基于Fredlung&Xing非饱和参数与库水位骤降下的边坡渗透稳定性研究  

Study on Slope Permeability Stability Based on Fredlung & Xing Unsaturation Parameters and Sudden Drop of Reservoir Water Level

作　　者：钟伟莉 Zhong Weili(Guangdong Xiangshi Construction Co.,Ltd.,Zhongshan 528470,Guangdong)

机构地区：[1]广东祥实建设有限公司,广东中山528470

出　　处：《陕西水利》2022年第10期9-14,共6页Shaanxi Water Resources

摘　　要：为研究不同Fredlung&Xing非饱和参数对库水位骤降下滑坡的渗透特性及稳定性的影响,利用岩土工程专业软件geo-slope中的slope/w模块以及seep/w,以某库区滑坡为例,分析不同非饱和参数对不同库水位骤降下滑坡不同监测点的孔隙水压力变化以及滑坡稳定性的变化规律。计算结果表明:随着库水位的下降,不同滑坡监测点的孔压也不断减小,滑坡的安全系数总体上呈现先减小后增大的变化规律;a值较小、m值较大以及n值较大情况下发生库水位骤降时,滑坡的最小安全稳定系数相对较小。In order to study the influence of different Fredlung & Xing unsaturated parameters on the permeability characteristics and stability of the landslide due to the sudden drop of the reservoir water level, the slope/w module and the seep/w in the geo-slope professional software of geotechnical engineering were used. Taking a landslide in a reservoir area as an example, the change law of pore water pressure and landslide stability of different unsaturated parameters for different monitoring points of the sudden drop of water level in different reservoirs and landslide were analyzed. The calculation results show that: as the reservoir water level drops, the pore pressure of different landslide monitoring points also decreases continuously, and the safety factor of the landslide generally shows a variation law of first decreasing and then increasing;When the value of a is small, the value of m is large, and the value of n is large, when the reservoir water level suddenly drops,the minimum safety stability factor of the landslide is relatively small.

关 键 词：Fredlung&Xing非饱和参数 库水位骤降 非饱和渗流 滑坡稳定 

分 类 号：TU432[建筑科学—岩土工程]