导流墩对狭窄连续弯道枢纽船闸引航道口门区水流条件改善规律研究

On improvement laws of flow conditions at the entrance of ship approach channel in narrow continuous meandering river by diversion pier

依托湘江土谷塘航电枢纽工程,采用整体水工模型试验,着重介绍利用导流墩改善狭窄连续弯道枢纽船闸下游引航道口门区通航水流条件的研究成果。根据试验观测到的数据和水流现象,分析导流墩不同平面布置形式,包括导流墩数量、导流墩间距以及导流墩布置角度对口门内斜流角度、横向流速及回流等水力参数的影响,总结导流墩平面布置形式对狭窄连续弯道枢纽船闸下游引航道口门区水流条件的改善规律。

Based on the Xiangjiang Tugutang hydro-junction project,we introduce the improvement measure of flow conditions at the entrance of lower approach channel in the narrow continuous meandering river by the diversion pier.According to the observed data and current phenomenon,we analyze the influences of arrangement types and layout angles of diversion piers on the hydraulic parameters such as the angle of inclined flow at the entrance area,transverse velocity and reflux,etc.,and summarize the improvement laws of flow conditions at the entrance of lower approach channel in the narrow continuous meandering river by the diversion pier.