期刊论文

Chen, Yu

英文

Computers and Geotechnics

0266-352X

2017

86

150-162

10.1016/j.compgeo.2017.01.011

The authors appreciate the constructive comments from the anonymous reviewers. This work is supported by the National Natural Science Foundation of China (51274249, 51604299); the State Key Research Development Program of China (2016YFC0600706); Project funded by China Postdoctoral Science Foundation (2016M600636); Project (SKLCRSM16KF11) funded by the Open Projects of State Key Laboratory of Coal Resources and Safe Mining, CUMT; the Fundamental Research Funds (2012zzts027, 310821161008) and the Postdoctoral Science Foundation of Central South University.

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This paper investigates the influence of a flaw on crack initiation, the failure mode, deformation field and energy mechanism of the rock-like material under uniaxial compression. The results of laboratory test and numerical simulation demonstrate the flaw inclination effect can be classified into three groups: 0–30°, 30–60° and 75–90°. The characteristic stresses increase as the flaw angle increases. The tensile cracks initiate from gentle flaws (α ⩽ 30°) and shear cracks appear at tips of steep flaws (α ⩾ 45°). The input energy, s...