无人机倾斜摄影技术在城市化建设中地质灾害早期识别应用

The Application of Tilt Photography of Unmanned Aerial Vehicle to Early Identification of Geohazards in Urban Construction

针对城市化建设中地质灾害问题,提出了一种基于无人机倾斜摄影技术的地质灾害早期识别技术与方法。以地下空间利用强度高、目前周边城市化建设频繁的锦城广场为例,通过无人机倾斜摄影处理技术流程,构建研究区高精度正射影像与三维立体实景场景。通过解译分析,提取地质灾害形变信息及范围,最后通过现场调查对解译形变区进行了实地复核、验证。结果表明,基于无人机倾斜摄影的地质灾害早期识别技术与方法具有效率高、机动性强、投入少、精度高的优势,可以方便技术人员快速解译、分析、识别城市化建设过程中地质灾害问题,具有较好的推广前景。

This paper has a discussion on an early identification technology and method of geohazards in urban construction based on UAV tilt photography by the example of the Jincheng Square characterized by high intensity of underground space utilization and surrounding frequent construction. Firstly, a high-precision DOM and the three-dimensional scene model for the research area is built by means of UAV tilt photography. Secondly, information on deformation and its scope of geohazards is extracted by interpretation and analysis, and checked and verified by field investigation. The results show that the early identification technology and method of geohazards based on UAV tilt photography can help technicians to quickly interpret, analyze and identify geohazards in urban construction with advantages of high efficiency, high mobility, low investment and high accuracy, and have a good prospect of popularization.