岩溶区水库防渗处理措施设计研究

Research and Design of Seepage Control Measures for Reservoirs in Karst Areas

德厚水库是一座建设于岩溶区的大型水利工程,工程区岩溶强烈发育,坝址区及库区管道~溶隙型岩溶渗漏问题突出。水库防渗工程线路长达4697m,设计帷幕总进尺26.86×104m,防渗总面积44.88×104m2,防渗工程量之巨居云南省乃至全国前列。为复核验证防渗边界、底界,探索适合的灌浆方法、灌浆压力,找到既经济合理、又质量可靠的帷幕灌浆工艺,工程自可研阶段起就循序渐进地开展了试验工作,积累了一定岩溶区灌浆技术经验。

Dehou reservoir is a large-scale water conservancy project constructed in karst region. The karst development in the engineering area is strong. The problem of karst leakage in dam site and reservoir area is prominent. The seepage control project of the reservoir is 4697 meters long. The design of anti-seepage curtain has a total length of 268,600 meters. The total area of seepage control is 448 thousand and 800 square meters. The huge amount of seepage control project is in the forefront of Yunnan province and even the whole country. In order to verify the anti-seepage boundary, check the bottom boundary, explore the grouting method and suitable pressure, and find a curtain grouting technology that is economical, reasonable and reliable. The project has carried out experimental work step by step since the research stage, and accumulated a certain amount of grouting technology experience in Karst areas.