摘要
本文采用卸荷三轴试验,在实验室研究了玄武岩在卸荷状态下的变形和破坏特征。
The deformation and failure features of a basalt on unloading condition were studied in laboratory using unloading triaxial test. The test results show that the rock can be failed not only under loading condition, but also under unloading condition, With the increase in confining pressure of sample failure, the unloading fracture types gradually change from tensile failure to tensile-shear failure. The deformation characteristies of the rock on unloading condition are different from that on loading condition, showing strong dilatancy. In addition, the unloading fracture caused by the release of strain energy is stronger than loading fracture.
出处
《岩石力学与工程学报》
EI
CAS
CSCD
1993年第4期321-327,共7页
Chinese Journal of Rock Mechanics and Engineering
