强降雨对昔格达土公路边坡稳定性的影响  

Effect of Heavy Rainfall on the Stability of Road Slope with Xigeda Soil

作　　者：丁国盛 DING Guo-sheng(Yunnan China Railway Shuangbai Building Materials Co.Ltd.,Kunming 650200,China)

机构地区：[1]云南中铁双百建材有限公司,昆明650200

出　　处：《工程建设与设计》2022年第6期79-81,共3页Construction & Design for Engineering

摘　　要：以昔格达土公路边坡稳定性为研究对象,分析降雨强度取78 mm/h,降雨历时分别为12 h、24 h、36 h、60 h、72 h 5种工况下的边坡渗流场及稳定性情况。研究结果表明:强降雨对于边坡的稳定性会产生不利影响,尤其是在坡体内部孔隙水压力的变化以及安全系数的变化方面,随着降雨时间的增长,边坡孔隙水压力逐渐增大,边坡的安全系数也逐渐降低。Takingthe slope stabilityof Xigeda earth highwayasthe research object, the seepage field and stabilityof the slope under the rainfall intensity of 78 mm/h and rainfall duration of 12 h, 24 h, 36 h, 60 h and 72 h were analyzed. The results show that: heavy rainfall has an adverse effect on the stability of the slope, especially the changes in the pore water pressure and the safety factor within the slope. With the increase of rainfall time, the pore water pressure of the slope gradually increases. The slope safety factor also gradually decreased.

关 键 词：公路边坡 昔格达土 强降雨 孔隙水压力 边坡安全系数 

分 类 号：U416.14[交通运输工程—道路与铁道工程]