免像控无人机航测技术在舟曲县立节北山滑坡-泥石流灾害应急处置中的应用

近年来，无人机航测技术在地质灾害防治领域广泛应用，特别是在突发性地质灾害应急处置中优势显著。免像控无人机航测技术能够快速获取测绘数据，跟传统航测方法相比，极大的节约了时间和人力成本。文中利用大疆精灵Phantom 4 RTK无人机，对甘肃省舟曲县立节北山滑坡-泥石流灾害进行免像控航测数据获取和处理。根据航测成果快速获取了滑坡形态特征、泥石流沟道特征等相关参数, 分析了滑坡变形迹象，并应用实地测量数据进行免像控航测精度评价分析。研究结果表明:滑坡形态特征、泥石流沟道特征、变形迹象均与实地相符，检核点精度满足《低空数字航空摄影测量内业规范》（GH/Z 3003—2010）数据生产规范，成果数据可用于灾害体变形特征分析、几何参数快速提取，辅助分析评估险情、灾情。对突发性地质灾害应急处置中无人机测绘数据的快速获取工作具有一定的借鉴意义。

Application of image-free control UAV aerial survey technology in emergency treatment of landslide-debris flow disaster in Lijie north hill,Zhouqu County

In recent years, UAV aerial survey technology has been widely used in the field of geological disaster prevention,especially in the emergency disposal of abrupt geological hazard. Image free UAV aerial survey technology can quickly obtain surveying and mapping data. Compared with traditional aerial survey methods, it greatly saves time cost and labor cost. In this paper, the DJI Phantom 4 RTK UAV is used to acquire and process the image free aerial survey data of landslide and debris flow disaster in Lijie North Hill landslide-debris flow disaster in Zhouqu County, Gansu Province. According to the aerial survey results, the relevant parameters such as landslide morphological characteristics and debris flow gully characteristics are quickly obtained, the signs of landslide deformation are analyzed, and the field survey data are used to evaluate and analyze the accuracy of image free aerial survey.The results show that the deformation signs, morphological characteristics and debris flow gully characteristics of landslide are consistent with the field, and the accuracy of verification points meets the data production specification of low altitude digital aerial photogrammetry(GH/Z 3003—2010). The result data can be used for the analysis of deformation characteristics of disaster body, rapid extraction of geometric parameters, and auxiliary analysis and evaluation of danger and disaster, It has a certain reference significance for the rapid acquisition of UAV mapping data in the emergency disposal of abrupt geological hazard.