暴雨工况下两种不同方法在下蜀土边坡稳定性分析中的应用对比  

Comparison of two different methods in stability analysis of Xiashu loess slope under rainstorm condition

作　　者：杨正玉[1] 姜啸[1] 李磊[1] 刘顺青[2] YANG Zheng-yu;JIANG Xiao;LI Lei;LIU Shun-qing(The 3rd geological brigade of Jiangsu geology&mineral resources bureau,Zhenjiang 212001,Jiangsu,China;Schoolof Architecture and Civil Engineering,Jiangsu University of Science and Technology,Zhenjiang 212100,Jiangsu,China)

机构地区：[1]江苏省地质矿产局第三地质大队,江苏镇江212001 [2]江苏科技大学土木工程与建筑学院,江苏镇江212100

出　　处：《地下水》2021年第6期183-184,208,共3页Ground water

基　　金：江苏省地质矿产勘查局科研项目(2019KY03);江苏省地质勘查专项资金项目(2018)。

摘　　要：基于极限平衡法中的Bishop条分法,采用两种不同的方式间接反映暴雨对下蜀土边坡稳定性的影响,并将两种方式得到的计算结果进行了对比分析。研究结果表明,两种方式对下蜀土边坡安全系数的影响程度如何与降雨入渗深度、抗剪强度折减度以及边坡坡度密切相关,暴雨工况设计时应根据具体边坡的情况选用相应的方法。研究结果对下蜀土边坡的工程设计及防护具有重要的意义。Based on Bishop strip method of limit equilibrium method,the influence of rainstorm on slope stability of Xi⁃ashu soil is indirectly reflected by two different methods,and the results obtained by the two methods are compared and ana⁃lyzed.The results show that the influence of the two methods on the safety factors of Xiashu loess slope is closely related to rainfall infiltration depth,shear strength reduction and slope gradient.In the design of Xiashu loess slopes under the rainstorm condition,the corresponding methods should be selected according to the specific slope conditions.The research results are of great significance to the engineering design and protection of Xiashu loess slope.

关 键 词：暴雨工况 下蜀土边坡 稳定性 地下水位线 抗剪强度参数 

分 类 号：TU441.35[建筑科学—岩土工程]