高应力条件下排土场非线性强度参数及稳定性分析研究

Research on nonlinear strength parameters and stability analysis of waste dump under high stress conditions

通过在实验室内开展排土物料的大型高压静力三轴剪切试验,研究了高排土场物料应力-应变关系及非线性强度指标,为排土场稳定性分析提供基础力学数据。在此基础上建立了能够反映排土场实际边界条件的计算模型,并充分考虑高围压颗粒破碎现象对边坡稳定性的影响,其研究成果对高排土场堆排及加固具有一定的指导意义。

In order to study the stress-strain relationship and nonlinear strength indexes of high dumping materials,the large-scale high-pressure static triaxial shear test of dumping materials was carried out in the laboratory,which can provide basic mechanical data for the stability analysis.On this basis,a calculation model that can reflect the actual boundary conditions of the dump has been established,and the slope stability has been fully considered the impact of the crushing phenomenon under high confining pressure.The research has some significance for heaping and reinforcement of high waste dump.