摘要
下汤章滑坡位于响水水库库内上游右岸,体积约230万m^3,距离水库坝址近约700 m。2003年以来,受响水水库施工影响,下汤章滑坡体"复活",虽经抗滑桩支挡,2008年以来滑坡体上的房屋陆续出现开裂迹象。基于最新的地质勘察资料及监测成果,在前期历次滑坡体安全与稳定性评价的基础上,采用刚体极限平衡法和三维有限单元法,对滑坡体的稳定性进行了深入研究。分析认为,下汤章滑坡体在水库各运行条件下,整体失稳的可能较小,但滑体前缘临河侧稳定性相对较差,需采取支挡措施;中后缘浅表层处于蠕滑变形状态,导致滑坡体上的房屋局部存在拉裂现象。
Xiatangzhang landslide is located at the upstream right bank of Xiangshui reservoir,with a volume of about 2.3 million m3 and a distance of about 700 m from the dam site.Since 2003,influenced by the construction disturbance of Xiangshui reservoir,Xiatangzhang landslide has been revived.Although it is supported by anti-slide piles,the houses on the landslide have been cracked since 2008.Based on the latest geological survey data and monitoring results,and on the previous safety and stability evaluation of landslide mass,this paper uses the rigid body limit equilibrium method and three-dimensional finite element method to conduct in-depth study on the stability of landslide mass.According to the analysis,the possibility of overall instability of Xiatangzhang landslide is small under various operation conditions of the reservoir,but the stability of the front edge of the landslide is relatively poor near the river side,so it is necessary to take supporting measures;the shallow surface of the middle and rear edge is in the state of creep deformation,which results in the local tension crack of the houses on the landslide.
作者
邹德兵
丁刚
熊瑶
傅兴安
ZOU Debing;DING Gang;XIONG Yao;FU Xingan(Changjiang Institute of Survey,Planning,Design and Research,Wuhan 430010,Hubei,China)
出处
《水利水电技术》
北大核心
2020年第S01期250-255,共6页
Water Resources and Hydropower Engineering
基金
国家重大研发课题“岸坡堤坝滑坡监测预警与修复加固关键技术及示范应用”(2017YFC1501200)
关键词
滑坡
开裂
稳定性
刚体极限平衡法
有限单元法
蠕滑变形
landslide
cracking
stability
rigid body limit equilibrium method
finite element method
creep deformation
作者简介
邹德兵(1977—),男,高级工程师,硕士,主要从事水工结构设计。E-mail:375266645@qq.com
