竖井穿越高地下水砂层设计方案分析

Analysis on the Design Scheme of Shaft Traversing the Sand Layer with High Groundwater

通过对神木县城供水工程输水隧洞施工竖井穿越高地下水砂层的不同施工工艺分析后,最终采用了成熟技术井外冷冻法堵水设计方案,一举解决了特长深埋隧洞竖井穿越高地下水砂层的技术难题。

Through the analysis of construction technique of water conveyance tunnel traversing sand layer with high groundwater of Shenmu water supply project, the design scheme of frozen blocking water in well was adopted, which solved the problem of long water conveyance tunnel traversing sand layer with high groundwater.