李欽榮

（安徽省長江河道管理局，安徽 蕪湖241000）

　　摘要：在汛期前后長江河道河勢會發生較大的變化，河道易發生崩岸險情和河床淤積，河道管理部門為關注河道變化，必須對河道進行監測。傳統河道監測采用單波束測量方式，測深精度和效率都較低。為更好地對河道進行管理，安徽省長江河道管理局采用多波束測深系統對長江河道進行監測，快捷采集大面積、高精度水下點云數據，對河道水下地形作全覆蓋、無遺漏的掃測，方便在CAD中制作各種比例尺的水下地形圖，對水下地形數據在GIS軟件中進行三維建模，制作固定斷面圖和沖淤分析圖，進行斷面對比和沖淤分析。通過監測為河道管理提供大量的基礎資料，分析結果能全面反映河道變化規律和趨勢，提高河道管理的技術和水平。

　　關鍵詞：多波束測深系統 河道監測 沖淤分析 護岸監測

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