隧道三维点云施工监测技术与应用

发布时间：2018-05-11 14:33

本文选题：隧道施工监测 + 坐标转换　；参考：《现代隧道技术》2014年05期

【摘要】：隧道工程作为特殊的地下工程构筑物,施工过程具有很大的难度和风险,对施工过程进行信息化监测十分重要。采用三维激光扫描测量技术,通过三维点云测量,可以进行隧道开挖过程与模型对比分析、变形对比分析和侵限对比分析,及时地掌握隧道施工过程中隧道的沉降和收敛情况、隧道结构的受力和变形情况,为及时调整支护参数、确定二次衬砌最佳时机和修改设计提供可靠的依据;并可依监测成果进行隧道施工安全风险预警预报和风险分级管理。工程实践表明,三维激光扫描系统具有速度快、精度高等优点;测量结果与Leica TPS1200全站仪对比表明,精度符合规范规定的相关要求,数据十分接近。
[Abstract]:As a special underground engineering structure, the construction process of tunnel engineering is very difficult and risky, so it is very important to monitor the construction process with information technology. By using 3D laser scanning measurement technology and 3D point cloud measurement, the tunnel excavation process can be compared with the model, the deformation and the invasion limit can be compared and analyzed, and the settlement and convergence of the tunnel during the tunnel construction can be grasped in time. The stress and deformation of tunnel structure can provide a reliable basis for adjusting the supporting parameters, determining the best time for secondary lining and modifying the design, and can be used to forecast and forecast the safety risk and risk classification management in tunnel construction according to the monitoring results. The engineering practice shows that the 3D laser scanning system has the advantages of high speed and high accuracy, and the comparison of the measurement results with the Leica TPS1200 total station indicates that the accuracy accords with the relevant requirements of the specification and the data are very close.
【作者单位】：北京工业大学;北京市公路桥梁建设集团有限公司;中铁二十二局集团有限公司;
【基金】：国家科技部“十一五”科技支撑项目(2006BAJ27B04) 北京市教委科技计划面上项目(KM2012108530058)
【分类号】：U456.3

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