A numerical study on failure behavior of rock containing three-dimensional pre-existing flaws

被引：0

作者：

Zheng, W. W. ^{[1
]}

Lin, P. ^{[1
]}

Kang, S. Z. ^{[1
]}

Hu, H. ^{[1
]}

机构：

[1] Tsinghua Univ, State Key Lab Hydrosci & Engn, Beijing 100084, Peoples R China

来源：

ROCK MECHANICS: ACHIEVEMENTS AND AMBITIONS | 2012年

关键词：

COMPRESSION; SIMULATION;

D O I：

暂无

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Based on mesoscopic damage mechanics and finite element method, numerical code RFPA(3D) is employed to simulate the failure process of rock containing 3-D flaws under true triaxial loading condition. Investigation on the failure behavior of specimens containing a single 3-D flaw with different pre-existing angle, study on the coalescence mechanism of specimens contained multiple 3-D flaws. The numerical simulation results showed that peak strength of the rock and the crack propagation was influenced by lateral stress and the angle of pre-existing flaw. With a small angle, the crack initiation is not occur in the tip of flaw. The coalescence mechanism of multiple 3-D flaws mainly includes shear mode, tensile mode, mixed mode, and traction mode, which depend on the distribution of pre-existing flaws.

引用

页码：453 / 457

页数：5

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