强降雨高速公路红黏土高边坡稳定及加固研究  

Research on Stability and Strengthening Measures of Highway Red Clay High Slope under Heavy Rainfall

作　　者：谢立松 吴波 刘聪 徐世祥 XIE Lisong;WU Bo;LIU Cong;XU Shixiang(East China University of Technology,Nanchang 330013,China)

机构地区：[1]东华理工大学土木与建筑工程学院,江西南昌330013

出　　处：《河北地质大学学报》2024年第5期77-84,共8页Journal of Hebei Geo University

基　　金：国家自然科学基金项目(52168055);江西省自然科学基金项目(20224BAB204058)。

摘　　要：为研究强降雨下高速公路红黏土高边坡稳定性,建立安全有效的加固防护措施,依托吉康高速改扩建项目某7级边坡工程,运用数值模拟的方法,量化分析了降雨强度与时长对红黏土高边坡稳定性的影响。结果表明:高边坡施工过程中自然稳定性较差,持续降雨易引起施工期边坡失稳,48小时持续降雨480 mm/d时,边坡安全系数降低20.7%,而框格锚杆加固能较好地约束边坡位移,保证暴雨状态下红黏土高边坡的安全稳定性。In order to study the stability of highway red clay high slope under heavy rainfall and establish safe and effective reinforcement and protection measures,this paper relies on a grade 7 slope project of Jikang high-speed reconstruction and expansion project,and uses numerical simulation method to quantify the influence of rainfall intensity and duration on the stability of red clay high slope.The results show that the natural stability of the high slope is poor during the construction process,and continuous rainfall is easy to cause the slope instability during the construction period.When the continuous rainfall is 480 mm/d for 48 hours,the safety factor of the slope is reduced by 20.7%,and the reinforcement of lattice anchor can better constrain the displacement of the slope and ensure the safety and stability of the red clay high slope under the condition of heavy rain.

关 键 词：红黏土高边坡 边坡稳定性 数值模拟 边坡加固 强降雨 

分 类 号：U416.14[交通运输工程—道路与铁道工程]