船舶航行对河床底泥扰动影响的验证方法浅析  

Analysis on Verification Method of Influence of Ship Navigation on Riverbed Sediment Disturbance

作　　者：胡聪 张晔 曾宝庆 张坤军 HU Cong;ZHANG Ye;ZENG Baoqing;ZHANG Kunjun(Hangzhou Xihu District Urban Administration Bureau,Hangzhou 310000,Zhejiang,China;Hangzhou Urban Water Facility,River Protection and Management Center,Hangzhou 310003,Zhejiang,China;Zhejiang Institute of Hydraulics&Estuary(Zhejiang Institute of Marine Planning and Design),Hangzhou 310017,Zhejiang,China)

机构地区：[1]杭州市西湖区城市管理局,浙江杭州310000 [2]杭州市城市水设施和河道保护管理中心,浙江杭州310003 [3]浙江省水利河口研究院(浙江省海洋规划设计研究院),浙江杭州310017

出　　处：《浙江水利科技》2023年第1期49-52,共4页Zhejiang Hydrotechnics

摘　　要：在一定的水深条件下,船舶螺旋桨在航行过程中产生的射流会对河床底泥产生扰动影响,该扰动作用能否引起河床底泥的再悬浮有待进一步研究分析。以余杭塘河典型航段为研究对象,前期通过静力触探试验发现河床底泥状态较为稳定,在载重型船舶航行前、后的时间窗口,利用NORBIT iWBMS多波束测深系统对该航段进行跟踪测量。测量结果表明,在目前水深条件下,载重型船舶螺旋桨射流难以引起河床沉积底泥起动和再悬浮,初步可以判断船舶正常航行在该航道时对河床底泥影响不显著。Under certain water depth conditions,the jet generated by ship propeller during navigation will disturb the riverbed sediment.Whether the disturbance can cause the resuspension of riverbed sediment remains to be further studied and analyzed.This paper takes a typical section of Yuhangtang River as the research object.In the early stage,the static cone penetration test found that the state of riverbed sediment was relatively stable.The NORBIT iWBMS multibeam sounding system was used to track and measure the segment before and after the navigation of heavy ships.The measurement results show that,under the current water depth,the propeller jet of heavy ships is difficult to cause the start-up and resuspension of riverbed sediment.It can be preliminarily judged that the normal navigation of ships in this channel has no significant impact on the riverbed sediment.

关 键 词：多波束测深系统 载重型船舶 螺旋桨射流 余杭塘河 河床底泥 扰动 

分 类 号：TV148[水利工程—水力学及河流动力学]