crack investigation system 100 can be summarized as follows: the mining area slope step joint crack scanning survey method has the advantages that the Maptek XR3 three-dimensional laser scanner is adopted to scan and investigate the mining area slope step joint crack, the scanner is provided with a high-definition camera and a laser head, high-definition photographing and photographing of rock masses can be achieved, real-time scanning is achieved, and therefore the correspondence between high-definition digital photos and scanning data is achieved. In the investigation process, stations are arranged on four steps, high-definition photographing and scanning are carried out on the seam-crossing cracks of the mine side slope, obtained data are transmitted to a computer, geology professionals recognize 3 groups of superior seam-crossing crack characteristics through high-definition photographs and store the three groups of superior seam-crossing crack characteristics in the computer, the computer automatically recognizes other seam-crossing cracks of the mine side slope, the other seam-crossing cracks of the mine side slope have the same or similar characteristics with the superior seam-crossing crack characteristics, furthermore, the seam-crossing crack occurrence characteristics and the distribution rules of the mine open side slope can be efficiently and accurately obtained through statistical analysis, and more comprehensive data can be provided for quality evaluation of mine rock masses.
In conclusion, the mine rock mass joint crack investigation system adopts a three-dimensional laser scanning and high-definition photography combined mode to accurately and efficiently acquire the distribution situation of large-range joint cracks of a mine aiming at the characteristics that the number of steps of an open mine is large, the rock mass exposed area is large, the underground mine roadway chamber engineering quantity is large, the number is large, the manual joint crack investigation is carried out in the mine, the environment is severe, and the investigation result accuracy is poor. Specifically, the method includes the steps that three-dimensional laser scanning and high-definition photography are combined to obtain joint crack data of mine rock masses, such as underground roadways, chamber rock masses or open slope steps, such as high-definition joint crack pictures, the obtained data are transmitted to a computer, professionals manually identify joint cracks through high-definition pictures, after 2-5 groups of superior joint crack features are manually identified, the computer automatically stores the identified superior joint crack features, joint cracks with the same other features are automatically identified, statistical analysis is conducted, the occurrence features and the distribution rules of the investigated large-range joint cracks of the mine are efficiently counted, and therefore more comprehensive rock mass data are provided for mine quality evaluation.
According to the mine rock mass joint crack investigation system provided by the embodiment of the invention, a high-definition mine rock mass joint crack picture is obtained by adopting a mode of combining three-dimensional laser scanning and high-definition photography, several groups of advantageous joint fracture characteristics are obtained by identifying high-definition joint fracture images of mine rock mass, further, based on the characteristics of the superior joint crack, other joint cracks with the same characteristics are automatically identified, namely, the joint crack of the mine rock mass can be accurately and efficiently and automatically identified, the method is suitable for efficient investigation and accurate identification of the joint crack of the surface mine or the underground mine, statistical analysis is carried out on the identified joint crack, the method can efficiently and accurately obtain the occurrence characteristics and the distribution rules of the large-range joint cracks of the mine, is favorable for providing more comprehensive data for the quality evaluation of mine rock mass, and solves the problem of insufficient geological data of site engineering.
The invention further provides a method for investigating the joint crack of the mine rock mass.
FIG. 2 is a flow chart of a mine rock mass joint fracture investigation method according to one embodiment of the invention. As shown in FIG. 2, the investigation method for the joint fissure of the mine rock comprises the following steps:
step S1: collecting joint fracture pictures of mine rock mass.
In one embodiment of the invention, the picture acquisition device with the high-definition camera and the three-dimensional laser head can be used for acquiring the joint fracture picture of the mine rock mass, so that the high-definition joint fracture picture can be acquired in a mode of combining three-dimensional laser scanning and high-definition photography, the acquired picture is clearer and more reliable, the real-time performance is better, and the identification accuracy is favorably improved. More specifically, the image capturing device is, for example, a Maptek XR3 three-dimensional laser scanner.
Step S2: and identifying the joint crack image to obtain the superior joint crack characteristics.
In a specific embodiment, for example, the joint crack picture is displayed through a display device, and the superior joint crack characteristics obtained after the joint crack picture is manually identified by the user are displayed.
Specifically, the display device receives the high-definition joint crack picture acquired by the acquisition device, displays the high-definition joint crack picture, facilitates observation, analysis and identification of professionals, obtains the superior joint crack characteristic, and displays the superior joint crack characteristic.
In one embodiment of the invention, the number of the dominant joint fracture features is generally multiple groups, thereby facilitating the accuracy of subsequent automatic identification of the joint fracture. For example, the number of dominant joint fracture features is 2 to 5 groups.
In a specific embodiment, the display device is, for example, a display screen.
Step S3: and automatically identifying other joint cracks of the mine rock mass according to the superior joint crack characteristics. Specifically, for example, other joint fractures having the same or similar characteristics as the dominant joint fracture are automatically identified, and the automatic identification of the mine joint fracture is completed.
In particular embodiments, other joint fractures of the mine rock mass are automatically identified from the dominant joint fracture characteristics, for example by a processing device. The processing device may comprise a storage unit and an identification unit. The storage unit is used for storing the superior joint fracture characteristics; the identification unit is used for automatically identifying other joint cracks with the same or similar characteristics as the dominant joint crack.
In a specific embodiment, the processing device is, for example, a computer, and the computer has a storage unit, such as a hard disk; and the preset identification unit automatically identifies other joint cracks with the same or similar characteristics with the superior joint crack through characteristic comparison.
In an embodiment of the invention, the investigation method of the mine rock mass joint crack further comprises the following steps: and performing statistical analysis on all the identified joint fractures, and outputting occurrence characteristics and distribution rules corresponding to the large-range joint fractures of the mine rock mass, thereby being beneficial to providing more comprehensive data for the quality evaluation of the mine rock mass.
In one embodiment of the invention, the method further comprises: the occurrence characteristics and the distribution rules of the large-range joint fractures corresponding to the mine rock mass are displayed through the display device, so that the professional can conveniently check and analyze the occurrence characteristics and the distribution rules.
As a specific example, the implementation process of the method for investigating the jointed crack of the mine rock mass can be summarized as follows: the mining area slope step joint crack scanning survey method has the advantages that the Maptek XR3 three-dimensional laser scanner is adopted to scan and investigate the mining area slope step joint crack, the scanner is provided with a high-definition camera and a laser head, high-definition photographing and photographing of rock masses can be achieved, real-time scanning is achieved, and therefore the correspondence between high-definition digital photos and scanning data is achieved. In the investigation process, stations are arranged on four steps, high-definition photographing and scanning are carried out on the seam-crossing cracks of the mine side slope, obtained data are transmitted to a computer, geology professionals recognize 3 groups of superior seam-crossing crack characteristics through high-definition photographs and store the three groups of superior seam-crossing crack characteristics in the computer, the computer automatically recognizes other seam-crossing cracks of the mine side slope, the other seam-crossing cracks of the mine side slope have the same or similar characteristics with the superior seam-crossing crack characteristics, furthermore, the seam-crossing crack occurrence characteristics and the distribution rules of the mine open side slope can be efficiently and accurately obtained through statistical analysis, and more comprehensive data can be provided for quality evaluation of mine rock masses.
In conclusion, the investigation method for the mine rock mass joint crack adopts a three-dimensional laser scanning and high-definition photography combined mode to accurately and efficiently acquire the distribution condition of the large-range joint crack of the mine aiming at the characteristics that the number of steps of the surface mine is large, the rock mass exposed area is large, the underground mine roadway chamber engineering quantity is large, the number is large, the manual joint crack investigation in the mine is large, the environment is severe, and the investigation result accuracy is poor. Specifically, the method includes the steps that three-dimensional laser scanning and high-definition photography are combined to obtain joint crack data of mine rock masses, such as underground roadways, chamber rock masses or open slope steps, such as high-definition joint crack pictures, the obtained data are transmitted to a computer, professionals manually identify joint cracks through high-definition pictures, after 2-5 groups of superior joint crack features are manually identified, the computer automatically stores the identified superior joint crack features, joint cracks with the same other features are automatically identified, statistical analysis is conducted, the occurrence features and the distribution rules of the investigated large-range joint cracks of the mine are efficiently counted, and therefore more comprehensive rock mass data are provided for mine quality evaluation.
It should be noted that a specific implementation manner of the mine rock mass joint crack investigation method according to the embodiment of the present invention is similar to a specific implementation manner of the mine rock mass joint crack investigation system according to the embodiment of the present invention, and please refer to the description of the system part specifically, and details are not repeated here in order to reduce redundancy.
According to the investigation method of the mine rock mass joint crack of the embodiment of the invention, a high-definition mine rock mass joint crack picture is obtained by adopting a mode of combining three-dimensional laser scanning and high-definition photography, several groups of advantageous joint fracture characteristics are obtained by identifying high-definition joint fracture images of mine rock mass, further, based on the characteristics of the superior joint crack, other joint cracks with the same characteristics are automatically identified, namely, the joint crack of the mine rock mass can be accurately and efficiently and automatically identified, the method is suitable for efficient investigation and accurate identification of the joint crack of the surface mine or the underground mine, statistical analysis is carried out on the identified joint crack, the method can efficiently and accurately obtain the occurrence characteristics and the distribution rules of the large-range joint cracks of the mine, is favorable for providing more comprehensive data for the quality evaluation of mine rock mass, and solves the problem of insufficient geological data of site engineering.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
While embodiments of the invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.
Claims (10)
1. A mine rock mass joint crack investigation system which characterized in that includes:
the picture acquisition device is used for acquiring a joint fracture picture of the mine rock mass;
the display device is connected with the picture acquisition device and is used for displaying the joint crack picture and displaying the superior joint crack characteristics obtained after the user carries out manual identification on the joint crack picture;
and the processing device is connected with the display device, stores the superior joint fracture characteristics and automatically identifies other joint fractures of the mine rock mass according to the superior joint fracture characteristics.
2. The mining rock mass joint crack investigation system of claim 1, characterized in that the picture acquisition device has a high definition camera and a three-dimensional laser head.
3. The mining rock mass joint fissure investigation system of claim 1, the processing device comprising:
the storage unit is used for storing the advantageous joint fracture characteristics;
and the identification unit is used for automatically identifying other joint cracks with the same or similar characteristics as the dominant joint crack.
4. The mining rock mass joint fissure investigation system of any one of claims 1-3, further comprising:
and the statistical device is connected with the processing device and used for performing statistical analysis on all the joint fractures identified by the processing device and outputting the occurrence characteristics and the distribution rules corresponding to the large-range joint fractures of the mine rock mass.
5. The mine rock mass joint fissure investigation system of claim 4, wherein the display device is further configured to display the occurrence characteristics and the distribution rules corresponding to the mine rock mass large-scale joint fissure.
6. The mining rock mass joint fissure investigation system of claim 1, wherein the number of the dominant joint fissure features is 2-5 groups.
7. A method for investigating a mine rock joint crack is characterized by comprising the following steps:
collecting a joint crack picture of a mine rock mass;
identifying the joint crack picture to obtain the superior joint crack characteristic;
and automatically identifying other joint cracks of the mine rock mass according to the superior joint crack characteristics.
8. The mining rock mass joint crack investigation method of claim 7, characterized in that a picture of the joint crack of the mining rock mass is acquired by a picture acquisition device with a high-definition camera and a three-dimensional laser head.
9. The mining rock mass joint fissure investigation method of claim 7, further comprising:
storing the dominant joint fracture signature;
and automatically identifying other joint fractures which are the same as or similar to the superior joint fracture characteristics according to the superior joint fracture characteristics.
10. The mining rock mass joint fissure investigation method of claim 7, further comprising:
and performing statistical analysis on all the identified joint fractures, and outputting occurrence characteristics and distribution rules corresponding to the large-range joint fractures of the mine rock mass.
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