基于Geostudio的杜峪滑坡边坡稳定性分析

Analysis of Slope Stability Duyu Landslide Based on Geostudio

摘要: 本文以杜峪滑坡形成的边坡为例，采用Geostudio数值模拟法，基于Morgenstern-Price法和Spencer法两种理论，对边坡在自然工况、地震工况、降雨工况三种工况下的稳定性进行分析。研究结果表明：在自然工况下，边坡处于基本稳定状态；在地震工况下，边坡处于不稳定状态；在降雨工况下，边坡安全系数随降雨时间增加逐渐减小，当降雨16小时后，边坡安全系数趋于稳定，当降雨24小时时，安全系数最小为0.702，边坡处于不稳定状态。对曾经发生过灾害的边坡进行稳定性分析，是灾后处理的必要环节，更是防灾减灾体系的重要支撑，给后续灾害处理方式提供理论参考。

Abstract: Taking the slope formed Duyu landslide as an example, this paper uses Geostudio numerical simulation method, based on Morgenstern-Price method and Spencer method, to analyze the stability of the slope under natural conditions, earthquake conditions and rainfall conditions. The results show that the slope is basically stable under natural conditions. Under seismic conditions, the slope is in an unstable state; under rainfall conditions, the slope safety factor gradually decreases with the increase of rainfall time. When the rainfall is 16 hours, the slope safety factor tends to be stable. When the rainfall is 24 hours, the minimum safety factor is 0.702, and the slope is in an unstable state. The stability analysis of slopes that have been affected by disasters is a necessary link in post-disaster treatment, and it is also an important support for the disaster prevention and mitigation system, providing a theoretical reference for subsequent disaster treatment methods.