某高速公路河岸黄土古滑坡成因机制及稳定性分析  

Analysis on Formation Mechanism and Stability of an Ancient Loess Landslide at the River Bank of a Highway

作　　者：王猛[1] 朱冬林[1] 龙称心 WANG Meng;ZHU Donglin;LONG Chengxin(CCCC Second Highway Consultants Co.,Ltd.,Wuhan 430056,China)

机构地区：[1]中交第二公路勘察设计研究院有限公司,武汉430056

出　　处：《路基工程》2018年第A01期181-185,共5页Subgrade Engineering

摘　　要：某岸坡为典型河谷、塬梁地貌,在早期岸坡演化过程中,斜坡受卸荷作用和重力作用下错滑移,形成规模巨大的黄土古滑坡。某高速公路从该滑坡区通过,滑坡的稳定性制约线路的方案。通过钻探、物探、原位剪切试验、深部位移监测,查明滑坡区的环境地质条件,滑坡的物质结构特征,分析其成因机制,并定量计算滑坡安全系数,评价其稳定状态,从而为线路方案的确定、处治工程的设计提供依据。A bank slope is a typical landform of river valley and tableland terrain.During its early evolution,a large ancient loess landslide had been formed due to dislocation sliding caused by load-off and gravity.A highway will across the landslide area.The stability of the landslide will impact the route selection.Find out the environmental geological condition and material structure characteristics of the landslide by drilling,geophysical prospecting,in-situ shear test,and deep displacement monitoring;analyze the formation mechanism,quantitatively calculate the landslide safety coefficient,and evaluate its stability,to provide a basis for route plan making and design of treatment work.

关 键 词：黄土古滑坡 高速公路 成因机制 稳定性 线路方案 

分 类 号：U416.163[交通运输工程—道路与铁道工程]