库水位下降过程中边坡的稳定研究  

The study of the stability of the slopes during the reservoir water level going down

作　　者：魏志华[1] 王进才[1] 

机构地区：[1]重庆交通大学河海学院,中国重庆400074

出　　处：《吉林水利》2011年第3期22-25,共4页Jilin Water Resources

摘　　要：应用非稳定渗流计算原理,求解不同渗透系数和降水速度时水位下降过程中边坡内部的浸润线。通过求出的浸润线,计算了边坡在浸润线影响下的的稳定性。通过对比不同渗透系数和下降速度下边坡的安全系数,分析并解释这些因对边坡稳定影响原因。计算结果显示在水位变化过程中,边坡的安全系数呈现出先变小再变大的变化规律,即边坡存在最危险的水位时刻,大约在水位变幅的1/2左右,在实际工程中,应对此特征水位注意监测。the principle of non-steady flow is used to solve different permeability coefficients and the speed of the saturation line inside slope during the water level going down.Obtained by the saturation line,calculated the slope stability under the saturation line.By comparing the rate of decline of different permeability and the safety factor of slope,it analyze and explain these reasons effecting the slope stability.The results show the safety factor of slope appears the law of changing from smaller to bigger during the change of water level,that is the most dangerous moment is about the water level amplitude of about 1 / 2,in the actual project,it should pay attention to monitor the characteristic.

关 键 词：边坡稳定 浸润线 渗透系数 安全系数 

分 类 号：TV86[水利工程—水利水电工程]