暴雨条件下赣西南山区半填半挖路基高边坡稳定性研究  

Study on the Stability of High Side Slope of Half-fill and Half-cut Subgrade in Mountainous Area of Southwest Jiangxi Province under Rainstorm

作　　者：梁冲 LIANG Chong(Jiangxi Provincial Communications Investment Group Co.,Ltd.Project Construction Management Company,Nanchang 330000,China)

机构地区：[1]江西省交通投资集团有限责任公司项目建设管理公司,南昌330000

出　　处：《价值工程》2025年第10期126-128,共3页Value Engineering

摘　　要：为探究暴雨对半填半挖路基高边坡稳定性的影响,以遂川至大余高速公路某半填半挖路基高边坡为研究背景,利用有限元差分软件FLAC3D分析了不同工况下半填半挖路基高边坡稳定性。结果表明:①边坡位移、路基面沉降量、最大剪应力增量随着降雨时间的持续而增加,并且路基填方区的沉降增量大于挖方区沉降增量。②边坡安全系随降雨时间持续逐渐降低,18h后边坡处于失稳状态,此时应采取相应措施。In order to explore the influence of rainstorm on the stability of high side slope of half fill and half cut subgrade,the stability of high side slope of half fill and half cut subgrade under different working conditions was analyzed by using the finite element difference software FLAC3D,taking a high side slope of half fill and half cut subgrade of Suichuan Dayu Expressway as the research background.The results show that:①Slope displacement,roadbed surface settlement,and maximum shear stress increment increase with the duration of rainfall,and the settlement increment in the roadbed filling area is greater than that in the excavation area.②The slope safety system gradually decreases with the duration of rainfall,and after 18 hours,the slope becomes unstable.At this time,corresponding measures should be taken.

关 键 词：半填半挖路基 数值模拟 稳定性 安全系数 

分 类 号：U417[交通运输工程—道路与铁道工程]