山区河流弯曲分汊型河段航道整治方案  

Channel regulation scheme of bending braided reaches in mountainous rivers

作　　者：李顺超 李欢 LI Shun-chao;LI Huan(Sichuan Communication Surveying&Design Institute Co.,Ltd.,Chengdu 610017,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

出　　处：《水运工程》2023年第S01期34-42,共9页Port & Waterway Engineering

基　　金：四川省科技计划项目(2022YFS0467)。

摘　　要：岷江下游沙卵石弯曲分汊河段较多,不同分汊河段的河势特征与碍航特征迥异,山区河流弯曲分汊型河段不同的航道整治措施将导致整治点位水文条件、底质组成和河道结构产生明显不同的变化,对航道整治点位通航功能的影响也有明显差异。采用1:100正态河工物理模型试验和自航船模试验相结合的技术手段,针对岷江下游霸王滩滩群弯曲分汊型航道整治措施进行研究,对山区河流弯曲分汊型河段航线选线、整治建筑物尺寸和间距等平面设计参数进行优化设计,提出岷江下游霸王滩群弯曲分汊型河段III级航道整治方案。结果表明,通过优化航线布置并结合坝体调整、复式航槽开挖、下游布设潜坝或填槽等工程措施,可以实现增加水深、改善水流条件的整治目的。There are many sandy pebble bending braided reaches of Minjiang River, and the river regime characteristics and navigation obstruction characteristics of different braided reaches are very different. Different channel regulation measures for bending braided reaches of mountainous rivers will lead to significantly different changes in hydrological conditions, sediment composition and channel structure at the regulation sites, and also have significant differences in the impact on the navigation function of channel regulation sites. Using the technical means of combining 1:100 normal river physical model test and self-propelled ship model test, this paper studies the regulation measures of Bawangtan group bending braided reaches of Minjiang River, optimizes the plane design parameters such as route selection, regulation building size and spacing in mountainous rivers bending braided reaches, and proposes the regulation scheme for class III channel of Bawangtan group bending braided reaches of Minjiang River. The results show that the regulation purpose of increasing water depth and improving water flow conditions can be achieved by optimizing the route layout and combining engineering measures such as dam body adjustment, excavation of compound navigation channel, and placement of submerged dam or filling channel at the downstream.

关 键 词：岷江 分汊型河流 航道整治 河工物理模型 

分 类 号：U612.32[交通运输工程—船舶及航道工程]