深覆盖层上砂砾石坝渗流特性及防渗措施分析  

Seepage Characteristics and Control Measures of Sand Gravel Dam on Deep Over-burden Layer

作　　者：刘杰[1] 赵坚[1] 沈振中[1] 甘磊[1] 苗喆[2] 

机构地区：[1]河海大学水利水电学院,江苏南京210098 [2]中国水电顾问集团西北勘测设计研究院,陕西西安710065

出　　处：《水电能源科学》2011年第8期62-65,共4页Water Resources and Power

基　　金：河海大学水文水资源与水利工程科学国家重点实验室专项基金资助项目(2009586012);水利部公益性基金资助项目(200901070);国家自然科学基金资助重点项目(40930635)

摘　　要：以某水电站枢纽工程为例,构建三维渗流有限元模型,分析了各材料区渗透稳定性,通过不同防渗布置方案对比研究了厂坝址区渗流特性,并评价了各方案的可行性。结果表明,采用设计值方案,防渗墙和帷幕灌浆渗控作用很好,坝体和坝基各料区的渗透稳定性均符合要求,坝基渗控合理。Taking the hydro-junction project for an example, 3-D seepage FEM model is established and the seepage stability of various materials zone are analyzed. And then the seepage characteristics of dam site are studied by comparing different layout schemes of seepage prevention. Finally, the feasibility of various schemes is evaluated. The results show that the seepage prevention effects of cut-off wall and curtain grouting is very well for the design value scheme; the dam body and foundation areas meet the requirements of seepage stability; and the seepage control design of the dam founda- tion is reasonable.

关 键 词：深厚覆盖层 三维渗流有限元法 渗流场 渗透坡降 砂砾坝 

分 类 号：TV223.4[水利工程—水工结构工程]