土石坝防渗体及排水设施设计与应用

The Design and Application of Impervious Body and Drainage Facility of Earth-Rock Dam

为防止土石坝出现渗流破坏,文章总结土石坝防渗技术选择的原则,分析水平防渗技术和垂直防渗技术在土石坝防渗中的应用要点。同时,以第四拦洪库提升改造工程的0+700~2+684段土石坝为研究对象,对比棱体排水、贴坡排水、水平褥垫排水等排水设施的设计方案,并选择贴坡排水用于坝体排水,研究成果可为土石坝防渗和排水提供借鉴。

In order to prevent seepage failure of earthrock dam,this paper summarizes the principles of antiseepage technology selection of earth-rock dam,and analyzes the key application points of horizontal antiseepage technology and vertical anti-seepage technology in seepage prevention of earth-rock dam.At the same time,taking the 0+700-2+684 section earth-rock dam of the fourth flood detention reservoir upgrading engineering as the research object,the design schemes of drainage facilities such as prism drainage,slope drainage and horizontal blanket drainage are compared,and slope drainage is selected for dam drainage.The research results can provide reference for seepage prevention and drainage of earth-rock dams.