水布垭水利枢纽岩溶体内防渗帷幕优化布置研究  

Study of Optimization Disposition of Anti-seepage Curtain in the Left Bank Karst Rock Mass of Shuibuya Hydro Project

作　　者：纪伟[1] 赵坚[1] 沈振中[1] 孙役 

机构地区：[1]河海大学水利水电工程学院,江苏南京210098 [2]清江水布垭工程建设公司,湖北443002

出　　处：《水电能源科学》2005年第1期36-39,共4页Water Resources and Power

摘　　要：水布垭水利枢纽坝址区岩溶化程度较高 ,结合其左岸防渗帷幕布置设计 ,针对岩溶介质中渗透水流的特点 ,建立了基于改进折算渗透系数法的岩溶渗流有限元数值计算分析模型。通过对不同防渗帷幕布置方案进行比较 ,较深入地分析了帷幕的长度和深度、岩溶管道以及岩层和帷幕的渗透性对渗流场的影响 ,提出了可节省 2 2 .5The degree of karstification in the dam site of Shuibuya hydro project is high, this article establishs finite element model of numerical calculation and analysis about karst seepage based on Improved Convert Permeability Coefficients Method, combining with its disposal of anti-seepage curtain in left bank and aiming at the seepage characteristics in karst media. The length and depth of curtain, karst conduit and the permeability of rock stratum and curtain, their influence to seepage area is deeply analyzed by comparing different disposals of anti-seepage curtain. An optimization disposal which may save 22.5 percent of anti-seepage curtain is proposed.

关 键 词：岩溶 渗流 帷幕 优化 

分 类 号：TV223.43[水利工程—水工结构工程]