| 摘要: |
| 三溪口枢纽位于多湾河段连接处，引航道及口门区水流条件复杂，上游半开敞式引航道受枢纽泄流影响较大，下游引航道受下游45°弯道和小支流影响较大。通过枢纽整体水力学模型试验分析了引航道口门区的通航水流条件，并给出了优化布置方案。枢纽泄洪水库动水对上游引航道内水流干扰大，通过对比分析提出了保证通航安全的枢纽泄洪调度建议。通过合理疏浚河道凸岸滩地，并适当调整引航道布置长度和角度，有效地改善了下游引航道口门区的通航水流条件。 |
| 关键词: 三溪口枢纽 弯道凸岸 引航道 口门区 通航水流条件 |
| DOI： |
| 分类号:U641.2+11 |
| 基金项目: |
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| Optimal experiments of layout of an approach channel for Sanxikou navigable power project |
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LI Yan-fu
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State Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering, Key Laboratory of Navigation Structures, Key Laboratory of Water Science and Engineering of Ministry of Water Resources, Nanjing Hydraulic Research Institute
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| Abstract: |
| Sanxikou navigable power project is located at the river junction of two river bends. The flow pattern along the entrance area of the upper approach channel is disturbed by the dynamic water in the reservoir near the curved or braided reaches, and the river bend and the inflow of a small tributary disturb the flow pattern in the entrance area of the lower approach channel. In this study, the navigable flow conditions in the approach channel and its entrance area have been analyzed through the hydraulic model tests. Based on the contrastive analysis of experiment results, suggestions for the flood release of the navigable power project for safe navigation are made. Reasonably dredging the convex bank along the channel and regulating the length and angle of the approach channel can effectively improve the navigable flow conditions at the entrance area of the lower approach channel of Sanxikou navigable power project. The optimized management and measures to improve the shipping problems of the lower approach channel are given. These research results have important reference values for the similar projects in the future. |
| Key words: Sanxikou navigable power project meandering river channel approach channel entrance area of approach channel navigation condition |
