李钦荣

（安徽省长江河道管理局，安徽 芜湖241000）

　　摘要：在汛期前后长江河道河势会发生较大的变化，河道易发生崩岸险情和河床淤积，河道管理部门为关注河道变化，必须对河道进行监测。传统河道监测采用单波束测量方式，测深精度和效率都较低。为更好地对河道进行管理，安徽省长江河道管理局采用多波束测深系统对长江河道进行监测，快捷采集大面积、高精度水下点云数据，对河道水下地形作全覆盖、无遗漏的扫测，方便在CAD中制作各种比例尺的水下地形图，对水下地形数据在GIS软件中进行三维建模，制作固定断面图和冲淤分析图，进行断面对比和冲淤分析。通过监测为河道管理提供大量的基础资料，分析结果能全面反映河道变化规律和趋势，提高河道管理的技术和水平。

　　关键词：多波束测深系统 河道监测 冲淤分析 护岸监测

Application of multi-beam bathymetric system in Yangtze River channel monitoring

Li Qinrong

(Yangtze River Administration Bureau of Anhui Province, Wuhu 241000, China)

　　Abstract: Before and after the flood season, the river regime of the Yangtze River will undergo major changes, and the river is prone to bank collapse and river bed siltation. In order to get information about the changes of the riverway, river management department must monitor the riverway. Single beam measurement method is used for traditional river monitoring, which has low sounding precision and efficiency. In order to better manage the riverway, a multi-beam bathymetric system is used by Yangtze River Administration Bureau of Anhui Province to monitor the Yangtze River channels. The system can quickly collect large-area and high-precision underwater plot cloud data, exhaustively side-scan underwater topography of the channel, make various scales of underwater topographic maps in CAD, make 3D modeling of underwater topographic data in GIS software, make fixed section map , make scouring and silting analysis map, compare cross sections and analyze erosion and deposition. Through monitoring, a large amount of basic information is provided for riverway management. The analysis results can fully reflect the law and trend of riverway changes, which can improve the technology and level of riverway management.

　　Key words: multi-beam bathymetric system , riverway monitoring, erosion and deposition analysis, revetment monitoring