关于边坡稳定性分析中几个问题的讨论

Study on Issues about the Analysis of Slope Stability

通过对极限平衡分析方法发展过程的回顾,总结了条分法的基本思路和普遍共识。在此基础上,通过推导建立"不平衡推力法"的显式解和隐式解,以实例的对比计算分析,讨论了该方法与极限平衡方法因假定条件不同所导致的计算结果差异,分析讨论了不平衡推力法及其安全系数的适用合理性。最后简要分析了边坡外侧水位骤降对边坡稳定性的重要影响。

Based on a brief review of the evolution history of limit equilibrium methods for slope stability analysis, the basic analytic procedures and principals are summarized. Taking these well-accepted principles as a comparison base, and through the deducing procedures and applications of the methods of both direct and indirect unbalanced slice thrust force, their applicability and rationality are discussed. Finally, the important influences of the rapid drawdown at the outside of slope on the slope stability are briefly analyzed.