期刊名称：IOP Conference Series: Earth and Environmental Science
印刷版ISSN：1755-1307
电子版ISSN：1755-1315
出版年度：2018
卷号：153
期号：4
页码：042031
DOI：10.1088/1755-1315/153/4/042031
语种：English
出版社：IOP Publishing
摘要：The layout of fishway entrance has an important impact on the fish pass activity. In this paper, two kinds of arrangement forms are proposed by analyzing the fish pass objects and the time, the fishway type and the hub dispatching mode for Dayuandu Navigation & Hydropower Complex in Xiangjiang River. Based on the SMS-RMA2 model, a two-dimensional hydrodynamic numerical model with depth-averaged equations is established. The flow conditions at the inlet of different flow rates are calculated and the layouts of fishway entrance are compared and discussed. Meanwhile, the fish pass capacity of different cases is also discussed. The results show that the flow rate at the inlet for case 1 cannot usually meet the optimum flow rate requirment of 0.2m/s ~ 1.3m/s. However, the better results are found in case 2, the inlet flow velocity of this scheme can meet the requirements of the best fish flow rate under various working conditions, except the practical significance of the entrance cannot be showed. Subsequently, two optimization measures are given in this study to avoid the fish cannot find the entrance of fishway, which also provide some reference for similar projects especially the construction of fishway.
