Abstract：Triaxial compression for sandstone sample under three paths，i.e. axial loading and radial constant，axial loading and radial unloading，axial constant and radial unloading are realized on WDT–1500 reactive material testing machine. The energy dissipation law in process of deformation under these stress paths and the relationships between energy and rock specimen deformation and confining pressure are analyzed comprehensively. A new method of determining rock failure point is proposed under different paths by studying on the relationship between energy and axial strain. The test results show that there are both energy dissipation and energy release under different stress paths and energy release cause failure. Especially，the energy dissipation is largest under axial loading and radial constant. The energy dissipation of sandstone under these three stress paths are mainly influenced by initial axial pressure and initial radial pressure，but the energy dissipation will obviously bring confining pressure effect in the different deformation stages.
何明明，陈蕴生，韩铁林，余 朝，韩 康. 不同应力路径下砂岩能耗特征的研究[J]. 岩石力学与工程学报, 2015, 34(s1): 2632-2638.
HE Mingming，CHEN Yunsheng，HAN Tielin，YU Zhao，HAN Kang. STUDY OF ENERGY PROPERTIES OF SANDSTONE
UNDER DIFFERENT LOADING PATHS. , 2015, 34(s1): 2632-2638.
谢和平，彭瑞东，鞠 杨. 岩石变形破坏过程中的能量耗散分析[J]. 岩石力学与工程学报，2004，23(21)：3 565-3 570.(XIE Heping，PENG Ruidong，JU Yang. Energy dissipation of rock deformation and fracture[J]. Chinese Journal of Rock Mechanics and Engineering，2004，23(21)：3 565-3 570.(in Chinese))
<body>Your browse does not support frame!</body>
2015, Vol. 34 
