摘要
确保边坡稳定是水利工程设施正常施工与安全运营的前提.以云南省昭通市喇叭溪水电站厂房后某边坡为研究对象,在获取边坡岩土体物理力学参数的基础上,使用极限平衡分析法计算边坡稳定性系数为1.137,根据《水利水电工程边坡设计规范》(SL368-2007),稳定性系数不满足安全性要求,需要对边坡进行加固.再考虑不同降雨强度即耦合作用下边坡稳定性分析,结果表明,随着降雨增强,基质吸力不断减小,岩体软化,稳定性系数大幅降低.在实际工程中有必要对边坡进行渗流稳定性分析.研究成果也为喇叭溪水电站厂房后边坡分析设计提供了建议和参考依据.
Ensure slope stability is the premise of normal construction and safe operation of hydraulic engineering facilities.Taking the slope behind factory building of Labaxi hydropower station in Zhaotong,Yunnan province as the research object,on the basis of obtaining the physical and mechanical parameters of rock and soil mass of slope,the slope stability coefficient calculated by limit equilibrium analysis method is 1.137.According to the code for slope design of water conservancy and hydropower projects(SL386-2007),the stability coefficient does not meet the safety requirements,so the slope needs to be strengthened.Then to consider the slope stability analysis under the coupling effect of different rainfall intensity.The results show that with the increase of rainfall,the matric suction decreases,the rock mass softens and the stability coefficient decreases greatly.It is necessary to analyze the seepage stability of slope in practical engineering.The research results also provide suggestions and reference for the analysis and design of the rear slope of the Labaxi Hydropower station.
作者
梁淼
宋腾蛟
刘英
于立宏
LIANG Miao;SONG Teng-jiao;LIU Ying;YU Li-hong(School of urveying and exploration engineering,JiLin Jianzhu university,Changchun 130118,China)
出处
《吉林建筑大学学报》
CAS
2022年第6期21-26,共6页
Journal of Jilin Jianzhu University
基金
吉林省教育厅“十三五”科学技术项目(JJKH20190874KJ)
作者简介
梁淼(1998~),男,陕西省咸阳市人,硕士研究生;通讯作者:宋腾蛟,男,吉林省农安县人,讲师,博士.E-mail:695073389@qq.com
