非饱和土边坡降雨入渗特征及其对斜坡稳定性的影响  

Rainfall Infiltration Characteristics of Unsaturated Soil Slope and Its Effect on Slope Stability

作　　者：楼平 程鹏 金国亮[1] 岳灵平 邓慰 LOU Ping;CHENG Peng;JIN Guoliang;YUE Lingping;DENG Wei(Huzhou Power Supply Co.,Ltd.,Huzhou 313000,China;Nanrui Group Co.,Ltd.,Nanjing 211000,China;Wuhan Nanrui Co.,Ltd.,Wuhan 430074,China)

机构地区：[1]国网浙江省电力有限公司湖州供电公司,浙江湖州313000 [2]南瑞集团(国网电力科学研究院)有限公司,江苏南京211000 [3]国网电力科学研究院武汉南瑞有限责任公司,湖北武汉430074

出　　处：《人民珠江》2019年第2期45-50,69,共7页Pearl River

基　　金：国网浙江省电力公司湖州供电公司(5211UZ16000C)

摘　　要：降雨入渗是影响非饱和土斜坡失稳的主要因素,揭示了非饱和土斜坡的降雨入渗特征及其与斜坡稳定性的关系。首先采用试验的方法,研究了斜坡土体的渗透性变化特征,并揭示了土体含水率对其强度的影响;进而采用数值模拟的方法,研究了典型土质斜坡的降雨入渗过程,以及斜坡在降雨条件下的应力应变分布特征;最后采用极限平衡理论计算了不同降雨阶段的斜坡稳定性特征。Rainfall infiltration is the main factor affecting the instability of unsaturated soil slopes.The article revealed the rainfall infiltration characteristics of slope and its relationship with slope stability.First of all,by using the experimental method,the permeability characteristics of slope soil were studied and the influence of soil moisture content on its strength is revealed.In addition,the numerical simulation method was used to study the rainfall infiltration process of typical soil slopes and the stress-strain distribution characteristics of the slopes under rainfall conditions.Finally,the limit equilibrium theory was used to calculate the slope stability characteristics at different rainfall stages.

关 键 词：降雨 非饱和土 滑坡 稳定性 土~水特征 

分 类 号：TU473[建筑科学—结构工程]