摘要
经勘探发现,乌东德拱坝右岸抗力岩体中发育有K25大型溶洞.为了探究K25溶洞对坝肩边坡安全性的影响,分析比较两种工况下的总位移分布规律、竖向位移分布规律、顺河向位移分布规律、横河向位移分布规律、主应力分布规律、塑性区分布和安全系数,并评价溶洞的支护效果.研究结果显示两种工况条件下坝肩边坡的位移和应力相差不多,表明溶洞内部填充岩体质量良好.
It is found after prospecting that there are K25 large karst caves in the resistance rock mass on the right bank of Wudongde arch dam.In order to explore the influence of K25 karst cave on the safety of dam abutment slope,the total displacement distribution,vertical displacement distribution,along-river displacement distribution,cross-river displacement distribution,principal stress distribution,plastic zone distribution and safety factor under two working conditions are analyzed and compared,and the supporting effect of karst cave is evaluated accordingly.The results show that under the two working conditions,the displacement and stress of the abutment slope are similar,indicating that the quality of rock mass filled in the cave is good.
作者
唐浩
毕金锋
罗先启
张海涛
TANG Hao;BI Jinfeng;LUO Xianqi;ZHANG Haitao(School of Naval Architecture, Ocean & Civil Engineering,Shanghai Jiao Tong University,Shanghai 200240,China)
出处
《徐州工程学院学报（自然科学版）》
CAS
2022年第1期76-86,共11页
Journal of Xuzhou Institute of Technology(Natural Sciences Edition)
基金
国家大坝中心开放基金项目(CX2019B08)
国家重点研发计划项目(2016YFC0401908)。
关键词
溶洞
支护
位移
应力
数值模拟
karst cave
support
displacement
stress
numerical simulation
