水电站多管并列引水隧洞立交式检修通道设计

Design of overpass maintenance channel for multi-pipe paralleldiversion tunnel of hydropower station

文中在现有多管并列引水隧洞检修通道方案的基础上,提出了适用于多管并列引水隧洞的立交式检修通道方案。该方案中,检修通道由施工支洞改建而成,以立体交叉的方式跨越引水隧洞,与设置在检修通道内的检修井及支管共同构成引水隧洞的检修通道。该方案简单、经济、施工方便,能够为引水隧洞的检修提供良好的通行条件,可为相关工程的设计提供有益参考。

Based on the existing maintenance channel scheme of multi-pipe parallel diversion tunnel,an overpass maintenance channel scheme suitable for multi-pipe parallel diversion tunnel is proposed.In this scheme,the maintenance channel is reconstructed from the construction branch tunnel,and crosses the diversion tunnel in the way of three-dimensional intersection.The maintenance channel of the diversion tunnel is formed together with the manhole and branch pipe.The scheme is simple,economical and convenient for construction.It can provide good traffic conditions for the maintenance of diversion tunnel,and can provide useful reference for the design of related projects.