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2～10MPa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。
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.
出处
《岩土力学》
EI
CAS
CSCD
北大核心
2007年第S1期111-113,共3页
Rock and Soil Mechanics
基金
雅砻江水电开发联合研究基金(No.50639090)
关键词
灰岩
三轴压缩
试验
limestone
different confining pressures
strength and deformability
triaxial testing
