中文摘要：

结合工程实际情况及当地气象资料，采用饱和-非饱和渗流理论，对广西六河高速公路某路堤边坡安全系数变化规律进行数值模拟，研究边坡在连续降雨条件下的稳定性，以此来指导路堤边坡坡比设计。研究结果表明，降雨入渗引起路堤边坡坡面以下水位线大幅上升，而对路堤中部地下水位线影响较小；边坡安全系数受边坡坡比、初始地下水位线等因素的影响，在连续降雨条件下，路堤边坡安全系数随边坡坡比的增大而减小，随初始水位线的下降而增大。在进行不同地区的路堤边坡坡比设计时，应结合当地初始地下水位线及实际降雨情况，选择合适的边坡坡比。

英文摘要：

Combined with practical engineering and Local meteorological data,the saturated-unsaturated seepage theory is used on a embankment slope of Six River highway in Guangxi on stability safety factor variation to numerical simulation,and the slope stability during continuous rainfall is studied,to guide optimization design of embankment slope ratio.The results show：a significant increase of the water line below embankment side slope dues to rainfall infiltration,the less impact on the groundwater table in central embankment.Safety factor is affected by slope slope ratio,the initial groundwater table and other factors.Under continuous rainfall conditions,embankment slope safety factor decreases with slope ratio in-creases,and increases with the initial water level drop.During embankment slope design for different regions,combined with local initial groundwater table and actual rainfall,a suitable slope slope ratio could be obtained.