Engineering rock mass fracture degradation numerical simulation method based on continuous medium

Abstract

The invention belongs to the technical field of rock mass engineering, and discloses an engineering rock mass fracture degradation numerical simulation method based on a continuous medium, which comprises the following steps: collecting and sorting engineering related rock mass data, and performing corresponding classification according to different conditions; establishing a model by utilizing finite element numerical simulation software; setting numerical parameters of the applied project, wherein the range condition in the project is limited by utilizing threshold conditions in multiple aspects; adopting finite element numerical simulation software for simulating an engineering implementation process, carrying out calculation of engineering rock mass fracture degradation iteration in the simulation process, and establishing a corresponding numerical simulation program. According to the method, numerical simulation calculation in the fractured rock mass environment is carried out by using a numerical simulation method, the dynamic state of excavation disturbance of fractures in the stress redistribution process in surrounding rock is considered, the simulation process is more reasonable and rigorous, then a more real numerical simulation result is obtained, and scientific reference is provided for engineering simulation.

Description

technical field [0001] The invention belongs to the technical field of rock mass engineering, and in particular relates to a numerical simulation method for cracking and deterioration of engineering rock mass based on a continuous medium. Background technique [0002] At present, in the fields of tunneling, mining, hydropower, nuclear power and other geotechnical engineering, especially in underground engineering, artificial excavation disturbance breaks the original stress state of the surrounding rock and causes the redistribution of stress in the surrounding rock. This process makes the original macroscopic and microscopic cracks in the rock develop, expand and even penetrate each other, which deteriorates the mechanical properties of the surrounding rock and undergoes deformation and damage to varying degrees, thereby affecting the stability of the surrounding rock. The stability control of surrounding rock is an important research topic in the field of geotechnical engi...

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Problems solved by technology

[0004] (1) The existing numerical simulation methods for rock mass rupture are not universally practicable. Usually, each project needs to be re-established, which is very time-consuming

[0005] (2) The existing rock mass fracture simulation methods usually ignore some important information, and there is no big data program for in-depth analysis of the results

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