软硬岩石卸荷应力规律研究

Study on the law of loading stress of soft and hard Rock

为了了解常规三轴卸荷作用下软、硬岩石应变规律,对软硬岩石分别进行三轴卸荷试验,得到岩石试件在不同围压下的应力应变曲线。通过对比软硬岩石的应力应变曲线,结合岩石岩性数据进行分析对比,比较两者在相同围压下的曲线规律并做出总结。结合有限元分析软件模拟三轴卸荷试验,通过软件模拟得出数据与试验结果进行对比验证。

In order to understand the strain rule of soft and hard rock under conventional triaxial loading, triaxial loading tests were carried out on soft and hard rock to obtain the stress-strain curves of rock specimens under different confining pressures.By comparing the curves of stress and strain of hard and soft rocks, the rock lithology data are analyzed and compared, The curves of the soft and hard rock under the same confining pressure are compared and summarized.Simulation of triaxial unloading test by finite element analysis software, The data obtained by the software simulation and the test results are verified.