房山水库土坝多头小直径水泥土防渗墙加固效果评价  

Reinforcement Effect Evaluation for Porous Small Diameter Soil-cement Anti-seepage Wall of Fangshan Reservoir Earth-rockfill Dam

作　　者：庄德利[1] 王宁[2] 沈振中[2,3] 聂柏松[2] 

机构地区：[1]东海县水务局,江苏连云港222300 [2]河海大学水文水资源与水利工程科学国家重点实验室,江苏南京210098 [3]河海大学水利水电学院,江苏南京210098

出　　处：《水电能源科学》2014年第4期125-128,共4页Water Resources and Power

基　　金：江苏省水利科技项目(2012071)

摘　　要：为评价多头小直径水泥土防渗墙的防渗效果,以房山水库土坝加固为例,采用有限元法计算分析加固前后坝体渗流特性。结果表明,以多头小直径水泥土防渗墙为主要防渗措施建立的防渗体系效果良好,可明显改善坝体和坝基的渗流性态,加固后大坝各料区渗透坡降和渗透流量均明显减小,均能满足《碾压式土石坝设计规范》的要求,且该方法施工质量可靠、造价低,可广泛推广应用于土坝防渗加固。Taking Fangshan reservoir earth rockfill dam for an example, porous small diameter soil cement anti seepage wall is adopted to evaluate the effect of seepage prevention. Finite element method is used to analyze the characteristics of the dam seepage before and after the reinforcement. The results show that the effect of the anti seepage system with porous small diameter soil cement anti seepage wall is good and the seepage condition of the dam body and foundation is demonstrably improved. After the reinforcement, the seepage slope of each partition and seepage discharge significantly reduced. The construction quality of this reinforcement approach is reliable and economical, which can be widely applied in earth rockfill dam reinforcement.

关 键 词：土石坝 多头小直径 水泥土防渗墙 防渗加固 效果评价 

分 类 号：TV233[水利工程]