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1 渡槽工程概况郝湾渡槽始建于70年代末80年代初,工程位于伊川县白沙乡郝湾村东,是东一干渠跨越白降河的重要输水建筑物。该渡槽总长752m,设计流量50m~3/s,单波双曲拱及排架支撑,矩形槽身,渡槽伸缩缝止水采用双侧木板内填胶泥防漏。经20多年的运行使用,在暴晒、冻融及外力作用下,伸缩缝止水胶泥裂缝变形、漏水,117条伸缩缝中96条都有不同程度的漏水,具体漏水情况及原因如下:①漏水位置多在侧墙下部1.5m范围,多数是因止水材料与昆凝土槽身结合部有裂隙,漏水部位
1 Aqueduct Overview The aqueduct aqueduct was first built in the late 1970s and early 1980s. The project is located in the east of Haowan Village, Baisha Township, Yichuan County. It is an important water conveyance structure that crosses the Baihe River. The aqueduct has a total length of 752m and design flow of 50m ~ 3 / s. The single-wave double-curved arch and the berth support, the rectangular aqueduct and the aqueduct expansion joints are sealed with water and sealed with double-sided wood to prevent leakage. After more than 20 years of operation, under the action of exposure, freezing and thawing, and external force, the cracks of the expansion joint sealing mortar cracked and leaking, and 96 of the 117 expansion joints all had different degrees of leakage. The specific leakage and the reasons are as follows: Position more in the lower 1.5m sidewall area, mostly because of water-stop materials and Kun Kun body joints with cracks, leakage parts