Simple measurement method for rock structural plane roughness coefficient

A technology of roughness coefficient and measurement method, applied in the direction of measuring devices, instruments, etc., can solve the problems of tediousness, slow measurement speed, complex calculation formula, etc.

Inactive Publication Date: 2007-10-17
ZHEJIANG COLLEGE OF CONSTR
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Problems solved by technology

[0005] The task of the present invention is to overcome the disadvantages of complex calculation formulas in the prior art, inconvenient oral calculation or cumbersome estimation technology, and

Method used

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  • Simple measurement method for rock structural plane roughness coefficient
  • Simple measurement method for rock structural plane roughness coefficient
  • Simple measurement method for rock structural plane roughness coefficient

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Embodiment Construction

[0058] Table 7 is an embodiment of the present invention. According to the different sampling lengths of Lin'an Dashigu tuff joints, the tooth convex amplitude R of the structural surface profile curve yn The measurement result of , without the aid of a calculator or computer, can be obtained from the formula R A = R Y n L n Calculate the sampling length as L n The relative convex tooth amplitude value R of the surface profile curve of the rock structural plane A and formula JRC n =400R A The calculated sampling length is L n The roughness coefficient JRC of the surface contour curve of the rock structural surface n , and the measurement results are listed in Table 7. Table 7 shows the roughness coefficient values ​​of structural planes with different sampling lengths in Dashigu tuff joints i...

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Abstract

The invention relates to a simple method for measuring roughness coefficient of rock structure surface, including the following steps of: measuring convex tooth amplitude Ryn of rock structure surface; calculating the relative convex tooth amplitude value RA of rock structure surface profile curve with sampling length Ln using the formula RA=RYn/Ln; obtaining the roughness coefficient of rock structure surface profile curve with sampling length Ln by substituting the RA into the formula JRCn=400RA. The method which is simple and convenient for operation and calculation quickly can be performed without the influence of human factor and have great value and social economical benefit with satisfied precision.

Description

(1) Technical field [0001] The invention relates to a simple method for measuring the roughness coefficient of a rock mass structural surface, which is suitable for sampling with a length of L n The roughness coefficient JRC measured by the surface profile curve of the rock structural surface n value occasions. (2) Background technology [0002] Before the present invention was made, the main measurement method for obtaining the roughness coefficient JRC of the structure surface at present is the determination of the roughness coefficient JRC according to the amplitude of the surface contour curve of the structure surface with different sampling lengths proposed by Barton (1982) n The straight-edge graph method [3], as shown in Figure 1. Based on the current analysis of the physical meaning of the modified straight edge method and the size effect of the JRC, the mathematical expression (1) of the modified straight edge method is deduced: [0003] JRC ...

Claims

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Application Information

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IPC IPC(8): G01B21/30
Inventor 杜时贵胡晓飞
Owner ZHEJIANG COLLEGE OF CONSTR
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