摘要
基于饱和-非饱和渗流理论,针对不同的渗透系数异向性比值,以及不同的渗透系数张量主轴方向与水平方向夹角,对降雨条件下边坡地下水渗流场动态变化进行了数值模拟,分析了降雨过程中边坡孔隙水压力分布规律,得到了边坡安全系数随降雨持续时间的变化规律.数值模拟结果表明,土体各向异性渗流对降雨条件下边坡渗流场及安全系数有着显著的影响.
Based on saturated-unsaturated seepage theory,under persistent rainfall condition,numerical simulation on ground water seepage in a slope having different ratios of anisotropic conductivity and different angles between its principal directions of hydraulic-conductivity anisotropic and horizontal direction are carried out.The change law of pore water pressure and safety factor of slope is gained.Simulation results show that,the soil anisotropic seepage has a significant impact on seepage field and safety factor of slope under the conditions of rainfall Infiltration.
出处
《河南科学》
2009年第10期1285-1288,共4页
Henan Science
基金
三峡大学三峡库区地质灾害教育部重点实验室开放基金(2008KDZ07)
关键词
渗透系数
各向异性
饱和-非饱和
降雨入渗
安全系数
permeability coefficient
anisotropic
saturated-unsaturated
rainfall infiltration
safety factor
