摘要
根据巴东县张家屋滑坡的地表位移变化,分析三峡库区高水位运行下,降雨为该滑坡变形的主要影响因素,进一步根据深部(滑带)位移与降雨量的相关性,得出滑带土变形较降雨有一定的滞后性,且滞后时间由后至前逐渐增大,表现出滑带变形由后缘向前缘传递的特征,揭示了渐进推移式滑坡的变形特点,并利用FLAC数值软件模拟了该滑坡在滑体重度逐渐饱和下位移的变化过程,结果与实际变形传递特征一致。
According to the surface displacement of the Zhang Jiawu landslide in Badong County,this paper revealed that the main factor affecting landslide deformation is rainfall,and sliding soil deformation is later than the rainfall,and the lag time is progressively larger from the trailing edge to the leading edge of sliding soil.Meanwhile,by the FLAC,the paper simulated the deformation process of the Zhang Jiawu landslide in gradually saturated weight of sliding,and obtained the same results as those encountered in the actual situation.
出处
《地球与环境》
CAS
CSCD
北大核心
2011年第3期338-342,共5页
Earth and Environment
基金
国家重点基础研究发展规划(973)项目(2011CB710605)
三峡库区三期地质灾害防治监测预警工程资助项目(SXJC-3ZH1D1_合[2009]003)
关键词
渐进推移式滑坡
深部位移监测
变形传递
FLAC模拟
thrust load-caused landslide
deep displacement monitoring
deformation transfer
FLAC simulation
