Research on uniaxial compression of jointed rock mass based on numerical simulation

Author:

Yin Yantian,Li Guilin,Liu Yang,Jiang Xiang,Luan Weijie

Abstract

Abstract Jointed rock mass is a material with anisotropic strength and coexistence of continuous and discontinuous media. In order to study the mechanical behavior of rock mass impacted by the spatial distribution of joints, RFPA2D, which is a discrete element geotechnical engineering simulation, is employed in this paper. Based on the basic rock mechanical parameters obtained from uniaxial compression experiment, the influence of joint inclination angle on rock strength and strain path is explored. The simulation results show that: Cracks will cause large initial damage to the rock mass, resulting in a significant decrease in the peak strength of the specimen compared with the intact rock mass. Meanwhile, it decreases the stage of elastic deformation, and it has the strongest impact to strain path when joint angle equals to 90°.

Publisher

IOP Publishing

Subject

General Engineering

Reference13 articles.

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3. Coalescence of fractures under shear stresses in experiments [J];Shen;Journal of Geophysical Research: Solid Earth,1995

4. Preliminary study on uniaxial compressive properties of rock-like specimen with non-consecutive joints[J];Yan;China Mining Magazine,2020

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