三维激光扫描技术在突发事故空间信息分析中的应用研究

三维激光扫描技术具有不接触、高密度、高精度和数字化等特点,可实现事故现场全息、全面、快速三维测量,根据事故现场扫描获取的点云,在后处理软件中可对现场三维点云的空间信息进行分析处理,提取有用数据为相关部门后续工作提供决策依据。采用三维激光扫描技术对某地路面塌方突发事故现场进行了应急保障测绘,介绍了其作业流程以及点云分析处理,各个测站的点云采用视觉追踪技术进行自动拼接,并根据拼接后的三维点云计算了塌方直径、面积、深度以及方量等空间信息。

Research on the Application of 3D Laser Scanning Technology in Sudden Accident Emergency Support Surveying

3D laser scanning technology has the characteristics of non-contact,high density,high precision and digitization,which can realize holographic,comprehensive and fast 3D measurement of accident site.According to the point cloud obtained by accident site scanning,the spatial information of 3D point cloud can be analyzed and processed in post-processing software,and useful data can be extracted to provide decision-making basis for the follow-up work of related departments.The emergency support mapping of pavement collapse accident site is carried out by using three-dimensional laser scanning technology,and its operation flow and point cloud analysis and processing are introduced.The point clouds of each station are automatically spliced by visual tracking technology,and the spatial information such as collapse diameter,area,depth and square quantity are calculated according to the three-dimensional point cloud computing after splicing.