岩土力学2012，Vol.33Issue(11)：3251-3256,6.
三轴压缩条件下单裂隙岩石的破坏特性研究
Experimental study of failure characteristic of single jointed rock mass under triaxial compression tests
摘要
Abstract
A series of high-strength silicon powder mortar material model specimens with single joint which containing the specific size and the particular inclination are made in the laboratory, the failure modes and characteristics of the single jointed specimens are researched by means of the conventional triaxial compression test. Three typical cracks are observed during the test; they are stretching mode crack ( Ⅰ ), sliding mode crack (Ⅱ), tearing mode crack (Ⅲ). Ⅱ, Ⅲ cracks are ubiquitous and I crack is only local existing. The main failure modes are X-shaped shear failure; and the pure shear failure mode is found under specific conditions. The results show that: the expanding regularity of fault cracks has close ties with the preexisting fissures; the confining pressure is the main influencing factors that the failure modes of the single jointed specimens under the conventional triaxial compression test; the preexisting length mainly affect the size of the fracture extension and joint inclination is the cause of the crack initiation.关键词
岩石力学/模型材料/常规三轴压缩试验/破坏特性/Ⅲ型裂纹Key words
rock mechanics/ model material/ conventional triaxial compression test/ failure characteristic/ tearing mode crack分类
建筑与水利引用本文复制引用
肖桃李,李新平,郭运华..三轴压缩条件下单裂隙岩石的破坏特性研究[J].岩土力学,2012,33(11):3251-3256,6.基金项目
国家自然科学基金资助(No.50974100). （No.50974100）
