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Discontinuous deformation analysis method based on random strengths of rock mass structure surfaces

A random strength and deformation analysis technology, applied in special data processing applications, instruments, electrical digital data processing, etc., can solve problems such as deviations in calculation results and inconsistencies with the actual conditions of rock mass, and achieve accurate calculation and analysis results

Active Publication Date: 2017-05-17
CHINA INST OF WATER RESOURCES & HYDROPOWER RES
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Problems solved by technology

However, the existing DDA method still uses the fixed value strength of the structural plane for calculation and analysis. Although it is simple and clear, it does not match the actual situation of the rock mass. The calculation results often have deviations and cannot reflect the actual situation well.

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  • Discontinuous deformation analysis method based on random strengths of rock mass structure surfaces
  • Discontinuous deformation analysis method based on random strengths of rock mass structure surfaces
  • Discontinuous deformation analysis method based on random strengths of rock mass structure surfaces

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Embodiment Construction

[0040] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

[0041] The discontinuous deformation analysis method based on the random strength of the rock mass structure plane disclosed by the present invention comprises the following steps:

[0042] S1: Obtain the mean value and standard deviation corresponding to the strength parameters of different types of structural planes in the rock mass;

[0043] The rock mass contains a total of m structural surfaces, which are divided into n types. According to the results of relevant indoor mechanical tests, through regression analysis, the mean value and standard deviation corresponding to the strength parameters of the n types of structural surfaces in the rock mass are obtained; specifically include:

[0044] S11: Carry out multiple sets of shear strength tests on the i-th type of structural plane in the rock mass, and obtain the sample values ​​of shear s...

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Abstract

The invention provides a discontinuous deformation analysis method based on random strengths of rock mass structure surfaces. Firstly, the structure surfaces in the rock masses are classified, strength parameters corresponding to the different types of structure surfaces are obtained through relevant mechanical tests, including mean values and standard deviations of cohesive forces, frictional angles and single-axial tensile strengths; secondly, the random strengths of the corresponding structure surfaces are generated by utilizing a coordinate transformation method according to the mean values and standard deviations of the strength parameters of the types of structure surfaces; finally, based on the random strengths of the structure surfaces, discontinuous deformation analysis is conducted on the rock masses, including calculation of sliding friction force based on the random strengths and contact judgement, opening-closing state solution and the like based on the random strengths. By the adoption of discontinuous deformation analysis method, structure surface strength values are close to the actual situations of the rock masses, and calculation results of discontinuous deformation analysis are accurate and real.

Description

technical field [0001] The invention relates to a discontinuous deformation analysis method based on the random strength of a rock mass structure plane, and belongs to the technical field of water conservancy and hydropower engineering. Background technique [0002] In the stability analysis of rock mass engineering, various analysis methods are becoming more and more mature. The results obtained by the classic limit analysis method and the modern numerical analysis method are basically the same and can be mutually confirmed. The method itself is no longer a rock mass stability analysis. restrictive factors. The main factor affecting the analysis results is the strength parameter of the rock mass. For the value of strength parameters, deterministic methods are traditionally used. Geological surveys and laboratory tests are used to classify structural surfaces in rock mass and give a set of definite strength parameters for each type of structural surface. In the numerical s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50
CPCG06F30/20
Inventor 张国新雷峥琦程恒
Owner CHINA INST OF WATER RESOURCES & HYDROPOWER RES
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