摘要
以赤水河谷旅游公路K93+203~K93+496段在施工过程中发生的降雨诱发型滑坡为研究对象,在现行规范要求的方法的基础上,将有限元分析法和极限平衡法相结合,讨论在持续降雨与地下水变化的相互作用下边坡的触滑机制和治理措施。通过分析发现:该滑坡目前的稳定性差,强降雨和地下水相互作用为滑坡形成的主要诱因;该滑坡滑动面位置与边坡土体的透水性相关,边坡稳定性系数与强降雨时间有一定相关性,边坡失稳发生在不透水边界上。此外,对抗滑桩桩身受力状态进行了分析,可为设计方案优化提供参考。
Taking the rain-induced landslides during the construction of the K93+203~K93+496 section of the Chishui Valley tourist highway as the research object,on the basis of the methods required by the current specifications,the finite element analysis method and the limit equilibrium method were combined to explore the slope slip mechanism and treatment measures under the interaction of continuous rainfall and groundwater changes.Through analysis,it is found that the current stability of the landslide is poor,and the interaction between heavy rainfall and groundwater is the main cause of landslide formation;the position of sliding surface of the landslide is related to the permeability of the slope soil;the coefficient of slope stability has a certain correlation with the time of heavy rainfall,and the slope instability occurs on the impervious boundary.In addition,the stress state of the anti-slide pile body was analyzed,which provides a reference for the optimization of the design scheme.
作者
孙云龙
王艳坤
刘杰
段彦福
SUN Yun-long;WANG Yan-kun;LIU Jie;DUAN Yan-fu(Xinjiang Transportation Planning,Survey and Design Institute,Urumqi 830006,Xinjiang,China;School of Water and Architectural Engineering,Shihezi University,Shihezi 832003,Xinjiang,China)
出处
《筑路机械与施工机械化》
2020年第7期50-55,共6页
Road Machinery & Construction Mechanization
基金
安徽省自然科学基金项目(KJ2014A092)
新疆维吾尔自治区交通厅科技项目(2013(19))。
关键词
滑坡
地下水
抗滑桩
有限元
landslide
groundwater
anti-slide pile
finite element
