汛期反枯水情下长江上游航道养护对策
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Maintenance countermeasures in upper reaches of the Yangtze River under flood season drought
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    摘要:

    采用实测资料分析了长江上游近年的水沙条件变化,认为2022年汛期反枯水情将给航道养护工作带来不利影响。通过总结近年的航道养护疏浚实践,提出了长江上游航道养护疏浚工作主要存在重点浅滩不利演变趋势加剧、碍航浅滩数量增加、碍航时间和维护疏浚时机高度集中、疏浚组织难度大等问题。为应对可能出现的不利水文条件下多水道集中出浅问题,提出加强中长期水情预测预报、对重点浅滩进行精准设计、采取将航道养护疏浚和整治建筑物维修相结合的综合养护方式,可为航道养护和航道治理提供参考。

    Abstract:

    We analyze the changes in water and sediment conditions in the upper reaches of the Yangtze River in recent years based on the measured data.It is concluded that the flood season drought of 2022 can have adverse effects on waterway maintenance.By summarizing the practice of waterway maintenance and dredging in recent years,we point out that waterway maintenance in the upper reaches of the Yangtze River mainly has the following problems.The adverse evolution trend of key shoals is getting worse;the number of shoals obstructing navigation is increasing;the time of obstructing navigation and the timing for maintenance and dredging are highly concentrated;the organization for maintenance and dredging is difficult.To deal with the problem of concentrated shallowing in multiple channels under possible adverse hydrological conditions,we propose to strengthen the medium and long-term water regime forecasting,carry out the accurate design of key shoals,and adopt a comprehensive maintenance mode that combines waterway maintenance and dredging with the maintenance of waterway regulation structures,which can provide a reference for future waterway maintenance and regulation.

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张 璠.汛期反枯水情下长江上游航道养护对策[J].水运工程,2023(8):157-162.

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  • 在线发布日期: 2023-08-15
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