Quantitative evaluation method of structural surface roughness coefficient anisotropy

A technology of roughness coefficient and quantitative evaluation, which is applied in the direction of measuring devices, instruments, scientific instruments, etc., can solve the problems such as the inability to quantitatively determine the anisotropy of the roughness coefficient of the structural surface

Active Publication Date: 2016-07-13
SHAOXING UNIVERSITY
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Problems solved by technology

[0008] In order to overcome the inability of existing evaluation methods to quantitatively determine the anisotropy of the roughness coefficient of the structural surface, the present invention provides an effective quantitative evaluation method for the anisotropy of the roughness coefficient of the structural surface

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  • Quantitative evaluation method of structural surface roughness coefficient anisotropy
  • Quantitative evaluation method of structural surface roughness coefficient anisotropy
  • Quantitative evaluation method of structural surface roughness coefficient anisotropy

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[0042] Example: A quantitative evaluation method for the anisotropy of the roughness coefficient of the structural surface, the process is as follows:

[0043] First, representative granite structural planes were measured in the field. The roughness coefficients of the structural planes measured along different directions are shown in Table 1, and the anisotropy diagram is shown in figure 1 As shown, the value of m is equal to 0 at this time;

[0044]

[0045] Table 1

[0046] Secondly, since the roughness coefficient varies greatly in each direction, the elliptic equation cannot be used to directly fit the experimental data. When the value of m is 3 and 5 respectively, the roughness coefficient after processing is in The difference in each direction is significantly reduced, and the irregular shape gradually tends to the elliptical shape. But it does not meet the condition of grade ratio analysis, so it is necessary to continue to increase the value of m;

[0047] Then, w...

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Abstract

The present invention provides a quantitative evaluation method of structural surface roughness coefficient anisotropy. The method comprises: selecting an engineering rock structural surface required to be analyzed; uniformly distributing structural surface segments of survey at different directions; drawing the contour curve of each segment of survey through adoption of a contour curve instrument; measuring the structural surface roughness coefficient of each segment of survey; calculating the statistical average value of the structural surface roughness coefficient at each direction in the condition with the same size, and obtaining the roughness coefficient sequence at each direction; performing transformation of each item in the roughness coefficient sequence; fitting the processed structural surface roughness coefficient through adoption of an anisotropy ellipse; and determining the long shaft a and a short shaft b of the anisotropy ellipse at each direction, wherein [Theta] shows the rotation direction, the ratio of the long shaft and the short shaft shows the difference of the max and the min of the roughness coefficient on the anisotropy ellipse at each direction, and the [Theta] shows the predominant direction of the growth of the structural surface roughness. The quantitative evaluation method of structural surface roughness coefficient anisotropy is able to effectively and quantificationally determine the degree of the structural surface roughness coefficient anisotropy.

Description

technical field [0001] The invention relates to a method for evaluating the anisotropy of the roughness coefficient of a structural surface, in particular, the present invention performs grade conversion on the roughness coefficients in all directions of the structural surface, and the coefficients of the grade conversion can be used to represent the roughness coefficients in each direction of the structural surface According to the degree of inhomogeneity of the distribution, performing elliptic function fitting on the converted data can determine the dominant direction of the roughness coefficient of the structural surface, and realize the quantitative evaluation of the anisotropy of the roughness coefficient of the rock mass structural surface. The invention belongs to the field of engineering technology. Background technique [0002] Anisotropy is one of the basic characteristics of the structural plane of rock mass. The degree of anisotropy of the roughness of the struct...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01B21/30
CPCG01B21/30G01V99/005
Inventor 杜时贵雍睿叶军符曦马成荣梁奇峰李博黄曼
Owner SHAOXING UNIVERSITY
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