基于贴近摄影测量的箭穿洞危岩体监测

The Monitoring of Jianchuandong Dangerous Rock Mass Based on Nap-of-the-Object Photogrammetry

针对传统危岩体监测方法存在效率低、危险程度高、点云缺失、地物遮挡等问题,提出基于贴近摄影测量的危岩体监测方法,并将其成功应用于巫峡箭穿洞危岩体监测项目中。结果表明,该方法作业过程安全性高、效率高,单次飞行所获取的有效影像数据量大、影像分辨率可达亚厘米级甚至毫米级,所构建的三维模型相对精度达到亚厘米级,纹理信息更加清晰,较为准确地展现危岩体结构。贴近摄影测量技术以其精细化的优势,将在危岩体监测、地质灾害防护设计领域具有更加广阔的应用前景。

In view of the problems of low efficiency,high degree of danger,lack of point clouds,and shielding of ground objects in traditional dangerous rock monitoring methods,this paper proposes a dangerous rock monitoring method based on close photogrammetry,and successfully applies it to the dangerous rock monitoring project of Wuxia Arrow Tunnel.The results show that the operation process of this method is safe and efficient,the amount of effective image data obtained by a single flight is large,the image resolution can reach sub-centimeter level or even millimeter level,the relative accuracy of the three-dimensional model built can reach sub-centimeter level,the texture information is clearer,and the structure of dangerous rock body is more accurately displayed,close to the photogrammetry technology,with its advantages of refinement,will have a broader application prospect in the field of dangerous rock mass monitoring and geological disaster protection design.