米岔沟水库工程拦河闸坝设计

Design of Barrage for the Michagou Reservoir Project

米岔沟沟道比降大,洪峰流量大、历时短、流速急、河道行洪时携带大量泥沙和漂浮物,径流主要由降雨和潜水补给,具有年际变化较大、年内分配不均匀等特点。通过对米岔沟水库拦河闸坝设计分析,介绍了小型闸坝设计思路及设计要点分析,为其他类似沟道小型拦河闸坝的设计提供参考。

Michagou gully is featured by a high gradient,a large peak discharge with short duration and rapid flow rate,and a large amount of sediment and floating materials when the river channel is flooded.Runoff of the gully is mainly supplied by rainfall and phreatic water,which is featured with large inter-annual fluctuations and intra-annual uneven distribution.Through the analysis of the design of the Michagou Reservoir Barrage Dam,the ideas and key points of the design for small-scale dams are introduced,which provides a reference for the design of barrage for other similar gullies.