文章以独流减河防潮闸周边地形测绘为例,介绍了三维激光扫描仪的数据采集和处理方法,获得了DEM数据和防潮闸三维模型等成果,并对三维激光扫描仪在水文应急监测中的应用进行了探讨。 This paper takes the surveying and mapping of the periphery of Dasha River floodgate as an example, introduces the data acquisition and processing methods of the 3D laser scanner, obtains the DEM data and the 3D model of the floodgate and so on. And in the emergency monitoring of the hydrology The application is discussed.