Rock strength homogeneity identification method 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., to achieve the effect of avoiding operational complexity and reducing calculation errors

Active Publication Date: 2019-11-22
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 homogen

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  • Rock strength homogeneity identification method based on digital image technology
  • Rock strength homogeneity identification method based on digital image technology
  • Rock strength homogeneity identification method based on digital image technology

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[0035] In the following, the present invention will be further described in conjunction with the embodiments.

[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. The color information of the rock surface is obtained by shooting the image of the rock surface, and the color Calculate the color homogeneity with the distribution characteristics of, and get the functional relationship between the color homogeneity and the intensity homogeneity by fitting, and use this function to solve the rock strength homogeneity, the specific steps are as follows:

[0037] Step 1: Sample preparation;

[0038] 1) Use the method of drilling core to obtain the deep rock sample of the rock to be identified. The surface of the core drilled in the field is threaded and uneven, and the length of the core is also different. The up...

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Abstract

The invention relates to a rock homogeneity identification method based on a digital image technology, which is characterized by comprising steps: sample preparation and image acquisition are carriedout, the rock surface color information is obtained through photographing a rock surface image, the color homogeneity is solved by using the color distribution characteristics, the function relationship between the color homogeneity and the strength homogeneity is obtained through fitting, and the rock strength homogeneity is solved by using the function relationship. The method builds the fittingrelationship between the rock surface color homogeneity and the rock strength homogeneity, and the strength homogeneity of the same type and the same batch of rock samples can be easily calculated based on the image identification technology. The operational complexity brought by the use of indoor basic mechanical test methods can be avoided, and the strength homogeneity calculation error can beeffectively reduced.

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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Application Information

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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
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