灰岩强度特性的三轴压缩试验分析

Analysis of Stress-Strain Relationships for Limestone by Triaxial Test

对灰岩进行三轴压缩试验 ,分析与比较了其应力、应变关系曲线 ,并进行了曲线拟合 .结果表明 ,岩石的变形可以分为 5个不同的阶段 ,围压对岩石的应力、应变关系有一定影响 ,用多项式函数拟合应力、应变关系曲线是比较理想的 .而依据岩石的应力、应变关系可以在一定的强度理论下得到强度参数c ,φ值 ,能为有关工程提供参考与借鉴 .

The stress strain relationships for limestone from triaxial tests are analyzed and compared, and curve fitting of the relationships is performed. The result shows that the deformation of limestone can be divided into five stages, that the confining pressure has a certain influence on the stress strain relationships, and that the stress strain relationships can be ideally fitted by polynomial functions. According to the relationships, the strength parameters c and φ can be obtained, providing a reference for related engineering projects.