岷江下游中枯水碍航浅急滩段航道整治方案  

Channel regulation scheme for navigation-obstructing shallow and rapid beaches during normal water level and dry seasons in downstream of Minjiang River

作　　者：李顺超 邓涯 何熙 谢玉杰 马爱兴[2,3] 何修伟 胡颖[2,3] LI Shun-chao;DENG Ya;HE Xi;XIE Yu-jie;MA Ai-xing;HE Xiu-wei;HU Ying(Sichuan Communication Surveying&Design Institute Co.,Ltd.,Chengdu 610017,China;State Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering,Nanjing Hydraulic Research Institute,Nanjing 210029,China;Key Laboratory of Port,Waterway&Sedimentation Engineering of the Ministry of Communications,Nanjing Hydraulic Research Institute,Nanjing 210029,China;Sichuan Minjiang Port Navigation Power Development Co.,Ltd.,Leshan 614000,China)

机构地区：[1]四川省交通勘察设计研究院有限公司,四川成都610017 [2]南京水利科学研究院,水文水资源与水利工程科学国家重点实验室,江苏南京210029 [3]南京水利科学研究院,港口航道泥沙工程交通行业重点实验室,江苏南京210029 [4]四川岷江港航电开发有限责任公司,四川乐山614000

出　　处：《水运工程》2022年第12期158-163,共6页Port & Waterway Engineering

基　　金：中央级公益性科研院所基本科研业务费专项(Y220011、Y221012、Y221013、Y222011);四川省科技计划项目(2022YFS0467)。

摘　　要：山区冲积性河流滩槽明显,连续弯道间易形成中枯水期碍航的浅、急滩。针对此类滩段整治中简单疏浚可能引起水流归槽而恶化的问题,以岷江新开河滩段Ⅲ级航道工程为例,建立全长约10 km的河工定床模型,对研究河段的河床演变规律与碍航特征、工程前水流特性和航道整治设计方案及优化措施的效果等进行分析,归纳总结出中枯水碍航浅急滩的整治思路和方案。结果表明,方案实施后航道纵向流速在3.5 m/s以下、水面比降小于2.45‰,满足航道治理要求。The channel and beach in the mountainous alluvial river are obvious,and shallow and rapid beaches are prone to occur in continuous curved reaches during normal water level and dry seasons.Simple channel dredging for such regulation projects,however,may lead to flow concentrating in channels with higher velocity.To solve the above mentioned problem,we take the third-level channel project of the Xinkaihe beach on Minjiang River as an example to build a fixed-bed physical model for a river of about 10 km.Then,we analyze the riverbed evolution laws,navigation obstruction characteristics,flow characteristics before regulation,and the effects of the channel-regulation design scheme and optimization measures.Moreover,we summarize the regulation principle and scheme of navigation-obstructing shallow and rapid beaches during normal water level and dry seasons.The results show that the longitudinal flow velocity in the channel is less than 3.5 m/s,and the water surface slope is below 2.45‰,which can meet the requirements of channel regulation.

关 键 词：岷江 浅急滩 航道整治 定床物理模型 

分 类 号：U617[交通运输工程—船舶及航道工程]