环境水对大黑汀坝基防渗帷幕侵蚀的研究

大黑汀水库大坝廊道于１９８９年发现在排水孔及排水沟内有大量的乳白色絮状物和黑色、红褐色沉积物，经对１７组排水孔及钻孔进行水质分析，得出以下结论：在１３个坝段中，环境水对其中Ｆ１、１０、１４、２０、２８号坝段护坦的坝基帷幕存在着中等程度的溶出性侵蚀。

Study on Daheiting Dam foundation impevious curtain eroded by environmental water

A lot of milky floc and black,maroon deposit was found in the drain holes and drain ditches of Daheiting Dam's drainage gallery in 1989.Through a overall analysis of water quality for 17 teams of drain holes and bore holes,a conclusion that environmental water has some middle level of dissolved solutions in F1,No.14,10,20,28 dam sections' apron dam foundation impervious curtain has been achieved.