三峡库区航道维护性疏浚技术方案分析  

Technical scheme of channel maintenance dredging in Three Gorges Reservoir area

作　　者：刘辛愉 苏丽 邵伟峰 王涛 LIU Xinyu;SU Li;SHAO Weifeng;WANG Tao(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9期187-192,共6页Port & Waterway Engineering

基　　金：三峡后续工作科研项目(SXHXGZ-2021-1)。

摘　　要：针对175 m试验性蓄水初期泥沙淤积碍航问题,结合实测水文、河道地形资料、2010—2022年度三峡库区航道维护性疏浚方案,对三峡库区近十年来的航道条件变化、滩险碍航成因及疏浚技术进行全面分析。结果表明:通过适当增加挖槽水深、“疏堵”结合等方法,可利于卵石输移、保持航道稳定,疏浚效果显著。在疏浚时机方面,有效结合三峡水库调度及疏浚滩险特点,合理安排施工时机,既提高施工效率,又可缓解施工与通航矛盾。Aiming at the problem of sediment deposition obstructing navigation in the initial stage of 175 m experimental impoundment,we make a comprehensive analysis of changes of channel conditions,causes of shoal navigation obstruction and dredging technology in the Three Gorges Reservoir area in the past ten years based on the measured hydrological and river terrain data,as well as the channel maintenance dredging scheme of the Three Gorges Reservoir area from 2010 to 2022.The results show that by properly increasing the water depth of the trench and combining dredging with blocking,it is beneficial to the transportation of pebbles,the stability of the channel and the remarkable dredging effect.From the perspective of dredging timing,the effective combination of the Three Gorges Reservoir scheduling and dredging beach risk characteristics,reasonable arrangement of construction timing,not only improve the construction efficiency,but also alleviate the contradiction between construction and navigation.

关 键 词：三峡库区 维护性疏浚 175 m试验性蓄水 

分 类 号：U616[交通运输工程—船舶及航道工程]