迷宫堰在仕源水库加固中的应用

Application of labyrinth weir in strengthening Shiyuan Reservoir

迷宫堰是在平面上按齿状折线形布设的薄壁堰,它的溢流前沿宽度比直线形堰长几倍,在较低水头时具有较大的过流能力,适宜于溢流宽度受限而需加大下泄能力的溢洪道改造工程.仕源水库原溢洪道为有闸宽顶堰控制,对于小型水库,给管理带来了极大的不便,现将其改建为无闸控制迷宫堰,在经济、高效、便于管理等方面取得显著效果.

The labyrinth weir is a thin-plate weir which is layed by tooth and broken line in a plane, h width of the overflow edge is several times as much as straight line weir. And it has larger overflow capacity in lower water head. It is suitable for the spillway regulation projeet whose overflow width is limited and whose discharge capacity increases. The old spillway of Shiywuan Reserw,ir is controlled by the gated broad-crested weir. It＇s replaced by labyrinth weir with no gate, the effect is remarkal）le in eeomomie, effieney and management.