A method for identifying homogeneity of rock strength based on digital image technology
A digital image and recognition method technology, applied in the field of image processing, can solve the problems of not directly measuring rocks, deepening, etc., and achieve the effect of avoiding operational complexity and reducing calculation errors
Active Publication Date: 2021-10-22
ANSTEEL GRP MINING CO LTD
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Problems solved by technology
These research results have promoted the improvement of the rock damage softening statistical constitutive model itself, and deepened people's understanding of the degree of homogeneity, but these methods measure the degree of homogeneity of rock strength through indirect means
So far there is still no effective means to directly measure the homogeneity of rocks
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[0035] The present invention will be further described below in conjunction with embodiment.
[0036] Figure 1- image 3 As shown, a method for identifying the homogeneity of rock strength based on digital image technology of the present invention is characterized in that it includes sample preparation and image acquisition, and obtains rock surface color information by shooting rock surface images, and uses color The distribution characteristics of the rock are used to solve the color homogeneity, and the function relationship between the color homogeneity and the strength homogeneity is obtained by fitting, and the function relationship is used to solve the rock strength homogeneity. The specific steps are as follows:
[0037] Step 1: Sample making;
[0038] 1) Obtain the deep rock samples required to identify rocks by drilling and coring. The surface of the drilled cores is thread-like uneven, the cores are also of different lengths, and the upper and lower surfaces are un...
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The invention relates to a rock homogeneity recognition method based on digital image technology, which is characterized in that it includes sample making and image collection, and obtains rock surface color information by shooting rock surface images, and uses color distribution characteristics to calculate the color information. Homogeneity, and fit the function relationship between color homogeneity and strength homogeneity, and use this function relationship to solve rock strength homogeneity. This method establishes the fitting relationship between the rock surface color homogeneity and rock strength homogeneity, and based on image recognition technology, the strength homogeneity of rock samples of the same type and batch can be easily calculated. It can avoid the operational complexity brought by the indoor basic mechanical test method, and effectively reduce the calculation error of the strength homogeneity.
Description
technical field [0001] The invention belongs to the technical field of image processing, and in particular relates to a method for identifying homogeneity of rock strength based on digital image technology. Background technique [0002] Homogeneity is an important parameter describing the internal uniformity of rock materials. It has a significant impact on rock fracture process and mechanical parameters. It is also one of the important parameters that need to be determined in numerical simulation calculations considering rock heterogeneity. Based on the assumption that the micro-element strength of the rock medium obeys the Weibull random distribution, many scholars have proposed a calculation method for the degree of homogeneity. Based on the theory of rock strain strength, Xu Tao et al. deduced the formula for determining the homogeneity by using the peak point of the uniaxial compression full stress-strain curve. Yang Shengqi et al. introduced the damage proportional coe...
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IPC IPC(8): G01N21/84G01N1/32
CPCG01N1/32G01N21/84
Inventor 韩连生房洪亮卢晓辉范广海雷洪才程关文
Owner ANSTEEL GRP MINING CO LTD