Abstract: Sediment concentration in total water release in Santunhe Reservoir is taken up high proporation, which make the tunnel seriously-abrased by the high speed and silt-laden flow. The reservoir has safely operated for 12 years since C60 siliceous concrete used to line water release tunnel in 1991 and the abrasion in the base of tunnel has become decreased.?

摘要： 三屯河水库全年放水量中含沙量较大，水库放水隧洞在挟沙高速水流作用下，底部磨蚀严重,在采用几种材料衬护后都无法达到设计与安全运行，1991年采用C60硅粉混凝土对放水隧洞进行衬护，通过12a的运行，隧洞底部磨蚀量较小，运行可靠，达到设计要求，给水库安全防洪、排砂运行，保证灌溉带来了良好的经济效益。