鹤峰场镇滑坡变形对库水位变动的响应及滑坡演化机理研究

三峡水库周期性库水位涨落是引起长江沿岸滑坡变形失稳的主要因素之一。以三峡库区典型堆积层滑坡——鹤峰场镇滑坡为例,重点分析该滑坡变形对库水位变动的响应特征,结果表明鹤峰场镇滑坡发生明显变形对应水位下降阶段;结合滑体地质环境条件,研究了不同水位条件下滑坡的演化特征,与变形监测数据基本一致,验证了数值模拟应用滑坡演化分析的可行性及有效性,该研究为滑坡的有效预测预报奠定了重要基础。

Accumulative Landslide Deformation Features on the Responses of the Reservoir Water Level Variation and the Evolution of the Landslide

Water level fluctuations of the Threee Gorges Reservoir is one of the main factors causing landslides along the Yangtze River to have instability and even failure.Taking landslidein Hefeng for an example,deformation characteristic curves of the accumulative landslide with water level fluctuations is focused on,and result shows significant deformation of landslide in Hefeng occurring at water-level drawdown phase.Combining geological environmental conditions,evolution of landslide is analyzed under different water conditions,and it is consistent with deformation monitoring data,so it verifies that numerical simulation method is feasible and effective.This research provides an important foundation for effective forecasting of landslide.