中文摘要：

以连霍高速公路洛三临路段的改扩建工程为背景,应用岩土工程分析软件Geo-Studio对山岭重丘区高速公路中典型填方路基和挖方路基的持续降雨渗流问题进行了数值模拟,分析了路基中渗流场和孔隙压力随降雨时间的变化情况。计算结果表明：随着降雨时间的增加,存在负孔隙水压力的路基土区域不断缩小,路基稳定性逐渐变差;降雨初期,路基中主要是降雨引起的垂直渗流,随着降雨时间的增加,伴随垂直渗流的还有水位差引起的水平渗流;在持续降雨的条件下,应多注意路基边坡和挖方路段两侧边坡的稳定性。

英文摘要：

The seepage problem of typical fill-subgrade and cut-subgrade in Luoyang - Sanmenxia - Linbao section of Lianyungang - Huoerguosi expressway caused software Geo-Studio, and the variations of seepage field by persistent rainfall are numerical simulated by and pore-pressure of subgrade during the rainfall duration are analyzed. The calculation results show that （ 1 ） the subgrade area with negative pore pressure is steadily shrunk and the stability of subgrade is gradually getting worse and time; （2） at the beginning of rainfall, the form of seepage in the subgrade worse with the increase of rainfall is mainly vertical seepage caused by rain, subsequently, horizontal seepage induced by water-head difference seepage ; （3） more attention should be paid to the slope stability of highway soil s of persistent rainfall. arises along with vertical ubgrade under the condition