中文摘要：

针对三峡库区阶跃型滑坡,以白家包滑坡为例,统计分析滑坡位移、变形速率和裂缝监测数据。显示滑坡在2007年6月之前为蠕动变形初期,受降雨和库水位等外界因素的作用,6月滑坡发生剧烈变形,之后一直保持约75°方向滑动。滑坡体中前部位移速率大于后缘,其变形具有牵引式特点。滑体上裂缝与变形位移具有一致性,位移量越大的区域裂缝越发育。将位移速率与降雨、库水位和地下水进行影响机制分析,建立滑坡变形与外界动态影响因素之间的响应关系。结果表明降雨量和库水位变化是引起滑坡季节性变形的主要因素,其中降雨强度、库水位下降及下降速率是导致滑坡位移速率波动大小的关键因子。

英文摘要：

The Baijiabao landslide in the Three Gorges reservoir area has been used as a case study.Statistical analysis of landslide displacement,deformation rate and crack monitoring data,it shows that the landslide was in prime creeping deformation before June 2007.The landslide was acute deformation under the influence of external factors effect in the June month,and then kept about 75°direction sliding.The frontal part of displacement rate was greater than the trailing edge of the landslide.So the deformation of landslide has towing forward characteristics.Cracks and deformation of the landslide were consistent,and the greater displacement of the regional where the crack more development.The mechanism of rainfall,reservoir water level and ground water level effect on seasonal displacement rate of landslide was analyzed.And the response relationship between landslide deformation and external dynamic influential factors was established.The result shows that the rainfall and reservoir water level was the main factors of the seasonal displacement of landslide.Especially,rainfall intensity,drawdown of reservoir water level and the rate of drawdown of reservoir water level were the key factors of the amplitude of the displacement rate.