空地一体三维建模技术在地质灾害调查中的应用  

Application of three dimensional modeling technology in the investigation of geological hazards

作　　者：孙立恒 张华平 SUN Liheng ZHANG Huaping(Department of Geographic Information Engineering,Jiangxi Geological Bureau,Nanchang 330001,China)

机构地区：[1]江西省地质局地理信息工程大队,江西南昌330001

出　　处：《经纬天地》2023年第3期94-97,共4页Survey World

摘　　要：灾害风险调查和重点隐患排查是中央到地方的重点工作任务之一,在山区高危边坡崩塌地质灾害精细化调查中,人工调查方式工作效率低且风险系数高。基于传统无人机倾斜摄影测量技术建立的实景三维模型能减少外业工作量,但由于近地山体分辨率和精度低、纹理映射不足,因此难以全面地观测岩体滑坡及崩塌情况。应用无人机摄影测量技术融合近地影像进行地质灾害空地一体三维建模,经验证,该技术可以提高三维模型的整体精度,满足精细化病害坡体或危岩体结构裂隙调查的要求。Disaster risk investigation and key hidden danger investigation are one of the key tasks from the central government to the local government.During the fine investigation of high risk slope collapse geological disasters in mountainous areas,the manual investigation method has been found to be in low efficiency and high risk.The 3D model obtained by the traditional UAV tilt photogrammetry can reduce the field workload.However,due to the low resolution and precision of the near-earth mountain and insufficient texture mapping,it is difficult to observe the landslide and collapse situation of the rock mass comprehensively.In this paper,UAV photogrammetry technology is used to integrate near-earth images to conduct three-dimensional modeling of geological disasters.It has been proved that this technology can improve the overall accuracy of the three-dimensional model and meet the requirements of fine investigation of structural cracks in diseased slopes or dangerous rock masses.

关 键 词：空地一体 实景三维模型 崩塌体 精细化调查 

分 类 号：P258[天文地球—测绘科学与技术]