软岩单试件直剪实验方法

Soft rock single test sample shear experiment method

介绍了利用应变控制式直剪仪测试软岩单试件直剪试验的原理、方法,以一个软岩标准试件测定在不同压力下剪切屈服强度,绘制抗剪屈服强度曲线,用最小二乘法或解析法求凝聚力和内摩擦角,并在试验基础上把单试件法和多试件法试验测试结果进行对比,结果数值非常接近,因此是软岩单试件直剪试验方法的可靠性和应用性进行了有益的探索和研究。为软岩单试件直剪试验提供简便的测试方法。

The principle of single test sample shear experiment and experimental method are introduced by strain control instrument. A soft rock single test determines sheared yield strength of different pressurse, drawing shear yield strength in vertical section. We solved cohesive force and inside friction angle by two minimum multiplications or with analytic method. The application and reliability about soft rock single test sample shear experiment beneficial are explored and studied by comparison of the experimental results of single test sample shear experiment with the experimental results of many test sample shear experiments and numerical value is very close. Researches are carried out on the application and reliability of experimental method of soft rock single. It provides a simple and convenient method for soft rock single experiment.