某面板堆石坝施工及运行期渗流特性仿真研究  

Simulation Study on Seepage Characteristics of a Face Rockfill Dam during Construction and Operation

作　　者：吴俊衡 马富强 李海波 WU Jun-heng;MA Fu-qiang;LI Hai-bo(GuizhouWater Resources and Hydropower Survey Design and Research Institute Co.Ltd.,Guiyang 550002,China)

机构地区：[1]贵州省水利水电勘测设计研究院有限公司,贵阳550002

出　　处：《水利科技与经济》2023年第11期1-6,共6页Water Conservancy Science and Technology and Economy

基　　金：贵州省水利科技项目(KT201808);贵州省科技计划课题(黔科合重大专项字[2017]3005-2号)。

摘　　要：结合ABAQUS大型有限元渗流分析软件,以我国西南方某混凝土面板堆石坝实际工程为例,建立三维有限元渗流场,对比分析面板、垫层、防渗帷幕等防渗措施在不同工况下的渗流量、渗透坡降、水头分布以及孔隙压力情况。结果表明,本工程设计的渗流控制措施防渗效果明显,逸出点有较明显的降低,且渗透坡降、渗流量均满足抗渗稳定要求。但在无面板防渗措施下,垫层渗透系数较大,不满足渗流稳定要求,对坝体安全稳定造成较大威胁,并提出修改或优化建议。研究成果可为类似工程提供参考与借鉴。Combining with the large finite element seepage analysis of ABAQUS software,a concrete face rockfill dam in China's southwest actual project as an example,established the three-dimensional finite element seepage field,the contrast analysis of the panel,bedding,curtain infiltration seepage control measures in different working conditions,such as flow rate,seepage slope,water head distribution and pore pressure of different circumstances.The results show that the engineering design of seepage control measures of seepage control effect is obvious,escape point had a significantly lower,and the seepage slope,seepage flow can satisfy the requirements of seepage stability.But under no seepage control measures,the permeability coefficient of cushion layer is large,which does not meet the requirements of seepage stability and poses a great threat to the safety and stability of the dam body,and Suggestions for modification or optimization are put forward.The research results can be used as reference for similar projects.

关 键 词：面板堆石坝 渗流 有限元分析 渗透坡降 

分 类 号：TV641.4[水利工程—水利水电工程]