Application of 3D Fine Quantification Technology of Debris Flow Source Based on Multi-period UAV Images
The terrain and geology of the high mountain gorge area are complicated and the traffic conditions are difficult.Taking Chutou Ditch in Wenchuan County as an example,this paper uses UAV photomeasurement technology to obtain multi-phase and high-precision 3D real scene data,and establishes multi-phase difference model to analyze the surface morphology evolution of debris flow ditch.The results show that using multi-period UAV images to carry out 3D fine quantitative research on debris flow sources in complex mountainous areas can accurately measure the starting range and quantity of debris sources,and track the accumulation range and quantity of solid materials in the channel after starting.It provides technical methods for the investigation of debris flow source starting,transport and accumulation in complex mountainous areas,and provides data reference for debris flow prevention and control projects.
debris flow sourcereal 3D dataevolution processThree-Dimensional fine quantization
NETL
NSTL
万方数据
