水利学报2017，Vol.48Issue(4)：435-445,11.DOI:10.13243/j.cnki.slxb.20160665
库水波动下堆积层滑坡稳定性研究
Research on the colluvial landslide stability during reservoir water level fluctuation
摘要
Abstract
Colluvial landslide is a very common geological disaster in the Three Gorges Reservoir Area.Changes of water level in different rate significantly influence on landslide stability.Taking the Liangshuijing landslide as an example,the stability of the colluvial landslide were analyzed with ten rates between 0.2 to 2.0 m/day and four different saturated permeability coefficients of colluvial landslide in the process of water rise and drawdown in the reservoir.Based on which,the risk grading scheme of the water level regulation was put forward for the colluvial landslide in the Three Gorges reservoir area,taking v ＜ 0.6 m/day as a lower risk,and 0.6 m/day ＜ v ＜ 0.8 m/day as a medium risks,and v ＞ 0.8 m/day as a high risk.Using the safety coefficient curve calculated under the real fluctuation of water level in the reservoir and the method combined with the geological disaster hierarchies,the long-term risk of landslide process curve was shown intuitively.The results have certain application values for landslide monitoring and warning and reservoir scheduling in Three Gorges Reservoir Area.关键词
三峡库区/堆积层滑坡/库水位变化/渗透系数/稳定性分析/成灾风险Key words
the TGR area/colluvial landslide/water level fluctuation/permeability coefficients/stability analysis/hazard risk分类
建筑与水利引用本文复制引用
赵瑞欣,殷跃平,李滨,王文沛..库水波动下堆积层滑坡稳定性研究[J].水利学报,2017,48(4):435-445,11.基金项目
十二五国家科技支撑重点项目(2012BAK10B01) （2012BAK10B01）
