| 摘要: |
| 以五里亭船闸下游引航道整治措施为例，建立了二维水流数学模型，对岸嘴开挖、隔流墙设置、疏浚、航线调整等措施进行研究，详细阐述了典型引航道水流条件的逐步优选过程，提出了五里亭船闸下游引航道推荐整治方案。通过对方案的逐步优选，得出：①引航道整治措施优选是多约束条件下的渐进过程，除论证通航可行性外应兼顾发电、行洪可行性，孤立分析通航整治措施可能给出极不合理的工程建议，而这在许多通航论证中常被忽视；②对于具体工程，引航道隔流墙的长度理论上存在最优值；③淹没式长隔流导航墙可满足掩护引航道水流条件的要求，同时也不妨碍电站出力和河道泄洪，是通航水流条件较差船闸引航道整治的有效措施。 |
| 关键词: 整治措施 通航条件 引航道 水动力模型 |
| DOI： |
| 分类号:U641.2 |
| 基金项目:国家自然科学基金资助项目（51409173）；交通运输部科技项目“西江航电枢纽利用船闸通闸泄水进行引航道清淤的技术研究”（20113287461680） |
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| Comprehensive regulation of navigation conditions of lower approach channel of Wuliting navigation lock |
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WANG Xiaogang, WANG Xiaodong, XUAN Guoxiang, YAN Jun
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State Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering, Nanjing Hydraulic Research Institute, Nanjing
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| Abstract: |
| Taking the lower approach channel of the Wuliting navigation lock as a case history. A two-dimensional hydrodynamic model is developed to study regulation measures, such as riverbank excavation, construction of the guild walls, dredging and adjustment of waterway regulation. The gradual optimization of water flow conditions of the typical approach channel is expounded in detail, and the recommended regulation schemes for the downstream approach channel of the Wuliting navigation lock are proposed based on the analyses above. Through the gradual optimization of the schemes, the main conclusions are as follows: ①The optimization process of the comprehensive channel regulations is a gradual process under multi constraints. Both the feasibilities of hydropower generation and flood propagation should be considered before the regulation measures of navigation are adopted, which is usually ignored; ②There should be an optimal length of the guild walls for certain approach channels; ③The construction of a long submerged guild wall is suggested, not only appropriate for the navigation conditions but also for the hydropower generation and flood carrying capacity. It is an effective measure to remedy the poor navigational flow in approach channels of the navigation locks. |
| Key words: regulation measures navigation conditions approach channel hydrodynamic model |
