基于传递系数法的滑带土抗剪强度参数反分析研究

摘要

The rational selection of shear strength parameter of soil in slide belt of landslide is the key issue to make a stability analysis and controlling design of landslide.Assessment index of landslide stability combined with its developmental stage were selected properly.Based on the basic principle of back analysis method,using more than back analysis two profiles,shear strength parameter of soil in slide belt can be calculated through interpolation and graphical method.Comparing with the data of indoor shearing stress test,the shear strength parameters from back calculation algorithm finally met the requirement of the project,which can provides reference for stability analysis and treatment of the other landslide.%滑坡滑带土抗剪强度参数的合理选取是进行滑坡稳定性分析和治理设计的关键。本文结合滑坡的发育阶段,合理选取滑坡稳定性评价指标,基于反分析的基本原理,利用至少两个反分析剖面,采用试算、插值和图解法求解滑带土的抗剪强度参数,对比室内剪切试验数据,该方法最终所得参数基本满足工程要求,可为其它滑坡的稳定性分析及治理工程设计提供借鉴。