2022—2023年度特殊水情下三峡库区航道条件分析  

Channel conditions in Three Gorges Reservoir area under special hydrological conditions from 2022 to 2023

作　　者：刘辛愉 苏丽 邵伟峰 朱俊凤 LIU Xinyu;SU Li;SHAO Weifeng;ZHU Junfeng(Changjiang Chongqing Harbor and Waterway Engineering Investigation and Design Institute,Chongqing 401147,China)

机构地区：[1]长江重庆航运工程勘察设计院,重庆401147

出　　处：《水运工程》2024年第11期160-166,共7页Port & Waterway Engineering

基　　金：交通部三峡后续工作科研项目(SXHXGZ-2021-1)。

摘　　要：针对2022年汛期长江流域罕见的“汛期反枯”现象,基于实测水沙资料及三峡水库变动回水区水位观测资料,结合三峡坝前水位以及向家坝下泄流量资料,进行2022—2023年度三峡库区航道条件特性分析。结果表明:2022年汛期至2023年汛期三峡坝前长时间持续较低水位(155~160 m),向家坝增大下泄流量期间,变动回水区实际航道维护水深大于计划水深,而减小下泄流量期间,水深随之减小,甚至出现了达不到计划维护尺度的情况。建议深入开展枯水期流域水工程联合调度研究工作,根据实时水雨情信息及三峡调度情况,在三峡坝前水位较低时(160 m以下),科学精细化流域水工程联合调度,进一步充分发挥水利工程应对流域旱情的航道效益。In view of the rare phenomenon of“anti-dry in flood season”in the Yangtze River Basin during the flood season of 2022,based on the measured water and sediment data and the water level observation data of the fluctuating backwater area of the Three Gorges Reservoir,combined with the water level in front of the Three Gorges Dam and the discharge data of Xiangjiaba,the characteristics of the channel conditions in the Three Gorges Reservoir area from 2022 to 2023 are analyzed.The results show that the water level in front of the Three Gorges Dam continues to be low(155-160 m)for a long time from the flood season of 2022 to the flood season of 2023.During the period of increasing the discharge of Xiangjiaba,the actual channel maintenance depth in the fluctuating backwater area is greater than the planned water depth,and the water depth decreases during the period of reducing the discharge.There are even cases where the planned maintenance scale is not reached.It is suggested to carry out in-depth research on the joint operation of river basin water projects in dry season.According to the real-time water and rainfall information and the operation of the Three Gorges Reservoir,when the water level in front of the Three Gorges Dam is low(below 160 m),the joint operation of river basin water projects should be scientifically refined to further give full play to the channel benefits of water conservancy projects to cope with the drought in the river basin.

关 键 词：三峡库区 特殊水情 航道条件 

分 类 号：U61[交通运输工程—船舶及航道工程] TV145[交通运输工程—船舶与海洋工程]