滑(边)坡稳定性评估探讨

滑(边)坡稳定性评估不仅取决于计算方法本身,更主要的取决于计算参数的选取是否合理,力学参数的选取是否合理将直接关系到所建立的滑(边)坡稳定性评估体系的成败。在根据试验结果等综合确定(潜在)滑动面的黏聚力、内摩擦角的取值区间和建立计算模型基础上,对滑(边)坡反算力学参数时不同发育条件下稳定系数的选取和稳定性计算方法的确定进行了较深入研究,提出了一整套滑(边)坡力学参数的综合选取方法和稳定性评估体系,并以某滑坡为例进行了实际工程应用。采用数值模拟和物理模拟对所建立的稳定性评估体系进行了验证,其工程适用性良好。

Probing into assessment system of landslide/slope stability

Landslide/slope stability assessment not only depends on the calculation method itself, but also depends on the reliability of calculation parameters. It is closely related to the success or failure on the establishment of landslide/slope stability assessment, whether the selection of mechanical parameters is reasonable or not. Basing on the value range of (potential) sliding surface of the cohesive force, internal friction angle by the results of the comprehensive tests and the establishment of calculation model, the selection of stability factor at different developing conditions when mechanical parameters of landslide/slope are back-calculated and the methods of calculation are deeply studied. A set of the comprehensive selection methods of landslide/slope mechanical parameters and stability assessment system are advanced, which are applied to a landslide. Finally, stability assessment system is verified by corresponding numerical simulation and physical simulation, its applicability is good.