长江科学院院报2016，Vol.33Issue(8)：114-119,6.DOI:10.11988/ckyyb.20150486
库水位间歇性下降对堆积体滑坡稳定性的影响
Influence of Intermittent Drawdown of Reservoir Water Level on the Stability of Accumulation Landslide
摘要
Abstract
Rapid drawdown of reservoir water level is adverse to landslide stability .In view of this , we propose that the reservoir water level declines intermittently .On the basis of traditional analysis of persistent drawdown of water level, we analyzed the influences of intermission and intermittent drawdown of water level on the stability of land -slide by using Geo-Studio software .An accumulation landslide in Three Gorges reservoir area was taken as an exam-ple.Research results show that intermission is in favor of the dissipation of pore water pressure in the landslide ;meanwhile , lag effect of groundwater level ’ s decrease caused by rapid drawdown of reservoir weakens and hydraulic gradient decreases;when we compare reservoir intermittent drawdown with reservoir persistent drawdown , landslide stability factor of the former is bigger , but stability factor is not in proportion with intermission;under the multistage intermittent drawdown of reservoir , stability factor has obviously improved ,which is greater than 5%.Finally, in or-der to optimize the landslide ’ s stability, we should reasonably arrange reservoir drawdown and intermittent time .关键词
库水位间歇性下降/堆积体滑坡/孔隙水压力/水力梯度/滑坡稳定性/Geo-Studio/稳定系数Key words
intermittent drawdown of reservoir water level/accumulation landslide/pore water pressure/hydraulic gradient/landslide stability/Geo-Studio/stability factor分类
天文与地球科学引用本文复制引用
肖志勇,邓华锋,李建林,胡安龙,李春波,常德龙..库水位间歇性下降对堆积体滑坡稳定性的影响[J].长江科学院院报,2016,33(8):114-119,6.基金项目
国家自然科学基金项目（51309141）；水利部公益性行业科研专项（201401029）；三峡大学研究生科研创新基金项目 （）
