A Calculation Method of Joint Surface Roughness Based on Shape Correction

Abstract

The invention discloses a joint surface roughness calculation method based on shape correction, which includes: establishing an x-y coordinate system on the rock joint surface to be measured; drawing grid lines; determining a standard horizontal plane to obtain each grid point Elevation; select the measurement direction, draw a parallel line along the measurement direction and take the calculation point; obtain the elevation of each calculation point by linear interpolation according to the elevation of each grid point and the coordinates of the calculation point; calculate the height difference between adjacent calculation points, Record it as an interval section; analyze the undulating state of the entire rock joint surface, judge the slope section according to the height difference, count the number and length of the interval section included in each slope section, and perform correction calculation; calculate the final roughness of each interval section The roughness statistical value of each straight line segment to be measured and the roughness statistical value of the entire rock joint surface are obtained. The present invention is based on the entire joint surface and comprehensively considers the influence of the rock joint surface, and can obtain roughness statistical values ​​in different directions, and the calculation result is more accurate.

Description

technical field [0001] The invention relates to a method for calculating joint surface roughness based on shape correction, and belongs to the technical field of geotechnical engineering measurement. Background technique [0002] In geotechnical engineering, roughness is an important factor affecting the mechanical properties of rock structural surfaces. For example, the shear strength of structural surfaces and the seepage characteristics of joint fissures are closely related to the roughness of structural surfaces. In many engineering applications , all need to estimate the roughness of the rock joint surface. In engineering applications, it is found that the existing methods for determining the roughness coefficient have the following disadvantages and deficiencies: most of the existing theoretical methods only consider the roughness characteristics of a certain aspect of the rock joint surface, and cannot fully describe the situation of the joint surface, such as the joi...

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art. Most of the existing theoretical methods only consider the roughness characteristics of a certain aspect of the rock joint surface, which cannot fully describe the situation of the joint surface, resulting in relatively large description errors of the roughness coefficient. large, and does not consider the undulating shape of the joint surface, which expands the problem of error

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