石膏角砾岩蠕变特性试验研究  

Testing study on creep properties for gypsum breccias

作　　者：宋飞[1] 赵法锁[1] 李亚兰[1] 

机构地区：[1]长安大学地质工程系,西安710054

出　　处：《水文地质工程地质》2005年第3期94-96,共3页Hydrogeology & Engineering Geology

摘　　要：对石膏角砾岩进行了单轴、三轴蠕变试验,获得了不同围压下的蠕变曲线。对其蠕变特性进行了综合分析,结果表明,其蠕变具有非线性及加速蠕变特性,而且不同围压对蠕变的影响很大。根据试验结果,按遗传蠕变理论建立了石膏角砾岩的非线性蠕变方程,该方程能描述石膏角砾岩的非线性及加速蠕变特性,通过回归分析,确定了蠕变参数数值。The uniaxial and triaxial creep tests of gypsum breccias are made and creep curves under different confining pressure are got. After analyzing creep properties comprehensively, the results are obtained that gypsum breccias have the creep properties of nonlinearity and acceleration, and confining pressure has great influence on creep. According to the test results, the nonlinear creep equation of gypsum breccias is established based on genetic creep theory, which can describe the nonlinear and accelerated creep properties. By means of regression analysis, the values of creep parameters are obtained.

关 键 词：蠕变试验 非线性 加速蠕变 蠕变方程 

分 类 号：P588.247[天文地球—岩石学] TU451[天文地球—地质学]