Comprehensive determination method for coefficient of roughness of rock mass structure surface

A roughness coefficient and determination method technology, applied to measuring devices, instruments, optical devices, etc., can solve the problem of not being able to quickly give rock mass structural planes

Inactive Publication Date: 2015-05-13
TAIYUAN UNIV OF TECH
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Problems solved by technology

[0003] The technical problem to be solved by the present invention is to overcome the fact that the existing technology cannot provide the real roughness coefficient value of

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  • Comprehensive determination method for coefficient of roughness of rock mass structure surface
  • Comprehensive determination method for coefficient of roughness of rock mass structure surface
  • Comprehensive determination method for coefficient of roughness of rock mass structure surface

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Embodiment Construction

[0031] Step 1. On the basis of engineering rock mass structural analysis, select a rock mass structural surface with a diameter of 40mm (this method can be used for rock mass structural surfaces of any size, 40mm here is just an example), and use three-dimensional laser scanning or The rock mass discontinuity surface profile instrument obtains the rock mass discontinuity surface topography data;

[0032] Step 2, using the obtained rock mass discontinuity surface morphology data to generate a rock mass discontinuity surface digital elevation model DEM;

[0033] Step 3, on the digital elevation model of the rock mass structural surface, set the sampling interval as 1.6mm (such as Figure 4 1 in middle), draw a spiral line that can represent the morphology of the rock mass structural plane (such as Figure 4 As shown in 2), for such as figure 1 The approximate circular rock mass structural plane shown in Fig. figure 2 and 3 The rock mass structural plane shown is selected as...

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Abstract

The invention relates to a comprehensive determination method for a coefficient of the roughness of a rock mass structure surface. The comprehensive determination method is suitable for the comprehensive determination on the coefficient of the roughness of the multiple forms of rock mass structure surface. Topography data of the integral rock mass structure surface can be obtained at a time through a three-dimensional laser scanner or a rock mass structure surface topography instrument and accordingly the condition that the measurement result of one line segment cannot represent the roughness of the integral rock mass structure surface previously is changed and the measurement result is objective and real. A typical curve is straightened in the space, an X coordinate and a Y coordinate of every point are changed, a Z coordinate of every point remains unchanged, the representation is performed on the roughness of the three-dimensional rock mass structure surface by a two-dimensional method, the comprehensive analysis is performed by four calculation methods, and accordingly a finally determined coefficient value of the roughness of the rock mass structure surface is accurate. The comprehensive determination method is comprehensive in consideration, simple in calculation and accurate in result.

Description

technical field [0001] The invention relates to a method for comprehensively determining roughness coefficients of rock mass structural surfaces, which is suitable for comprehensively determining the roughness coefficients of rock mass structural surfaces in various forms. Background technique [0002] Structural planes are an important part of rock mass and play a major role in controlling the engineering properties of rock mass. The study of structural plane is the basic work for analyzing the stability of engineering rock mass. A large number of studies have shown that the roughness formed by the surface undulation of the structural surface has a great influence on the mechanical properties of the structural surface, especially the shear strength. In 1977, based on a large number of experiments, Barton proposed a method for determining the roughness coefficient (JRC) of grade 10 rock mass structural surface. This method uses a visual comparison, and compares a 10cm-long ...

Claims

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Application Information

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IPC IPC(8): G01B11/30
Inventor 李彦荣霍俊杰吕义清衣浩源张华伟
Owner TAIYUAN UNIV OF TECH
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