摘要
文章通过现场地质调查和地质分析,对龙家岩古滑坡特征及复活机制进行了初步探讨:龙家岩古滑坡主要由黏性土、块石土、碎石土及风化岩构成;形成机制为在前缘河谷下切作用和地下水风化侵蚀作用下,由地震或强降雨诱发的岩体顺层变形滑动;其复活的主要诱发因素是坡脚高速公路开挖及连续的强降雨。
;This article discussed the characteristics and revival mechanism of Longjiayan ancient landslide through field geology survey and geology analysis.the ancient landslide of Longjiayan is mainly composed of cohesive soil, gravel soil, broken-stone soil and weathered rock,its formation mechanism is that the rock mass deformation and sliding induced by earthquakes or heavy rainfall under the un- dercutting action of foreland valley and the groundwater weathering erosion action^its main induction factors for revival are the expressway excavation at slope toe and the continuous heavy rainfall, which are caused by earthquake or strong rainfall.
作者
李海
LI Hai(College of Civil Engineering and Architecture, Guangxi University, Nanning, Guangxi, 53000)
出处
《西部交通科技》
2017年第5期15-18,64,共5页
Western China Communications Science & Technology
关键词
古滑坡
变形特征
复活机理
坡脚开挖
Ancient landslide
Deformation characteristics
Revival mechanism
Slope toe excavation
