CN114352359A - Method for selecting installation position of mine online ground pressure monitoring equipment - Google Patents
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Abstract
The invention provides a method for selecting the installation position of online ground pressure monitoring equipment of a mine, which comprises the steps of establishing a three-dimensional model for mining according to the parameters of the current situation of mining, carrying out simulation calculation on the model by using three-dimensional simulation analysis software, assigning values to physical and mechanical parameters of mine rocks in each area, carrying out simulation mining according to the parameters of the historical mining process of the mine to obtain the underground stability parameter indexes of each stage of mining, and finally selecting the installation position of the online ground pressure monitoring equipment according to the stability parameter indexes; the selection principle is that the area has good stability, is close to the active area of the ground pressure activity, and can be effectively detected and monitored in real time. The invention solves the problem that the selection of the installation position of the existing online ground pressure monitoring equipment lacks technical support, can effectively monitor the change condition of underground ground pressure activity, achieves the purpose of forecasting and early warning the ground pressure activity, ensures the safety of underground operation personnel and equipment, and realizes the safe production of mines.
Description
Technical Field
The invention relates to the technical field of mine ground pressure monitoring, in particular to a method for selecting an installation position of mine on-line ground pressure monitoring equipment.
Background
Many mines at home and abroad form more goafs due to higher production capacity requirements and later configuration of filling supporting equipment; if the goaf cannot be filled in time after being formed, the underground safety production is greatly influenced, the formed exposed space creates conditions for rock stratum movement, and the shock wave is easily generated to seriously threaten the safety of underground personnel and equipment. In order to achieve the overall goal of safe production of mines, an online ground pressure monitoring system must be installed for underground mines with mining depths exceeding 800 m. The non-coal mine mining occupies a very large proportion in the development and utilization of mines, the development force on mining areas is increased day by day in recent years, the safety problem in the mine development process is prominent, a large area of goaf appears at the bottom of a plurality of mines after long-term development, the safety problem of the goaf directly influences the mine safety, and the goaf and an operation area are basically connected together, so that the ground pressure monitoring on the bottom of the mining area is a necessary development trend.
During mining, the dynamic phenomenon of sudden and violent destruction caused by the instantaneous release of the elastic deformation properties of the mine rock mass is called "ground pressure". The occurrence of ground pressure often causes disastrous personal casualties and huge economic losses, and becomes one of the main factors causing major disasters of mines. The mine is provided with online ground pressure monitoring equipment, which is a precaution measure taken before the goaf is effectively treated and potential safety hazards are eliminated to achieve intrinsic safety, and underground potential ground pressure disasters are forecasted and early warned, so that personnel and equipment can be withdrawn in advance, and underground safety accidents caused by the ground pressure disasters are prevented. Nowadays, mine managers have stronger and stronger safety risk awareness, and more mines are provided with online ground pressure monitoring equipment; however, the selection of the installation position of the underground online ground pressure monitoring equipment is always a difficult problem, most mines determine the installation area and the specific installation place according to subjective ideas, certain technical support is lacked, and the selection of the installation position is related to the monitoring effect of the online ground pressure monitoring equipment, so that the safety operation of mines is influenced.
In view of the above, there is a need to design an improved method for selecting an installation location of an online mine ground pressure monitoring device to solve the above problems.
Disclosure of Invention
The invention aims to provide a method for selecting the installation position of on-line ground pressure monitoring equipment of a mine, which is characterized in that a three-dimensional model for mining is established by combining parameters of the current situation of mining to be monitored by ground pressure, and simulation calculation is carried out by utilizing the parameters of the historical mining process of the mine to obtain the underground stability parameter index of each stage of mining; and finally, selecting the installation position of the online ground pressure monitoring equipment according to the stability parameter index. The method solves the problem that the selection of the installation position of the existing underground online ground pressure monitoring equipment lacks technical support, can effectively monitor the change condition of underground ground pressure activity, achieves the aim of forecasting and early warning of ground pressure activity, and ensures the safety of underground operators and equipment.
In order to achieve the aim, the invention provides a method for selecting the installation position of mine online ground pressure monitoring equipment, which comprises the following steps of:
s1, collecting parameters of the historical mining process of the mine to be subjected to ground pressure monitoring and parameters of the current mining situation of the mine;
s2, establishing a three-dimensional model of mine exploitation by adopting three-dimensional modeling software according to the parameters of the current mine exploitation situation collected in the step S1;
s3, exporting the three-dimensional mine mining model obtained in the step S2, inputting the three-dimensional mine mining model into three-dimensional simulation analysis software for simulation calculation, assigning physical mechanical parameters of mine rocks in each area in a command stream mode for the simulation calculation, and performing simulation mining according to the parameters of the mine historical mining process in the step S1 to obtain underground stability parameter indexes of each stage of mine mining;
s4, analyzing and predicting a ground pressure instability area according to the underground stability parameter indexes of the mining stages obtained in the step S3, and selecting the installation position of online ground pressure monitoring equipment; the online ground pressure monitoring equipment is arranged in a stable area, and meanwhile, the distance from the edge of the unstable area of ground pressure is 4-8 m.
As a further improvement of the present invention, in step S2, the parameters of the current mining situation of the mine include an actual geological mid-section plan view, an exploratory line section view, a surface topography view, longitudinal projection views of each mine vein, and a bench book for the production of the stope.
As a further improvement of the present invention, in step S2, the building of the three-dimensional mine mining model specifically includes the following steps:
s21, constructing an ore body and a roadway model according to the actually measured geological middle section plan and the exploratory line profile;
s22, constructing and molding the ground surface of the ore body according to the ground surface topographic map, and combining the ground surface with the ore body and the roadway model constructed in the step S21 to obtain an integral three-dimensional model of the mine;
s23, cutting the stopes in the veins according to the longitudinal projection drawings of the veins and the recording condition of the production ledger of the stopes, so as to facilitate the subsequent simulation of the production process of the stopes;
and S24, carrying out grouping naming on surrounding rocks of upper and lower walls, ore veins, roadways and stopes in the model, and facilitating the editing of a subsequent numerical simulation command stream to obtain the three-dimensional model for mining.
As a further improvement of the present invention, in step S1, the parameters of the historical mining process of the mine to be monitored for the ground pressure include the number of vein produced underground, the development project distribution, the stope mining sequence and the stope size.
As a further improvement of the present invention, in step S3, the stability parameter indexes include parameter indexes of stress concentration phenomenon, displacement and plastic failure zone distribution.
As a further improvement of the present invention, in step S3, the physical and mechanical parameters include uniaxial compressive strength, poisson' S ratio, shear modulus, bulk modulus, tensile strength, cohesion, internal friction angle, and density of the ore body and surrounding rock.
As a further improvement of the present invention, in step S2, the three-dimensional modeling software is MIDAS GTS NX software.
As a further improvement of the present invention, in step S3, the three-dimensional simulation analysis software is FLAC 3D 5.0 software.
As a further improvement of the present invention, in step S3, a data file derived from the three-dimensional mining model is converted into a format by using a Midas GTS NX To FLAC 3D 5.0 program, and then is input into the three-dimensional simulation analysis software.
As a further improvement of the invention, the indexes of the physical and mechanical parameters are obtained by processing and testing after mine field sampling.
The invention has the beneficial effects that:
1. the invention discloses a method for selecting the installation position of on-line ground pressure monitoring equipment of a mine, which comprises the steps of collecting parameters of a historical mining process of the mine to be subjected to ground pressure monitoring and parameters of the current mining situation, and establishing a three-dimensional mine mining model according to the parameters of the current mining situation; carrying out simulation calculation in three-dimensional simulation analysis software, wherein the simulation calculation adopts a command stream form, carrying out assignment on physical and mechanical parameters of the ore rock in each area, and carrying out simulation mining according to parameters of the historical mining process of the mine to obtain underground stability parameter indexes of each stage of mining; and finally, selecting the installation position of the online ground pressure monitoring equipment according to the underground stability parameter indexes of all stages of mining, wherein the selection principle is an area with good area stability and 4-8 m distance from the area with poor stability parameter indexes. The method solves the problem that the selection of the installation position of the existing underground online ground pressure monitoring equipment lacks technical support, can effectively monitor the change condition of underground ground pressure activity, achieves the aim of forecasting and early warning of ground pressure activity, and ensures the safety of underground operators and equipment.
2. The method analyzes and judges the underground place most prone to ground pressure disaster accidents through the stability parameter indexes obtained by simulation, generally carries out online ground pressure monitoring preferentially in the areas with obvious stress concentration phenomenon, large displacement variation and large plastic damage area, and carries out equipment installation in the area with installation conditions by combining the detection distance of online ground pressure monitoring equipment; the installation condition is good, namely the overall stability condition of the installation area is good, ground pressure disaster accident conditions can not occur in a short time, meanwhile, the area with active ground pressure activities is close, and the area which needs real-time monitoring and is embodied in numerical simulation analysis can be effectively detected. The method for selecting the installation position of the on-line ground pressure monitoring equipment is more reasonable, and the change condition of the ground pressure activity can be more effectively monitored; effective measures can be taken for the mine goaf according to the monitoring condition of the equipment for treatment, the accident potential of ground pressure disasters is eliminated, and safe production of mines is realized.
3. According to the method for selecting the installation position of the on-line ground pressure monitoring equipment, a technical method combining actual production and simulation is adopted, a large amount of manpower and material resources are saved, the defect that the installation area and the specific installation place of the installation position of the on-line ground pressure monitoring equipment in most underground mines are determined by subjective ideas is overcome, the rationality of installation of the on-line ground pressure monitoring equipment is improved, the waste of resources is reduced, and the stability and the monitoring use effect of the installed on-line ground pressure monitoring equipment are ensured.
Drawings
Fig. 1 is a schematic flow chart of a method for selecting an installation position of mine online ground pressure monitoring equipment.
Fig. 2 is an overall three-dimensional mesh model of a certain mine in embodiment 1 of the present invention.
Fig. 3 is a numerical simulation mining sequence diagram according to embodiment 1 of the present invention.
Fig. 4 is a maximum principal stress distribution diagram of a stope after simulated stope excavation in example 1 of the present invention.
Fig. 5 is a minimum principal stress distribution diagram of a stope after simulated stope excavation in example 1 of the present invention.
Fig. 6 is a plastic area distribution diagram of a stope after the excavation of a simulated stope in embodiment 1 of the present invention.
Fig. 7 is a Z-direction displacement distribution diagram after simulated stope excavation in embodiment 1 of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in detail with reference to the accompanying drawings and specific embodiments.
It should be noted that, in order to avoid obscuring the present invention with unnecessary details, only the structures and/or processing steps closely related to the aspects of the present invention are shown in the drawings, and other details not closely related to the present invention are omitted.
Further, it is also noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Referring to fig. 1, a method for selecting an installation position of an online mine ground pressure monitoring device includes the following steps:
s1, collecting parameters of the historical mining process of the mine to be subjected to ground pressure monitoring and parameters of the current mining situation of the mine; the parameters of the historical mining process of the mine comprise the number of underground produced ore veins, the distribution condition of development projects, the mining sequence of a stope and the size of the stope; the parameters of the current mining situation of the mine comprise an actually measured geological middle section plane figure (comprising underground middle section roadway projects and ore body boundaries), an exploration line profile figure, an earth surface topographic map, a longitudinal projection figure (comprising stope distribution) of each ore vein and a stope production ledger (comprising the structure and the size of the stope);
s2, establishing a three-dimensional mine mining model by adopting MIDAS GTS NX software according to the parameters of the current mine mining situation collected in the step S1, and specifically comprising the following steps:
s21, constructing an ore body and a roadway model according to the actually measured geological middle section plan and the exploratory line profile;
s22, constructing and molding the ground surface of the ore body according to the ground surface topographic map, and combining the ground surface with the ore body and roadway model constructed in the step S21 to obtain an integral three-dimensional model of the mine;
s23, cutting the stope in the vein according to the longitudinal projection drawing of each vein and the recording condition of the production ledger of the stope, so as to facilitate the subsequent simulation of the production process of the stope;
s24, carrying out grouping naming on surrounding rocks, ore veins, roadways and stopes of an upper plate and a lower plate in the model, and facilitating editing of a subsequent numerical simulation command stream to obtain a three-dimensional model for mining;
s3, exporting the three-dimensional mine mining model obtained in the step S2, converting the format of a data file exported from the three-dimensional mine mining model by using a Midas GTS NX To FLAC 3D 5.0 program, inputting the converted data file into three-dimensional simulation analysis software FLAC 3D 5.0 for simulation calculation, assigning physical and mechanical parameters of mine rocks in each region by using a command stream form for the simulation calculation, and simulating mining according To the parameters of the historical mine mining process in the step S1; obtaining underground stability parameter indexes of each stage of mining;
wherein the stability parameter indexes comprise stress concentration phenomenon, displacement and parameter indexes of plastic failure area distribution; the physical and mechanical parameters comprise uniaxial compressive strength, Poisson's ratio, shear modulus, volume modulus, tensile strength, cohesive force, internal friction angle and density of ore bodies and surrounding rocks; the indexes of the physical and mechanical parameters are obtained by processing and testing after mine field sampling;
s4, analyzing and predicting a ground pressure instability area according to the underground stability parameter indexes of the mining stages obtained in the step S3, and selecting the installation position of online ground pressure monitoring equipment; the online ground pressure monitoring equipment is arranged in a stable area, meanwhile, the distance from the edge of the unstable area of ground pressure is 4-8 m, and the distance between the online ground pressure monitoring equipment is 35-50 m; the online ground pressure monitoring equipment is uniformly distributed around an unstable area as a center so as to realize an all-around and more effective detection effect.
Specifically, the unstable earth pressure area is an area with obvious stress concentration phenomenon, large displacement change and large plastic damage area compared with the surrounding area, or an area with phenomena of goaf roof collapse, side wall crossing, tunnel roof caving or bottom bulging and the like on site; the selection that possesses the mounted position is that this mounting region overall stability condition is better, can not appear ground pressure disaster accident situation in the short time, and is close from the region that ground pressure activity is active simultaneously, can effectively detect the region that needs real-time supervision who embodies in the numerical simulation analysis.
Particularly, according to the method for selecting the installation position of the on-line ground pressure monitoring equipment for the mine, a three-dimensional model for mining is established by combining the parameters of the current mining situation of the area to be installed, and simulation calculation is performed by using the parameters of the historical mining process of the mine, so that the underground stability parameter index of each stage of mining is obtained; and finally, selecting the installation position of the online ground pressure monitoring equipment according to the stability parameter index. The method solves the problem that the selection of the installation position of the existing underground online ground pressure monitoring equipment lacks technical support, can effectively monitor the change condition of underground ground pressure activity, achieves the aim of forecasting and early warning of ground pressure activity, and ensures the safety of underground operating personnel and equipment.
Example 1
The embodiment provides a method for selecting an installation position of mine online ground pressure monitoring equipment, wherein the size of a certain mine is length (4283m) multiplied by width (3898m) multiplied by height (1473m), and the method for selecting the installation position of the mine online ground pressure monitoring equipment specifically comprises the following steps:
s1, collecting parameters of the mine in the historical mining process (the number of underground produced ore veins, the development project distribution condition, the mining sequence of a stope and the size of the stope) and parameters of the mine mining status (an actually measured geological middle section plan, an exploration line section diagram, a surface topography, longitudinal projection diagrams of all the ore veins and a stope production ledger);
s2, establishing a three-dimensional mine mining model by adopting MIDAS GTS NX software according to the parameters of the current mine mining situation collected in the step S1, and specifically comprising the following steps:
s21, constructing an ore body and a roadway model according to the actually measured geological middle section plan and the exploratory line profile;
s22, constructing and molding the ground surface of the ore body according to the ground surface topographic map, and combining the ground surface with the ore body and roadway model constructed in the step S21 to obtain an integral three-dimensional model of the mine;
s23, cutting the stope in the vein according to the longitudinal projection drawing of each vein and the recording condition of the production ledger of the stope, so as to facilitate the subsequent simulation of the production process of the stope;
s24, carrying out grouping naming on surrounding rocks of upper and lower walls, ore veins, roadways and stopes in the model, facilitating the editing of a subsequent numerical simulation command stream, and obtaining a three-dimensional model for mining, as shown in FIG. 2;
and S3, exporting the three-dimensional mine mining model obtained in the step S2, converting the format of a data file exported from the three-dimensional mine mining model by adopting a Midas GTS NX To FLAC 3D 5.0 program, inputting the converted data file into three-dimensional simulation analysis software FLAC 3D 5.0 for simulation calculation, assigning values To the physical and mechanical parameters (uniaxial compressive strength, Poisson ratio, shear modulus, volume modulus, tensile strength, cohesive force, internal friction angle and density of an ore body and surrounding rocks) of the ore rocks in each area, and simulating mining according To the parameters of the historical mine mining process in the step S1. As shown in fig. 3, the mining sequence is that firstly, the 1 st subsection of ore bodies on the east and west sides is excavated; excavating the 2 nd subsection on the east and west sides; excavating the 3 rd section (excavating history section) on the west side; fourthly, excavating a roadway; excavating the 3 rd subsection on the east side and the 4 th subsection on the west side; sixthly, excavating the 4 th subsection at the east side and the 5 th subsection at the west side; seventhly, excavating a 5 th section at the east side and a 6 th section at the west side; eighthly, excavating the 6 th segment on the east side and the 7 th segment on the west side; ninthly, excavating the 7 th subsection on the east side (fully excavating). Analyzing various parameters to obtain underground stability parameter indexes (parameter indexes distributed by stress concentration phenomenon, displacement and plastic failure areas) of each stage of mining;
s4, analyzing and predicting a ground pressure instability area according to the underground stability parameter indexes of the mining stages obtained in the step S3, and selecting the installation position of online ground pressure monitoring equipment; the selection principle of the installation position of the online ground pressure monitoring equipment is that the area stability is good, and the distance from the area with poor stability parameter indexes is 4-8 m.
Referring to fig. 4-7, fig. 4 is a maximum principal stress distribution diagram of a stope after a simulated stope is excavated in example 1 of the present invention, fig. 5 is a minimum principal stress distribution diagram of a stope after a simulated stope is excavated in example 1 of the present invention, fig. 6 is a plastic region distribution diagram of a stope after a simulated stope is excavated in example 1 of the present invention, and fig. 7 is a stope with a Z-direction (vertical direction) displacement distribution diagram after a simulated stope is excavated in example 1 of the present invention. As can be seen from fig. 4-7, after all the stopes are excavated in sections, the displacement is mainly generated on the first section roof, the maximum sinking displacement is 5.46mm, and the influence on the stopes is small; the plastic zones are small in number, scattered, free of large-area through and small in influence on a stope. Along with continuous downward excavation, the stress of the rock mass at the upper part of the goaf is gradually released and dispersed, and the tensile stress borne by the goaf top plates of the 1 st section and the 2 nd section is gradually reduced and is far less than the tensile strength of the rock mass; the top plates of other sublevel stopes are influenced by gravity to generate compressive stress, but the compressive stress values are all less than the compressive strength of rock mass. Therefore, the ground pressure on-line monitoring equipment can be installed at the top position of the first sublevel stope according to the calculation result of the case model.
In conclusion, the invention provides a method for selecting the installation position of the on-line ground pressure monitoring equipment of the mine, which is used for collecting the parameters of the historical mining process of the mine to be monitored by ground pressure and the parameters of the current mining situation and establishing a three-dimensional model of mining according to the parameters of the current mining situation; carrying out simulation calculation in three-dimensional simulation analysis software, wherein the simulation calculation adopts a command stream form, carrying out assignment on physical and mechanical parameters of the ore rock in each area, and carrying out simulation mining according to parameters of the historical mining process of the mine to obtain underground stability parameter indexes of each stage of mining; and finally, analyzing and predicting the unstable area of the ground pressure according to the underground stability parameter indexes of all stages of mining, and selecting the installation position of the online ground pressure monitoring equipment, wherein the selection principle is an area with good area stability and 4-8 m distance from the edge of the unstable area of the ground pressure. The method judges the location where the underground ground pressure disaster accident is most likely to happen through the stability parameter index obtained by simulation, and generally carries out equipment installation in the area with installation conditions by combining the detection distance of a single ground pressure monitoring sensor in the area with obvious stress concentration phenomenon, large displacement variation and large plastic damage area; the installation condition is good, namely the overall stability condition of the installation area is good, ground pressure disaster accident conditions can not occur in a short time, meanwhile, the area with active ground pressure activities is close, and the area which needs real-time monitoring and is embodied in numerical simulation analysis can be effectively detected. The method for selecting the installation position of the on-line ground pressure monitoring equipment is more reasonable, and the change condition of ground pressure activity can be monitored more effectively; effective measures can be taken for treating the mine goaf according to the monitoring condition of the equipment, the accident potential of the ground pressure disaster is eliminated, and the safe production of the mine is realized. The method solves the problem that the selection of the installation position of the existing underground online ground pressure monitoring equipment lacks technical support, can effectively monitor the change condition of underground ground pressure activity, achieves the aim of forecasting and early warning of ground pressure activity, and ensures the safety of underground operation personnel and equipment.
Although the present invention has been described in detail with reference to the preferred embodiments, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted without departing from the spirit and scope of the invention.
Claims (10)
1. A method for selecting an installation position of mine online ground pressure monitoring equipment is characterized by comprising the following steps:
s1, collecting parameters of the historical mining process of the mine to be subjected to ground pressure monitoring and parameters of the current mining situation of the mine;
s2, establishing a three-dimensional model of mine exploitation by adopting three-dimensional modeling software according to the parameters of the current mine exploitation situation collected in the step S1;
s3, exporting the three-dimensional mine mining model obtained in the step S2, inputting the three-dimensional mine mining model into three-dimensional simulation analysis software for simulation calculation, assigning physical and mechanical parameters of mine rocks in each area in a command stream mode, and performing simulation mining according to the parameters of the historical mining process of the mine in the step S1 to obtain underground stability parameter indexes of each stage of mine mining;
s4, analyzing and predicting a ground pressure instability area according to the underground stability parameter indexes of the mining stages obtained in the step S3, and selecting the installation position of online ground pressure monitoring equipment; the online ground pressure monitoring equipment is arranged in a stable area, and meanwhile, the distance from the online ground pressure monitoring equipment to the edge of the unstable area of ground pressure is 4-8 m.
2. The method for selecting an installation location of an on-line ground pressure monitoring equipment for a mine according to claim 1, wherein the parameters of the mine current exploitation situation in step S2 include an actually measured geological mid-section plan, an exploration line profile, a surface topography, longitudinal projections of each mine vein and a production ledger of the stope.
3. The method for selecting the installation position of the on-line mine ground pressure monitoring equipment as claimed in claim 2, wherein in the step S2, the establishment of the three-dimensional mine mining model specifically comprises the following steps:
s21, constructing an ore body and a roadway model according to the actually measured geological middle section plan and the exploratory line profile;
s22, constructing and molding the ground surface of the ore body according to the ground surface topographic map, and combining the ground surface with the ore body and the roadway model constructed in the step S21 to obtain an integral three-dimensional model of the mine;
s23, cutting the stopes in the veins according to the longitudinal projection drawings of the veins and the recording condition of the production ledger of the stopes, so as to facilitate the subsequent simulation of the production process of the stopes;
and S24, carrying out grouping naming on surrounding rocks of upper and lower walls, ore veins, roadways and stopes in the model, and facilitating the editing of a subsequent numerical simulation command stream to obtain the three-dimensional model for mining.
4. The method for selecting the installation position of the mine on-line earth pressure monitoring equipment as claimed in claim 1, wherein in the step S1, the parameters of the historical mining process of the mine to be subjected to earth pressure monitoring comprise the number of underground produced ore vein, development project distribution, mining sequence of stope and stope size.
5. The method for selecting the installation location of the mine online ground pressure monitoring equipment according to claim 1, wherein in step S3, the stability parameter indexes comprise parameter indexes of stress concentration, displacement and plastic failure zone distribution.
6. The method for selecting the installation position of the mine online ground pressure monitoring equipment according to the claim 1, wherein in the step S3, the physical and mechanical parameters comprise uniaxial compression strength, Poisson' S ratio, shear modulus, bulk modulus, tensile strength, cohesion, internal friction angle and density of the ore body and the surrounding rock.
7. The method for selecting the installation location of the mine online ground pressure monitoring device according to claim 1, wherein in step S2, the three-dimensional modeling software is MIDAS GTS NX software.
8. The method for selecting the installation position of the mine online ground pressure monitoring equipment as claimed in claim 7, wherein in step S3, the three-dimensional simulation analysis software is FLAC 3D 5.0 software.
9. The method for selecting the installation location of the mine online ground pressure monitoring equipment as recited in claim 8, wherein in step S3, a data file derived from the three-dimensional model of mining is converted into a format by using a Midas GTS NX To FLAC 3D 5.0 program, and then is input into the three-dimensional simulation analysis software.
10. The method for selecting the installation position of the mine on-line ground pressure monitoring equipment as claimed in claim 6, wherein the indexes of the physical and mechanical parameters are obtained by processing and testing after mine field sampling.
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