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Rock structure surface shape anisotropism evaluation method

A technology of anisotropy and evaluation method, which is applied in image data processing, instrumentation, calculation, etc., and can solve the problem of difficult quantitative characterization of anisotropic features.

Inactive Publication Date: 2014-06-25
INNER MONGOLIA UNIV OF SCI & TECH
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Problems solved by technology

Although scholars at home and abroad have made great efforts in this area, due to the complexity of rock structural planes, the quantitative characterization of their anisotropic features is still a difficult point

Method used

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  • Rock structure surface shape anisotropism evaluation method
  • Rock structure surface shape anisotropism evaluation method
  • Rock structure surface shape anisotropism evaluation method

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Experimental program
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specific Embodiment approach

[0033] See figure 1 It is the flow chart of the anisotropy analysis of the rock structural plane morphology.

[0034] Image Acquisition of Structural Surface and Representation of 3D Topography of Structural Surface by Gray Value

[0035] A Canon 60D digital camera was used to obtain the topography of the gypsum structural surface (see figure 2 ), perform image grayscale conversion on the topography image of the structural surface, and scale, and then store the processed data. The flow chart of the gray value of the image representing the three-dimensional shape characteristics of the rock discontinuity plane is shown in image 3 . The specific steps of the scaling determination process in this process are as follows:

[0036] (1) After actual measurement, the difference between the highest point and the lowest point of the structural surface ( ) is 9mm;

[0037] (2) According to the statistical results of the gray value of the structural surface image, the maximum ...

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Abstract

The invention provides a rock structure surface shape anisotropism evaluation method which comprises the steps that (1) rock structure surface three-dimensional shape data are obtained; (2) according to an experiment variation function formula, a point pair in the structure surface analyzing direction is computed, and a development tendency chart following changing is drawn; (3) a variation function model is determined, function model fitting is carried out, and then a model parameter range a and a base table C are determined; (4) a dimensional method is used, and H (represented by a and C) is used for representing structure surface anisotropism features; and (5) values in all directions of structure surfaces are computed according to the steps (2), (3) and (4), and accordingly the anisotropism features of the rock structure surfaces are analyzed. According to the method, the rock structure surface shape anisotropism can be effectively represented in a quantification mode, convenience and accuracy are achieved, and a basis is provided for further and comprehensive evaluation of rock structure surface shearing strength.

Description

technical field [0001] The invention relates to a method for evaluating the anisotropy of rock structural surface morphology, which belongs to the field of rock mechanics. Background technique [0002] A large number of studies have shown that there is obvious anisotropy in the mechanical behavior and hydraulic properties of the structural surface, and this characteristic largely depends on the anisotropy of the structural surface morphology. Therefore, it is of great theoretical significance and practical engineering application value to deeply study the anisotropy characteristics of rock structural planes. Scholars at home and abroad have done a lot of work on the anisotropy of rock structural planes, mainly using the method of geographic information system, the method of fractal theory description, the description of cumulative power spectral density index, the roughness of profile lines in different directions of structural planes, etc. Degree analysis methods have been...

Claims

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Application Information

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IPC IPC(8): G06T7/00
Inventor 陈世江郭灵飞
Owner INNER MONGOLIA UNIV OF SCI & TECH
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