基于三维激光扫描技术的隧洞三维可视化监测应用

Three-dimensional Visualization Monitoring for Tunnel Based on Three-dimensional Laser Scanning Technology

三维激光扫描仪具有高频率、高精度、高时效、易操作的特性,已被广泛应用于工程建设领域.文章提出一种基于地面激光扫描数据的精确监测与直观管理隧洞体形变的方法:运用高精度地基三维激光扫描技术对隧洞体进行多次扫描;计算、分析多时相激光扫描数据;检测定位隧洞体的形变;其监测成果在依据三维激光扫描成果构建的高精度三维数字实景上运行管理.将此方法运用于南水北调穿黄隧洞形变监测,可实现准确定位隧洞体的形变区域.

Three-dimensional laser scanner has been widely used in a variety of engineering construction regarding its high scanning rate, high data accuracy, high efficiency and easy operation. This paper presents a framework for monitoring tunnel deformation using high-accurate terrestrial laser scanning data. In order to detect the tunnel deformations, the presented framework first computes and analyzes tunnel profiles from the scanned tunnel data, which is an integration of multiple-station and multiple-period scans. Then, we reconstruct3 D models of the tunnel from the scanned terrestrial laser scanning data for visual management. The experiments on the Yellow River tunnels in the south-to-north water diversion project show that the presented tunnel management framework is applicable and feasible to monitor and locate the deformations using terrestrial laser scanning data.