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引滦入津输水隧洞工程是引滦入 津跨流域输水工程的重要组成部分, 全长12.39km,其中洞挖隧洞9666m, 埋管段1714m。洞挖隧洞断面为圆拱直墙式结构,边墙高3.4m与上部直径5.7m的半圆拱相连,埋管采用宽5.7m的正方形。设计流量为60m3/s,洞底纵坡为1/2000,设计糙率为0.015。 引滦输水隧洞于1983年9月11日正式通水,至今已运行19年。在这19年中,虽然输水正常,但隧洞衬砌体混凝土普遍存在着不同程度的缺陷。经过多年的补强处理,边墙裂缝、麻
The Luanhe-Tianjin water transfer tunnel project is an important part of the water diversion project linking the Luan River to Tianjin and covers an area of 12.39km, of which 9666m is for digging tunnels and 1714m for buried pipelines. The tunnel digging tunnel section is a circular arch straight wall type structure, the height of the side wall is 3.4m and the semicircular arch with the upper diameter of 5.7m is connected, and the width of the buried pipe is 5.7m square. Design flow of 60m3 / s, cave longitudinal slope of 1/2000, the design roughness rate of 0.015. The Luanhe water diversion tunnel was officially opened on September 11, 1983 and has been in operation for 19 years. In 19 years, although the water is normal, but the tunnel lining concrete generally has varying degrees of defects. After years of reinforcement, wall cracks, Ma