Method for determining dimensional size effects of toughness coefficients of typical stone structural surface

A technology of roughness coefficient and size effect, applied in the direction of measuring devices, instruments, etc., can solve the problem that the JRC size effect of rock mass structural plane cannot be well reflected, and achieve the effect of great implementation value and social and economic benefits

Inactive Publication Date: 2005-07-27
JINHUA VOCATIONAL TECH COLLEGE
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Problems solved by technology

The purpose of the present invention is to overcome the roughness coefficient JRC of the rock mass structural surface calculated by the prior art n The value cannot well reflect the shortcomings of the JRC size effect of the rock mass discontinuity plane with different wall rock components, and a method for determining the size effect fractal dimension of the roughness coefficient of a typical rock mass discontinuity plane is provided, which is suitable for partially exposed rock mass Determination of roughness coefficient JRC of rock mass structural surface with size effect on structural surface surface n

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  • Method for determining dimensional size effects of toughness coefficients of typical stone structural surface
  • Method for determining dimensional size effects of toughness coefficients of typical stone structural surface
  • Method for determining dimensional size effects of toughness coefficients of typical stone structural surface

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Abstract

A method for confirming fractal dimension includes preparing section to be measured, drawing contour curve, measuring fluctuation amplitude Ry10 for 10 cm section contour curve and calculating out its roughness coefficient JRGo value solving out expected value E (JRC10) for JRC10; applying the same steps to obtain expected value E (JRC30) for 30cm section, utilizing formula E=(JRC30)=E(JRC10)[L30 / L10]-D to convert out fractal dimension D of JRC dimension effect for typical rock structural plane.

Description

(1) Technical field The invention relates to the size effect fractal dimension D of a typical rock mass structural surface JRC, which is suitable for determining the rock mass structural surface roughness coefficient JRC on the surface of a partially exposed rock mass structural surface n value occasions. (2) Background technology Before the present invention is made, there is still no typical rock mass structural surface JRC size effect fractal dimension D, rock mass structural surface roughness coefficient JRC in the prior art n The determination method of the value is the roughness coefficient JRC of the rock mass discontinuity surface of standard size obtained by measuring the range of the exposed rock mass discontinuity surface 0 value, according to Barton's JRC size effect empirical formula JRC n = JRC 0 [ L n L ...

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Application Information

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IPC IPC(8): G01B21/30
Inventor 杜时贵
Owner JINHUA VOCATIONAL TECH COLLEGE
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