基于鱼类分布与水力特性的鱼道进口布置方案比选

鱼道进口布置方式直接影响鱼道的诱鱼效果和过鱼效率。以临淮岗枢纽为例，通过构建二维宽浅河道水流流场数值模型，对典型工况下枢纽下游河道流场进行精细模拟，并结合河段鱼类分布的水声学调查结果，对3种不同鱼道进口布置方案进行比选。结果表明：临淮岗闸门下游左右岸流速满足鱼类适宜条件，且靠近鱼类聚集区域，均满足鱼道进口布置条件，可综合考虑经济效益、施工难度、工程安全性等确定布置方案，并建议相应调整闸门运行方案。

Comparison and selection of fishway entrance layout schemes based on fish distribution and hydraulic characteristics

The layout of fishway entrance directly affects the effect of fish inducing and the efficiency of fish passage. Taking the case of Linhuaigang hydro-junction, this paper presents a fine simulation of the downstream river flow field under typical conditions by constucting a two-dimensional numerical model of the flow field in wide and shallow rivers, and compares and studies three different layout schemes combining with the results of acoustic investigation of fish distribution in the reach. The results indicate that flow velocities on the left and right banks downstream of the sluice meet the suitability conditions for fish, and are close to the fish aggregation area, which meet the requirement for the arrangement of the fishway entrance. To determine the layout scheme, the economic benefits, construction difficulties and engineering safety should be considered, and the sluice gate operation scheme should be adjusted accordingly.