黄河多泥沙桥区河段航道整治技术  

Channel regulation technology of river reach in sediment-laden bridge area of the Yellow River

作　　者：张国瑞 李顺超 刘泓江 晏建奇 ZHANG Guo-rui;LI Shun-chao;LIU Hong-jiang;YAN Jian-qi(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95-100,共6页Port & Waterway Engineering

摘　　要：黄河银川段为典型的游荡性平原河流,河床质为细沙,易冲易淤。涉水设施易引起沙质河床泥沙运动规律改变、河床地形发生不可预测的冲淤演变,水流流态紊乱,不利于船舶通过桥区河段,碍航滩险增多,整治难度加大。通过河床演变分析,借助数值模拟技术分析各代表流量下多泥沙桥区河段的水流流态和夹角、涉水建筑阻水率等参数,研究桥区河段的航道整治技术,兼顾对行洪影响,固化航槽,寻求航道整治和行洪等的平衡。结果表明,该航道整治技术使航道整治、行洪与桥梁建设相结合,既可以满足航道通航条件,也可以满足行洪要求,有利于船舶通航和桥梁建设。The Yinchuan reach of the Yellow River is a typical wandering plain river. Its bed material is fine sand, which is easy to be washed and silt. The wading facilities are prone to change the sediment movement law of the sandy riverbed, cause unpredictable scouring and silting evolution of the riverbed terrain, and result in the turbulence of the water flow pattern, which is not conducive to ships passing through the reach in the bridge area. As a result, it increases the risk of navigation obstacles and the difficulty of regulation. Based on the analysis of riverbed evolution, this paper uses numerical simulation technology to analyze the water flow pattern and included angle of the reach in the sediment-laden bridge area under representative flows, the water blocking rate of wading buildings, and other parameters. In addition, the paper studies the channel regulation technology of the reach in the bridge area, which considers not only its impact on flood discharge and channel solidification but also navigation channel regulation and flood discharge. The results show that this channel regulation technology has combined navigation channel regulation, flood discharge, and bridge construction, and it can not only satisfy the navigation conditions of the channel but also meet the flood discharge requirements, which is conducive to ship navigation and bridge construction.

关 键 词：沙质河床 桥区河段 航道整治 

分 类 号：U617[交通运输工程—船舶及航道工程]