无人机机载LIDAR在地质灾害数据采集中的应用研究——以金沙江白格堰塞湖应急处置旧址科学考察为例

Research on Application of UAV Airborne LIDAR in Geological Hazard Data Acquisition:Taking the Scientific Investigation of the Emergency Response Site in Baige Barrier Lake on Jinsha River as an Example

我国是地质灾害频发国家,地质灾害发生后,快速确定灾害情况,为指挥部提供数据支撑,是应急救援工作的重要任务。无人机载LIDAR由于其轻便、快速、穿透性等优势,在野外测绘领域得到了广泛应用,尤其是近年来仿地飞行新型飞行模式的结合,极大地提高了采集数据的精度。本文通过仿地飞行模式下的无人机载LIDAR对白格堰塞湖旧址进行了探索性的现场测量作业,通过数据处理分析,不仅精确得到了堰塞湖疏通后现有地形地貌信息,同时结合堰塞湖应急期处置的航测数据进行了一定的对比分析,并对未来开展有关的现场作业提出了有关的工作建议。以上研究内容对未来大型地质灾害现场数据采集、科学考察和相关应急装备研究具有较为重要意义。

China is a country with frequent geological disasters.After the occurrence of geological disasters,it is an important task for emergency rescuers to quickly determine the disaster situation and provide data support for the headquarters.UAV-borne LIDAR has been widely used in field mapping because of its advantage of light,fast,penetrating and more,especially in recent years,the combination of new flight mode of ground imitation flight has greatly improved the accuracy of data acquisition.In this paper,an exploratory field survey of the Baige barrier lake site was carried out by UAV-borne LIDAR under the ground imitation flight mode.Through data processing and analysis,not only the existing topographic and geomorphological information after the dredging of the barrier lake was accurately obtained,but also a certain comparative analysis was carried out combined with the aerial survey data of the barrier lake during the emergency response period.This thesis also put forward some suggestions for the future field work.The above research contents are of great significance to the field data collection,scientific investigation and related emergency equipment research of large-scale geological disasters in the future.