| 龙滩枢纽下游桥区航道整治研究 |
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| 引用本文： | 韦巨球,刘新,赵家强.龙滩枢纽下游桥区航道整治研究[J].水道港口,2008,29(6). |
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| 作者姓名： | 韦巨球 刘新 赵家强 |
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| 作者单位： | 1. 广西壮族自治区港航管理局,南宁,530012
2. 交通部天津水运工程科学研究所,工程泥沙交通行业重点实验室,天津,300456 |
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| 摘 要： | 龙滩大桥桥区主槽两岸石质边滩岸线极不规则,中枯水主槽狭窄,航道尺度不足;同时受地形影响,龙滩枢纽下泄流量较大时,桥区水流湍急、流态紊乱,大桥主通航孔前主流与桥轴线夹角很大,碍航严重。资料分析和平面二维水流数学模型研究表明,通过新辟航槽、开槽分流、调直航线,可以解决桥区航线弯曲、横向流速过大及不良流态问题,为类似桥区航道整治提供参考。
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| 关 键 词： | 通航水流条件 航道整治 流向调整 龙滩枢纽 |
Study on channel regulation of bridge area in Iower reaches of Longtan hydropower station |
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| WEI Ju-qiu,LIU Xin,ZHAO Jia-qiang.Study on channel regulation of bridge area in Iower reaches of Longtan hydropower station[J].Journal of Waterway and Harbour,2008,29(6). |
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| Authors: | WEI Ju-qiu LIU Xin ZHAO Jia-qiang |
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| Institution: | WEI Ju-qiu1,LIU Xin2,ZHAO Jia-qiang2 |
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| Abstract: | The shoreline of the main channel in Longtan bridge area is very irregular,so the main channel in medium and low water periods is narrow.The dimension of the waterway can not meet the requirements.When the discharge volume of Longtan junction is large,the river flows rapidly,and the flow pattern is turbulent.The angle between main flow and axis of the bridge is extremely large.The obstruction to navigation created then by all these factors.Based on data analysis and the two-dimensional flow mathematical model,the problems such as channel bending,high lateral velocity of flow and turbulent flow can be solved by digging new channel in front of the bridge,dividing channels and straightening the flow direction.It also offers experience for similar projects. |
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| Keywords: | navigable flow condition channel regulation flow direction adjustment Longtan hydropower station |
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