基于微型无人机摄影技术的微构造信息提取研究——以博-阿断裂乌苏通沟东岸为例

Microstructure Information Extraction Based on the UAV Photogrammetry Technology—A Case Study of the Bolokenu-Aqikekuduke Fault on the East Bank of Wusutonggou

摘要:

利用微型无人机摄影测量技术，获取了博-阿断裂在乌苏通沟东岸的高精度地形、地貌数据，解译DEM数据，并结合野外调查工作，明确了断裂在乌苏通沟东岸冲洪积扇上19.3~31.1m的水平位错。分析获取的陡坎剖面，且对比陡坎两侧地貌的剥蚀程度，认为陡坎形成后受到后期水流的侵蚀，部分陡坎的高度在一定程度上被放大，断裂的实际垂直位错在0.7m左右。通过实例展示了无人机摄影技术在活动构造研究中的巨大潜力以及在微构造信息提取中的独特优势。

Abstract:

The high-precision topographic and geomorphic data of the Bolokenu-Aqikekuduk fault on the east bank of Wusutonggou are obtained by the UAV photogrammetry technology,by interpreting DEM data and field investigation. Right-lateral displacement is about 19.3~31.1m on the alluvial-pluvial fan of the east bank of Wusutonggou. By analyzing the scarp profile and comparing the degree of erosion of the landforms on both sides of the scarp,we find that the scarp is eroded by the later flow,and the height of some scarp is enlarged to a certain extent. The actual vertical dislocation of the fault is about 0.7m. The great potential of UAV photography technology in active structure research and its unique advantages in microstructural information extraction are demonstrated by examples.