关键词: 堤防应急除险; 倾斜摄影测量; 三维模型; 无人机; 应急管理;

Abstract: Embankment emergency treatment work is characterized as quick response, complicate situation and short treatment time. The premise of preparing emergency treatment plan is to obtain the terrain of the landslide efficiently and comprehensively. Compared with the traditional ground measurement technology, UAV tilt photogrammetry has distinct advantages, such as rapid measurement, unrestricted traffic and abundant types of data output. Taking the landslide of an embankment as an example, the DJI Phantom4 RTK was used to carry out tilt photography of landslide, and the DJI Terra was used to generate orthography and 3 D model of the landslide. The appearance, location, range and cross-sectional of the landslide were extracted base on the 3 D model. The results showed that UAV tilt photogrammetry only took less than 2.5 hours to accomplish the measurement and greatly improved the work efficiency. The maximum errors in the plane and relative elevation difference were 3 cm and 5 cm respectively. The advantages of UAV tilt photogrammetry are very obvious in emergency work like embankment emergency treatment.

Key words: embankment emergency treatment; tilt photogrammetry; 3D model; UAV; emergency management;