青云山隧道一号斜井反坡排水优化施工研究

Construction Optimization Research on Reverse Slope Drainage of Qingyunshan Tunnel No.1 Inclined Shaft

长大隧道大多穿越断层破碎带,很多属于强富水段,此时反坡排水就成为关键技术。以青云山隧道一号斜井为研究对象,根据现场地形标高等实际情况,对一号斜井反坡排水方案进行优化,将反坡排水变为顺坡排水,确保了隧道通过富水段及涌水时的施工安全,提高了施工进度,节约了施工成本,可为类似隧道的施工提供一种新的思路和方法。

Most of the long tunnels passes through the fault fracture zone,a lot of zones are in strong water-rich section.At this point,the reverse slope drainage becomes the key technology.Taking No.1 inclined shaft of Qingyunshan Tunnel as the research object,according to the actual situations such as the elevation of site topography,the reverse slope drainage scheme is optimized and the reverse slope drainage is changed into positive slope drainage.Through the above approaches,it can ensure the construction safety of tunnel passing through water-rich section and gushing water,construction schedule greatly improved is and the construction cost is saved.It could provide a new way of thinking and methods for the construction of similar tunnels.