【作者】 熊赞民； 高全臣； 邬爱清； 胡建敏；

【Author】 XIONG Zan-min~1,GAO Quan-chen~1,WU Ai-qing~2,HU Jian-min~2 (1.School of Mechanics and Civil Engineering,CUMT,Beijing 100083,China;2.Yangtze River Scientific Research Institute,Wuhan 430010,China)

【机构】 中国矿业大学力学与建筑学院； 长江科学院岩基研究所；

【摘要】 针对灰岩进行了室内常规三轴试验,对试样在不同围压下的强度和变形特性进行了分析。结果表明:灰岩的变形分为4个阶段,在2～10 MPa的围压范围内,岩石为脆性剪切破坏。其峰值强度、残余强度随围压的增加而增加,但峰值时的变形与围压的大小没有相关性;根据试验数据的回归分析,得到灰岩强度准则的表达式。更多还原

【Abstract】 Triaxial compressive tests on limestone are conducted with a variety of confining pressures that range from 2MPa to 10MPa.This observation causes us to conclude that the deformation of limestone can be divided into four stages and the wreck is brittle cutting,The peak and stub intensity value increase with the confining pressure adding up,but the strain of the stress peak has no relativity to the confining pressure.By the redressing analysis,the formula of relation between intensity parameters is produced.更多还原