荆江典型碍航河段航道整治工程对三峡蓄水适应性分析

发布时间：2018-04-12 19:24

本文选题：整治建筑 + 三峡　；参考：《水力发电学报》2017年01期

【摘要】：针对三峡蓄水过程中的荆江典型碍航河段,研究了航道整治工程对蓄水过程的适应性及工程效果。通过实测水沙、地形资料,分析了三峡蓄水后荆江河段河床冲淤规律及航道条件变化,以窑监河段为研究对象,采用二维水沙数学模型模拟了守护型工程和调整型工程对于汛后蓄水过程的适应性。结果表明:在三峡水库蓄水后"清水冲刷"的前提条件下,守护型工程对改善航道效果有着积极作用,但需满足一定条件,主要是浅水道处于较好的演变阶段,并且整治目标与现状条件差距不大;而对三峡水库汛后蓄水过程较为敏感的河段,彻底改善或提高航道条件,需采用一定的调整型整治工程。研究成果可供三峡工程坝下河段航道整治研究等参考。
[Abstract]:Aiming at the typical obstructing reach of Jingjiang River in the process of water storage in the three Gorges, the adaptability and engineering effect of waterway regulation project to the process of water storage are studied.Based on the measured water and sediment and topographic data, the rules of river bed scouring and silting and the changes of channel conditions in the Jingjiang reach after the three Gorges impoundment are analyzed.The adaptability of daemons and adjustment projects to the process of water storage after flood is simulated by using two dimensional water and sediment mathematical model.The results show that, under the precondition of "clear water scour" after the three Gorges Reservoir impoundment, the daemon project plays a positive role in improving the waterway effect, but it needs to meet certain conditions, mainly that the shallow water channel is in a better stage of evolution.And the target of regulation is not far from the present condition, and the river section which is more sensitive to the storage process after flood of three Gorges Reservoir needs to adopt certain adjustment regulation project to improve or improve the waterway condition thoroughly.The research results can be used as reference for channel regulation under the dam of the three Gorges Project.
【作者单位】：天津大学水利工程仿真与安全国家重点实验室;交通运输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;
【基金】：国家自然科学基金(51209112;51579123) 天津市自然科学基金(13JCQNJC07800;15JCYBJC21900;15JCQNJC07900)
【分类号】：U617

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