CN110826254A - Strip mine slope rock mass joint distribution parameter determination method, storage medium and system - Google Patents
Strip mine slope rock mass joint distribution parameter determination method, storage medium and system Download PDFInfo
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Abstract
The invention provides a method, a storage medium and a system for measuring joint distribution parameters of strip mine slope rock mass, wherein the method comprises the steps of obtaining the joint distribution parameters of the surface of the strip mine slope rock mass; obtaining the internal joint distribution parameters of strip mine slope rock mass; and calculating the surface-interior joint distribution parameters of the strip mine slope rock mass according to the surface joint distribution parameters of the strip mine slope rock mass and the internal joint distribution parameters of the strip mine slope rock mass. The invention solves the technical problem that errors exist in the prior art by simply measuring the parameters of the joints and cracks on the surface of the slope rock mass to represent the real three-dimensional distribution of the rock mass joints, thereby improving the accuracy of the measurement result and reducing the cost.
Description
Technical Field
The invention relates to the field of coal mines, in particular to a strip mine slope rock mass joint distribution parameter determination method, a storage medium and a system.
Background
The main influencing factor influencing the stability of the strip mine slope is the distribution state of joint cracks (joint parameters), which are formed by secondary cracks generated by mining operation and primary cracks in a rock body. At present, the joint on the surface of a slope rock mass is mainly measured by a certain technical means for measuring the joint parameters of the strip mine slope, and the distribution of the joint on the surface of the slope rock mass can represent the distribution condition of the joint in the whole rock mass. However, the joint cracks are distributed in a three-dimensional state in the inner space of the slope rock mass, the exposed part on the surface of the rock mass cannot represent the distribution condition of the joint in the whole rock mass, and in practice, the cracks in the inner part of the rock mass are not exposed on the surface of the slope rock mass, so that the real three-dimensional distribution of the rock mass joint is represented by simply measuring the joint crack parameters on the surface of the slope rock mass, and errors exist.
Disclosure of Invention
Based on the problems, the invention provides a method, a storage medium and a system for determining the joint distribution parameters of the slope rock mass of the strip mine, which solve the technical problem that errors exist in the prior art by simply measuring the joint fissure parameters of the surface of the slope rock mass to represent the real three-dimensional distribution of the joint of the rock mass, improve the accuracy of the measuring result and reduce the cost.
The invention provides a method for measuring joint distribution parameters of strip mine slope rock mass, which comprises the following steps:
obtaining surface joint distribution parameters of strip mine slope rock mass;
obtaining the internal joint distribution parameters of strip mine slope rock mass;
and calculating the surface-interior joint distribution parameters of the strip mine slope rock mass according to the surface joint distribution parameters of the strip mine slope rock mass and the internal joint distribution parameters of the strip mine slope rock mass.
In addition, the acquisition of surface joint distribution parameters of the strip mine slope rock mass comprises the following steps:
and (3) carrying out three-dimensional geometric image synthesis processing on the image of the strip mine slope rock mass, reconstructing a three-dimensional model of the strip mine slope rock mass, and reading joint distribution parameters of the surface of the strip mine slope rock mass according to the three-dimensional model.
In addition, the surface joint distribution parameters of the strip mine slope rock mass comprise the joint trace length, the joint line density and the joint interval of each joint of the surface of the strip mine slope rock mass.
In addition, obtaining the inside joint distribution parameters of the strip mine slope rock mass comprises the following steps:
designing drilling parameters according to the joint trace length, the joint line density and the joint spacing of each joint on the surface of the strip mine slope rock mass, wherein the drilling parameters comprise a drilling mode, a drilling diameter and a drilling spacing;
and (3) performing horizontal hole and vertical hole construction on the strip mine side slope rock mass, and observing the joint distribution of the vertical holes and the horizontal holes in the rock mass by adopting an intelligent drilling television imager to obtain the internal joint distribution parameters of the strip mine side slope rock mass.
In addition, the drilling hole spacing is data between 2 times and 3 times of the joint spacing of each joint on the surface of the strip mine slope rock body.
In addition, the drilling diameter of the horizontal hole and the vertical hole is larger than the diameter of the lens of the intelligent drilling television imager.
In addition, according to a mixed distribution theory, the surface joint distribution parameters of the strip mine slope rock mass and the internal joint distribution parameters of the strip mine slope rock mass are fused to obtain the surface-inside distribution parameters of the joint of the strip mine slope rock mass.
In addition, the surface-inside distribution parameter of the joint of the strip mine slope rock mass is a surface-inside fracture distribution function of the strip mine slope.
The invention provides a storage medium, which stores computer instructions for executing any one of the methods for determining strip mine slope rock mass joint distribution parameters when a computer executes the computer instructions.
The invention provides a strip mine slope rock mass joint distribution parameter measuring system, which comprises at least one processor; and a memory communicatively coupled to the at least one processor; wherein the memory stores instructions executable by the one processor to cause the at least one processor to:
obtaining surface joint distribution parameters of strip mine slope rock mass;
obtaining the internal joint distribution parameters of strip mine slope rock mass;
and calculating the surface-interior joint distribution parameters of the strip mine slope rock mass according to the surface joint distribution parameters of the strip mine slope rock mass and the internal joint distribution parameters of the strip mine slope rock mass.
Through adopting above-mentioned technical scheme, have following beneficial effect:
the invention solves the technical problem that errors exist in the prior art by simply measuring the parameters of the joints and cracks on the surface of the slope rock mass to represent the real three-dimensional distribution of the rock mass joints, thereby improving the accuracy of the measurement result and reducing the cost.
Drawings
FIG. 1 is a flow chart of a method for determining joint distribution parameters of a slope rock mass of an open-pit mine according to an embodiment of the invention;
FIG. 2 is a schematic diagram of a three-dimensional model in a method for determining joint distribution parameters of a slope rock mass of an open-pit mine according to an embodiment of the invention;
fig. 3 is a schematic diagram of horizontal holes and vertical holes in the method for determining the joint distribution parameters of the strip mine slope rock mass according to one embodiment of the invention.
Detailed Description
The present invention is described in further detail below with reference to specific embodiments and the attached drawings. It is intended that the present invention not be limited to the particular embodiments disclosed, but that the present invention be limited only by the appended claims.
Referring to fig. 1, the invention provides a method for measuring joint distribution parameters of strip mine slope rock mass, which comprises the following steps:
s001, obtaining surface joint distribution parameters of strip mine slope rock mass;
s002, obtaining internal joint distribution parameters of strip mine slope rock mass;
and S003, calculating the surface-interior joint distribution parameters of the strip mine slope rock mass according to the surface joint distribution parameters of the strip mine slope rock mass and the interior joint distribution parameters of the strip mine slope rock mass.
In step S001, optionally, the image of the strip mine slope rock mass is subjected to three-dimensional geometric image synthesis processing, a three-dimensional model of the strip mine slope rock mass is reconstructed, and the surface joint distribution parameters of the strip mine slope rock mass are read according to the three-dimensional model.
For example, a given strip mine slope rock mass region is imaged from two different angles using a camera and three-dimensional geometric image synthesis is performed by pixel matching techniques.
Referring to fig. 2, optionally, images at different angles are processed through a software system of sharemetr iX3D, including reference calibration, pixel point matching and image deformation deviation correction, so that reconstruction of a true three-dimensional model of the strip mine slope rock mass is realized.
In the step S002, optionally, drilling parameters are designed according to the joint trace length, the joint line density and the joint interval of each joint on the surface of the strip mine slope rock body, wherein the drilling parameters include a drilling mode, a drilling diameter and a drilling interval;
referring to fig. 3, horizontal hole and vertical hole construction is carried out on the strip mine side slope rock body, joint distribution of the vertical holes and the horizontal holes in the rock body is observed by adopting an intelligent drilling television imager, and joint distribution parameters in the strip mine side slope rock body are obtained. a is the inner joint of the strip mine side slope rock mass, b is a vertical drilling hole, c is a horizontal drilling hole, and d is the surface joint of the strip mine side slope rock mass. Optionally, a JL-IDOI (A) intelligent drilling television imager is adopted to observe the rock mass joints in the horizontal hole and the vertical hole to form a digital drilling core, and joint distribution parameters including joint trace length, joint line density and joint spacing of each joint in the strip mine slope rock mass are obtained.
In the step S003, the surface-interior joint distribution parameters of the strip mine slope rock mass are calculated according to the surface joint distribution parameters of the strip mine slope rock mass and the interior joint distribution parameters of the strip mine slope rock mass.
And carrying out information fusion on the surface joint distribution parameters of the strip mine slope rock mass and the internal joint distribution parameters of the strip mine slope rock mass to obtain the surface-interior joint distribution parameters of the strip mine slope rock mass.
In the prior art, the cost is greatly increased by measuring all the measured slope rock mass joint parameters in a punching mode, in order to conveniently and accurately measure the strip mine slope joint parameters accurately and simply, the method for measuring the actual strip mine slope joint parameters by obtaining the strip mine slope rock mass surface joint distribution parameters and obtaining the strip mine slope rock mass internal joint distribution parameters and calculating the strip mine slope rock mass surface-interior joint distribution parameters according to the strip mine slope rock mass surface joint distribution parameters and the strip mine slope rock mass internal joint distribution parameters to obtain the actual strip mine slope joint parameters solves the technical problems that in the prior art, the actual three-dimensional distribution of rock mass joints is represented by simply measuring the slope rock mass surface joint crack parameters, errors exist, the accuracy of the measured results is improved, and the cost is reduced.
In one embodiment, obtaining surface joint distribution parameters of strip mine slope rock mass comprises:
and (3) carrying out three-dimensional geometric image synthesis processing on the image of the strip mine slope rock mass, reconstructing a three-dimensional model of the strip mine slope rock mass, and reading joint distribution parameters of the surface of the strip mine slope rock mass according to the three-dimensional model.
And imaging the designated strip mine slope rock mass region from two different angles by using a camera and synthesizing a three-dimensional geometric image by using a pixel matching technology.
Referring to fig. 2, optionally, images at different angles are processed through a software system of sharemetr iX3D, including reference calibration, pixel point matching and image deformation deviation correction, so that reconstruction of a true three-dimensional model of the strip mine slope rock mass is realized. By establishing the three-dimensional model, workers can read the surface joint distribution parameters of the strip mine slope rock mass according to the three-dimensional model.
In one embodiment, the surface joint distribution parameters of the strip mine slope rock mass comprise joint trace length, joint line density and joint spacing of each joint of the surface of the strip mine slope rock mass.
In one embodiment, obtaining the inside joint distribution parameters of the strip mine slope rock mass comprises:
designing drilling parameters according to the joint trace length, the joint line density and the joint spacing of each joint on the surface of the strip mine slope rock mass, wherein the drilling parameters comprise a drilling mode, a drilling diameter and a drilling spacing;
and (3) performing horizontal hole and vertical hole construction on the strip mine side slope rock mass, and observing the joint distribution of the vertical holes and the horizontal holes in the rock mass by adopting an intelligent drilling television imager to obtain the internal joint distribution parameters of the strip mine side slope rock mass.
Referring to fig. 3, horizontal hole and vertical hole construction is carried out on the strip mine side slope rock body, joint distribution of the vertical holes and the horizontal holes in the rock body is observed by adopting an intelligent drilling television imager, and joint distribution parameters in the strip mine side slope rock body are obtained. a is the inner joint of the strip mine side slope rock mass, b is a vertical drilling hole, c is a horizontal drilling hole, and d is the surface joint of the strip mine side slope rock mass. Optionally, a JL-IDOI (A) intelligent drilling television imager is adopted to observe the rock mass joints in the horizontal hole and the vertical hole to form a digital drilling core, and joint distribution parameters including joint trace length, joint line density and joint spacing of each joint in the strip mine slope rock mass are obtained. The joint distribution of the vertical holes and the horizontal holes in the rock body is observed by adopting an intelligent drilling television imager, so that the joint distribution parameters in the strip mine slope rock body are obtained.
In one embodiment, the borehole spacing is between 2 and 3 times the joint spacing of each joint on the surface of the strip mine slope rock mass. In order to be able to see the joint distribution in the drill holes, the drill hole spacing is made to be between 2 and 3 times of the joint spacing of each joint on the surface of the strip mine slope rock body.
In one embodiment, the drilling diameter of the horizontal hole and the vertical hole is larger than the diameter of the lens of the intelligent drilling television imager. In order to enable the intelligent borehole television imager to be placed in a borehole to observe the joint distribution of vertical holes and horizontal holes in a rock body, the borehole diameters of the horizontal holes and the vertical holes need to be larger than the lens diameter of the intelligent borehole television imager. For example: the diameter of the lens of the intelligent drilling television imager is 50mm, and the diameter of a drill hole is 75 mm.
In one embodiment, according to the mixed distribution theory, the surface joint distribution parameters of the strip mine slope rock mass and the internal joint distribution parameters of the strip mine slope rock mass are fused to obtain the surface-inside joint distribution parameters of the strip mine slope rock mass.
In one embodiment, the surface-to-surface distribution parameter of the surface mine slope rock mass joint is a surface-to-surface joint distribution function of the surface mine slope.
And carrying out fuzzy C-means clustering analysis on the surface joint distribution parameters of the strip mine slope rock mass, and fitting a strip mine slope rock mass surface joint distribution probability density function according to the fuzzy C-means clustering analysis result. The probability density function of surface joint distribution of the strip mine slope rock mass is as follows:
and carrying out fuzzy C-means clustering analysis on the joint distribution parameters inside the strip mine slope rock mass, and fitting a probability density function of the joint distribution inside the strip mine slope rock mass according to the fuzzy C-means clustering analysis result. The probability density function of the internal joint distribution of the strip mine slope rock mass is as follows:
according to the theory of mixed distributions, for a given set of probability density functions, f1(x), …, fn (x), and weights ω 1, …, ω n, where ω i ≦ 0 and the sum is 1, the density function can be obtained:
therefore, the surface joint distribution probability density function of the strip mine slope rock mass and the internal joint distribution probability density function of the strip mine slope rock mass are fused, and the surface-internal joint distribution function of the strip mine slope is obtained as follows:
wherein S1 is the three-dimensional modeled sampling area and S2 is the deployed area of the borehole core.
In the embodiment, the surface joint distribution probability density function of the strip mine slope rock mass and the internal joint distribution probability density function of the strip mine slope rock mass are fused, and finally, the real surface-inside joint distribution function of the strip mine slope is obtained.
The invention provides a storage medium, which stores computer instructions for executing any one of the methods for determining strip mine slope rock mass joint distribution parameters when a computer executes the computer instructions.
The invention provides a strip mine slope rock mass joint distribution parameter measuring system, which comprises at least one processor; and a memory communicatively coupled to the at least one processor; wherein the memory stores instructions executable by the one processor to cause the at least one processor to:
obtaining surface joint distribution parameters of strip mine slope rock mass;
obtaining the internal joint distribution parameters of strip mine slope rock mass;
and calculating the surface-interior joint distribution parameters of the strip mine slope rock mass according to the surface joint distribution parameters of the strip mine slope rock mass and the internal joint distribution parameters of the strip mine slope rock mass.
The foregoing is considered as illustrative only of the principles and preferred embodiments of the invention. It should be noted that, for those skilled in the art, several other modifications can be made on the basis of the principle of the present invention, and the protection scope of the present invention should be regarded.
Claims (10)
1. A method for measuring joint distribution parameters of strip mine slope rock mass is characterized by comprising the following steps:
obtaining surface joint distribution parameters of strip mine slope rock mass;
obtaining the internal joint distribution parameters of strip mine slope rock mass;
and calculating the surface-interior joint distribution parameters of the strip mine slope rock mass according to the surface joint distribution parameters of the strip mine slope rock mass and the internal joint distribution parameters of the strip mine slope rock mass.
2. The method of determining the jointed distribution parameters of strip mine slope rock mass according to claim 1,
the method for obtaining surface joint distribution parameters of strip mine slope rock mass comprises the following steps:
and (3) carrying out three-dimensional geometric image synthesis processing on the image of the strip mine slope rock mass, reconstructing a three-dimensional model of the strip mine slope rock mass, and reading joint distribution parameters of the surface of the strip mine slope rock mass according to the three-dimensional model.
3. The method of determining the jointed distribution parameters of strip mine slope rock mass according to claim 2,
the surface joint distribution parameters of the strip mine slope rock mass comprise joint trace length, joint line density and joint spacing of each joint on the surface of the strip mine slope rock mass.
4. The method of determining the jointed distribution parameters of strip mine slope rock mass according to claim 3,
the method for obtaining the internal joint distribution parameters of the strip mine slope rock mass comprises the following steps:
designing drilling parameters according to the joint trace length, the joint line density and the joint spacing of each joint on the surface of the strip mine slope rock mass, wherein the drilling parameters comprise a drilling mode, a drilling diameter and a drilling spacing;
and (3) performing horizontal hole and vertical hole construction on the strip mine side slope rock mass, and observing the joint distribution of the vertical holes and the horizontal holes in the rock mass by adopting an intelligent drilling television imager to obtain the internal joint distribution parameters of the strip mine side slope rock mass.
5. The method of determining the jointed distribution parameters of strip mine slope rock mass according to claim 4,
the drilling hole spacing is data between 2 times and 3 times of the joint spacing of each joint on the surface of the strip mine slope rock mass.
6. The method of determining the jointed distribution parameters of strip mine slope rock mass according to claim 4,
the drilling diameters of the horizontal hole and the vertical hole are larger than the diameter of a lens of the intelligent drilling television imager.
7. The method of determining the jointed distribution parameters of strip mine slope rock mass according to claim 3,
and according to a mixed distribution theory, fusing the surface joint distribution parameters of the strip mine slope rock mass and the internal joint distribution parameters of the strip mine slope rock mass to obtain the surface-inside distribution parameters of the joint of the strip mine slope rock mass.
8. The method of determining the jointed distribution parameters of strip mine slope rock mass according to claim 7,
the surface-inside distribution parameter of the strip mine slope rock mass joint is a surface-inside joint distribution function of the strip mine slope.
9. A storage medium storing computer instructions for performing the method of determining surface mine slope rock mass joint distribution parameters of any one of claims 1 to 8 when executed by a computer.
10. A strip mine slope rock mass joint distribution parameter measuring system is characterized by comprising at least one processor; and a memory communicatively coupled to the at least one processor; wherein the memory stores instructions executable by the one processor to cause the at least one processor to:
obtaining surface joint distribution parameters of strip mine slope rock mass;
obtaining the internal joint distribution parameters of strip mine slope rock mass;
and calculating the surface-interior joint distribution parameters of the strip mine slope rock mass according to the surface joint distribution parameters of the strip mine slope rock mass and the internal joint distribution parameters of the strip mine slope rock mass.
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| CN111649672A (en) * | 2020-06-12 | 2020-09-11 | 东北大学 | Method for determining joint rock volume joint number based on drilling and shooting technology |
| CN111830030A (en) * | 2020-03-27 | 2020-10-27 | 中国恩菲工程技术有限公司 | Investigation system and method for joint fracture of mine rock mass |
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