三峡库区变动回水区上段鱼洞水道中堆、窎鱼嘴疏浚方案  

Dredging scheme of Zhongdui and Diaoyuzui in Yudong waterway in upper section of fluctuating backwater area in Three Gorges Reservoir area

作　　者：邵伟峰 刘辛愉 王涛 苏丽 SHAO Weifeng;LIU Xinyu;WANG Tao;SU Li(Changjiang Chongqing Harbour 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》2023年第11期126-130,197,共6页Port & Waterway Engineering

摘　　要：三峡水库175 m试验性蓄水以来,在新水沙条件下变动回水区上段局部重点碍航浅滩持续存在卵砾石淤积碍航问题,对库尾河段航道条件产生不利影响,船舶通航安全存在一定隐患。自2020年汛期特大洪水以来,变动回水区上段鱼洞水道中堆、窎鱼嘴浅碛逐年淤长,以该段重点碍航滩险为背景,分析了重点碍航浅滩冲淤特点、碍航成因等,提出了针对性维护疏浚方案,并对疏浚后效果进行分析。从维护性疏浚完工后效果及河段航道条件来看,鱼洞水道中堆、窎鱼嘴重点碍航浅滩河段的航宽、水深、弯曲半径均得到一定改善,航道条件明显好转。Since the 175 m experimental impoundment of the Three Gorges Reservoir,the problem of pebble and gravel siltation has continued to exist in the local key obstruction shoal in the upper section of fluctuating backwater area under new water and sediment conditions,which has adversely affected the channel conditions of backwater surface profile and there are certain hidden dangers in the safety of ship navigation.Since the catastrophic flood season in 2020,the shallow moraine in Yudong waterway(Zhongdui Diaoyuzui)in the upper section of fluctuating backwater area has been silting up year by year.Based on the background of the key beach hazards in this section,this paper analyzes the characteristics of scouring and silting in key obstruction shoals and the causes of navigation obstruction,puts forward targeted maintenance and dredging schemes,and analyzes the dredging effect.From the perspective of the effect of maintenance dredging after completion and the channel conditions of the river section,the channel width,water depth and bending radius of the key obstruction shoal in Yudong waterway(Zhongdui Diaoyuzui)have been improved,and the channel conditions have improved significantly.

关 键 词：变动回水区上段 鱼洞水道 维护性疏浚 

分 类 号：U616[交通运输工程—船舶及航道工程]