隔河岩水利枢纽基础渗流控制

隔河岩坝址基岩具有层状透水，顺河向延伸的断裂构造及岩溶发育，建基岩体透水性不均一，石牌组页岩是可靠的隔水岩层等特性。基岩渗流控制采用由防渗灌浆主帷幕，主排水，坝基辅助排水，两岸山体排水及消力池护坦周边封闭灌浆帷幕，封闭排水等组成的工程布置形式。

Seepage Control for Geheyan Project Foundation

This paper briefs the seepage charateristics of Geheyan project foundation with carst rockmass, seepage control enginating layout and implementation. Through comparison with several approaches, a foundation seepage control engineering has been optimized and developed. It includes a main curtain and drainage system, auxilary foundation drainage, a drainage system at dam-bankst rockmass, and a perimeter grouting curtain along dissipation poll.