摘要
鉴于当前山区砂性土边坡在雨后时常发生滑坡的现象,为充分研究砂性土边坡滑坡机理进而避免砂性土边坡在雨后滑坡,运用土力学基本原理,结合土的三相组成,假定砂性土边坡土体在雨后达到饱和状态,利用极限平衡法计算饱和砂性土边坡的滑动稳定安全系数,进而推导出饱和砂性土边坡的自然休止角和稳定性系数。在边坡坡度设计取值时,只要小于该自然休止角,则说明饱和砂性土处于安全状态,否则,需要对砂性土边坡进行防治研究和支护设计确保边坡在雨后依旧保证稳定状态。
In view of the phenomenon that the sandy soil slope often landslides after rain,in order to fully study the landslide mechanism of the sandy soil slope and avoid the landslide of the sandy soil slope after rain,using the basic principle of soil mechanics,combined with the three-phase composition of soil,assuming that the sandy soil slope soil reaches the saturation state after rain,and using the limit equilibrium method,which calculate the sliding stability safety system of the saturated sandy soil slope and deduce the natural angle of repose and the stability factor of the saturated sandy soil slope.When grade of side slope is less than the natural angle of repose,which means that the saturated sandy soil is in a safe state.Otherwise,it is necessary to carry out prevention research on prevention and control and to support design on the sandy soil slope to ensure that the slope is still stable after rain.
作者
赵永清
李和志
张洁
Zhao Yongqing;Li Hezhi;Zhang Jie(Nuclear Industry Hengyang No.2 Geological Engineering Exploration Co.,Ltd.,Hengyang 421001,China;Hunan Urban Construction College,Xiangtan 411101,China;School of Civil and Environmental Engineering,Hunan University of Science and Engineering,Yongzhou 425199,China)
出处
《山西建筑》
2020年第5期46-48,共3页
Shanxi Architecture
基金
湖南省教育厅科学研究项目(编号:18C1261):微型桩防治软岩隧道底板隆起机理及工程应用研究
关键词
砂性土
边坡
稳定性
自然休止角
sandy soil
slope
stability
natural angle of repose
