摘要： 随着城市供水发展，引水工程功能的变化，对输水渡槽伸缩缝止水结构要求提高，水工建筑物的运行维护技术要求也变得更加复杂，为了满足供水功能变化，必须对伸缩缝的止水系统进行改造。

Abstract: As development of urban water supply, accordingly, the requirements for aqueduct are heightened and maintenance of the hydro structures is more complex. Thus, treatment of expansion joints at Zhaoshandu aqueduct was carried out, which was introduced in this paper.