两种不同岩石在三轴压缩条件下的变形实验  

Triaxial compression test for the deformation of two different rocks

作　　者：王鹰鹏[1] 汪令辉[1] 

机构地区：[1]铜陵有色金属集团股份有限公司冬瓜山铜矿,安徽铜陵244031

出　　处：《中国矿山工程》2013年第5期8-11,共4页China Mine Engineering

摘　　要：利用电液伺服材料控制机试验系统,以不同的围压(5、10、15、20、25、30MPa)分别对矽卡岩和蛇纹岩试样进行三轴压缩试验,分析围压和岩样三轴抗压强度的关系,研究岩样各蠕变阶段非线性黏弹塑性变形特征,并比较两种岩样破坏形式的差异。试验结果表明,在三轴压缩条件下,两种岩样的三轴抗压强度与围压都有良好的线性关系;两种岩样的变形规律基本相同,且最终的破坏方式主要都为单斜面剪切破坏。By using Electro-hydraulic Servo Control System, triaxial compression tests were carried out under different confining pressure （5,10,15,20,25,30MPa） for the samples of skarn and serpentine respectively in order to analyze the relationship of confining pressure and triaxial compressive strength of rock, research viscoelastic-plastic deformation behavior of rock in all creep stages, compare the difference of failure modes of rock. The test results show that the triaxial compressive strength and the confining pressure of rocks are well linear correlation under the triaxial compression condition. The deformation law of the two rocks is basically the same, and the eventual failure mode is mainly the single plane shear failure.

关 键 词：三轴压缩试验 围压 三轴抗压强度 破坏形式 

分 类 号：TU454[建筑科学—岩土工程]