工程地质学报2016，Vol.24Issue(2)：252-258,7.DOI:10.13544/j.cnki.jeg.2016.02.011
单轴压缩下含表观裂纹盐岩力学特性试验研究
MECHANICAL BEHAVIOR OF SALT ROCK WITH DISCONTINUOUS FISSURES WITH UNIAXIAL COMPRESSION TEST
摘要
Abstract
This paper examines the mechanical behavior of salt rock containing fissure.The uniaxial compressive tests are carried out with a servo-controlled test machine RMT-150B.The effect of discontinuous fissures on strength and deformation of salt rock are analyzed.The discontinuous fissures coalescence the behavior of salt rock and its transfixion mode.The discontinuous fissure extension evolution is mainly divided into two types.The main fissures extended from the initial discontinuous fissures of salt rock specimens are the first type.The second type is that the initial discontinuous fissures of specimens are closed and then new micro-fissures are initiated from other place. They are gathered together and formed the main fissures.At the same time,the secondary fissures grow tardily.The tensile transfixion mode and tension-shear transfixion mode are the main transfixion models for salt rock containing discontinuous fissures.Influenced by their own structure compactness,the paths of fissures coalescence presents obvious zigzag line.Effect of vertical transfixion fissures on deformation modulus of salt rock is larger than that of inclined crack.关键词
盐岩/岩石力学/强度特性/裂纹扩展Key words
Salt rock/Rock mechanics/Strength behavior/Fissure coalescence分类
建筑与水利引用本文复制引用
王伟超,刘希亮,张五交,王利..单轴压缩下含表观裂纹盐岩力学特性试验研究[J].工程地质学报,2016,24(2):252-258,7.基金项目
河南省高等学校重点科研项目（15A410004），河南省高校基本科研业务费专项资金资助项目（NSFRF140145），河南省高校深部矿井建设重点学科开放实验室开放基金资助项目（2014KF-06）资助． （）
