陈村大坝坝基帷幕防渗效果分析及疑点解析  

Analysis of Foundation Seepage of Chencun Dam

作　　者：赖道平[1] 顾冲时[1] 郑东健[1] 

机构地区：[1]河海大学水利水电工程学院,江苏南京210098

出　　处：《水利水电技术》2003年第11期37-39,共3页Water Resources and Hydropower Engineering

基　　金：国家自然科学基金重点项目(50139030)

摘　　要：陈村大坝坝基地质条件复杂,对坝基帷幕进行了多次灌浆补强。通过坝基渗流实测资料定性定量分析,评价坝基帷幕的补强和防渗效果,并解析左岸坝块靠下游扬压力孔水位比靠上游扬压力孔水位高等现象的物理成因。分析表明,坝基帷幕具有较好的防渗效果,帷幕的稳定性和耐久性良好,但应加强个别测孔孔水位的观测;左岸坝块靠下游孔水位比靠上游孔水位高是裂隙渗流引起的。The geological condition of Chencun Dam foundation is complicated, and the curtain of foundation has been grouted a few times. Based on the qualitative and quantitative analysis of observed data, the effect of the anti-seepage curtain is evaluated. And the physical reason resulting in the phenomenon such that, in the left dam blocks, the water levels in the downstream uplift holes are higher than that of upstream holes, is analyzed. It can be drawn that the effect of the anti-seepage curtain is well, and the curtain possess good stability and durability. However, it is suggested keeping on monitoring the variation of the uplift levels in a few holes. And crevice seepage results that water levels in the downstream uplift holes are higher than that of upstream holes.

关 键 词：陈村大坝 坝基 帷幕 防渗效果 多次灌浆补强 渗流 

分 类 号：TV698.233[水利工程—水利水电工程]