江河湖库地理信息数据采集方法探讨—以湘江长沙段为试点河段

Discussion on Geographic Information Data Collection Methods of Rivers and Lakes—The Xiangjiang Changsha Section Is Used as the Experimental River Section

要全面贯彻落实《关于全面贯彻落实河长制的意见》提出的相关问题,有必要对我省水系水下地形和河流两岸的地理信息数据进行完善和更新。同时合理的水下地形及河流两岸的地理信息数据获取,可以为航道整治、管理,水运畅通,水库动态监测、流域智能决策系统等关乎民生的大事提供有力的数据支撑。本项工作内容是以湘江长沙段为试点河段,并对其进行水下地形测量和河道地理信息补充采集。在配合点云采集、调绘获得的水岸地形数据综合处理,获得水上水下综合地形图。利用相应软件,编辑处理水下地形数据,获得水下DEM。

To fully implement the related issues put forward by “views on the comprehensive implementation of the long river system”, it is necessary to improve and update the underwater topography of water system and the geographical information data of river banks. At the same time, reasonable data acquisition of underwater terrain and geographical information on river banks can provide powerful data support for major events related to people’s livelihood, such as waterway regulation and management, unimpeded water transport, reservoir dynamic monitoring and intelligent decision-making system of river basins. The Xiangjiang Changsha section is used as the Experimental river section. We also carry out underwater topographic survey and supplementary collection of river channel geographic information. The integrated processing of the coastal topography data and the integrated topographic map of overwater and underwater are obtained by combining with the data collection and mapping of point cloud. We also use the corresponding software to edit and process underwater topographic data to obtain underwater DEM.