不对称止水帷幕技术在临水明挖隧道工程的应用

Application of Asymmetric Water Stop Curtain Technology in Open Cut Tunnel Engineering

明挖沟槽一般按照最不利条件采用对称止水帷幕,可随着工程建设的发展,两侧水文地质条件相差较大的狭长沟槽工程越来越多,若这样狭长沟槽两侧按照不利条件考虑采用止水帷幕对称设计,会增加工期、浪费资源、增加成本,根据沟槽两侧不同的水文地质条件,区别设计明挖隧道沟槽两侧的止水帷幕,即采用止水帷幕不对称方案,使得工程止水方案更具有技术经济性。

Symmetrical waterproof curtain is usually used in open-cut trench according to the most unfavorable conditions.With the development of Engineering construction,more and more narrow and long trench projects with different hydrogeological conditions on both sides are built.If the symmetrical design of waterproof curtain is adopted on both sides of narrow and long trench in accordance with unfavorable conditions,the construction period,waste of resources and increase of production will be increased.In this paper,according to the different hydrogeological conditions on both sides of the groove,the waterproof curtain on both sides of the open-cut tunnel groove is designed differently.The asymmetric waterproof curtain scheme is adopted,which makes the waterproof scheme more technically and economically.