库岸边坡的计算分析与处治  

Calculation and analysis for slopes at reservoir bank

作　　者：魏业清 李欢[2] 冼长策 Wei Yeqing;Li Huan;Xian Changce(Yunnan Traffic Consulting Co.,Ltd.,Kunming 650000,China;Yunnan Agricultural University,Kunming 650201,China)

机构地区：[1]云南交通咨询有限公司,云南昆明650000 [2]云南农业大学,云南昆明650201

出　　处：《山西建筑》2019年第22期53-56,共4页Shanxi Architecture

摘　　要：水库蓄水后,由于库区水位升高,岸坡内地下水的渗流运动产生变化,可能引发滑坡等地质灾害的发生。采用有限元分析软件,结合某库区已建公路,分析了在水位上升、骤降等多种情况下的岸坡渗流场、安全系数的变化规律。计算结果表明:在库水位骤降工况下,因岸坡内地下水快速外渗产生一定的动水压力,坡体稳定系数迅速减小,此种情况为库岸边坡稳定的最不利工况。Seepage state of groundwater on bank slope changes due to rising of water level in reservoir region after storing water for reservoir,and then geological disasters such as landslides may be caused. Based on the finite element software,distribution of seepage field and variation of safety factor are analyzed combined with engineering examples in this paper. The results show that: the certain dynamic water pressure are formed and the safety factor rapidly decreases,because groundwater in bank slope rapidly seeds outward,which is the most unfavorable condition for the stability of reservoir bank slope.

关 键 词：库岸 非饱和土 渗流 安全系数 

分 类 号：U416.14[交通运输工程—道路与铁道工程]