某深厚覆盖层闸坝渗流变形耦合模拟方法与应用  

Coupling Simulation Method and Application for Seepage Deformation of Gate Dam on Deep Overburden

作　　者：吴梦喜[1,2] 宋世雄 房彬 张浩然 WU Meng-xi;SONG Shi-xiong;FANG Bin;ZHANG Hao-ran(Institute of Mechanics,Chinese Academy of Sciences,Beijing 100190,China;University of Chinese Academy of Sciences,Beijing 100049,China;PowerChina Guiyang Engineering Corporation Limited,Guiyang 550081,China)

机构地区：[1]中国科学院力学研究所,北京100190 [2]中国科学院大学,北京100049 [3]中国电建集团贵阳勘测设计研究院有限公司,贵州贵阳550081

出　　处：《水电能源科学》2023年第7期113-117,共5页Water Resources and Power

摘　　要：鉴于深厚覆盖层上闸坝的坝基开挖、闸浇筑和基坑内的水位变化对闸基和闸结构的位移均有显著影响,提出了大坝施工与运行全过程中渗流与变形耦合的有限元仿真方法,并将其应用于金沙江某闸坝的地基处理中。结果表明,闸填筑过程中,基坑地下水位升高3 m,能抵消约1 m高混凝土浇筑自重引起的坝基沉降,地下水位变化对闸坝施工期位移增量有显著影响,实现了施工与运行全过程中闸坝的渗流与变形的耦合仿真,支撑了坝基处理工程设计。The excavation of the foundation,the process of dam construction and the water level variation in foundation have significant effects on the displacement of the foundation and structure of a sluice dam on deep overburden.A finite element simulation method for the coupling of seepage and deformation during the whole process of the dam construction and operation was proposed to treat the foundation of a dam in Jinsha River.The results show that the foundation settlement caused by the dead weight of the filled concrete body of about 1 m height can be offset by 3 m height groundwater level rising in the foundation during the sluice construction.The change of groundwater level has a significant impact on the displacement increment of sluice dam during the construction period.The coupling simulation of seepage and deformation of the sluice dam in the whole construction and operation process was realized,which has supported the engineering design of the dam foundation treatment.

关 键 词：有限元法 水闸 覆盖层 渗流 变形 

分 类 号：TV698.233[水利工程—水利水电工程] TU43[建筑科学—岩土工程]