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A continuous and discontinuous numerical simulation method for single-triaxial test of almond-shaped basalt

A technology of triaxial test and numerical simulation, applied in electrical digital data processing, design optimization/simulation, instruments, etc., can solve problems such as large discreteness and variability, increasing the difficulty of test and analysis

Active Publication Date: 2021-04-09
INST OF ROCK & SOIL MECHANICS CHINESE ACAD OF SCI
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Problems solved by technology

In addition, the overall dispersion and variability of indoor test results are large, which also increases the difficulty of test testing and analysis to a certain extent.

Method used

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  • A continuous and discontinuous numerical simulation method for single-triaxial test of almond-shaped basalt
  • A continuous and discontinuous numerical simulation method for single-triaxial test of almond-shaped basalt
  • A continuous and discontinuous numerical simulation method for single-triaxial test of almond-shaped basalt

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Embodiment Construction

[0043] In order to further understand the present invention, the present invention will be described in more detail below in conjunction with the specific drawings and the embodiment of continuous-discontinuous numerical method of single triaxial test of almond-shaped basalt.

[0044] Taking a hydropower station under construction as an example, the underground plant area is mainly located in basalt strata. The huge project scale, complex geological conditions, and medium-to-high ground stress lead to significant high-stress cracking problems in the surrounding rock during the excavation process. The failure forms of hard and brittle rock mass such as fracture and relaxation bring great challenges to the stability control of surrounding rocks on site. In addition to revealing geological structures such as large-scale faults, dislocation zones, and joint surfaces, the basalt bodies of underground powerhouses generally have mesoscale amygdala structures in almond-shaped basalts, ...

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Abstract

The invention relates to a continuous and discontinuous numerical simulation method for single triaxial test of almond-shaped basalt, comprising the following steps: obtaining the macro-microscopic structural characteristics of the rock core sample and the statistical model of the amygdaloid; establishing the statistical model based on the amygdaloid can simulate Fine model of rock structure characteristics; use continuous and discontinuous numerical method to carry out numerical simulation of single triaxial test of rock on the fine model, and reveal the failure mechanism of rock and the influence of amygdala on the fracture behavior of the rock from the perspective of macro and micro. This simulation method can reveal its failure mechanism and the influence of amygdala on its mechanical properties and rupture behavior from a macro-micro perspective.

Description

technical field [0001] The invention relates to the technical field of rock mechanics and engineering, in particular to an almond-shaped basalt single-triaxial test continuous and discontinuous numerical simulation method. Background technique [0002] As a natural heterogeneous geological material, various defects (such as micro-cracks, bedding, pores, joints, faults, etc.) inevitably develop inside the rock. The instability and failure of rock engineering is often a dynamic evolution process in which primary defects are continuously closed, cracked, expanded, and penetrated under load, and eventually lead to material failure, which is closely related to the evolution law of cracks. Therefore, exploring the fracture characteristics, mechanism and evolution law of rocks with defects is a basic scientific issue to accurately reveal the disaster-forming mechanism of underground engineering, scientifically predict the disaster-prone model, and effectively prevent and control di...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F30/20G06F119/14
Inventor 张传庆刘振江高阳夏英杰周辉崔国建
Owner INST OF ROCK & SOIL MECHANICS CHINESE ACAD OF SCI
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