基于移动激光扫描技术的隧道限界检测  

Tunnel clearance inspection based on mobile laser-scanning technology

作　　者：安哲立 周鸣亮 马伟斌 袁振宇 刘昊 An Zheli;Zhou Mingliang;Ma Weibin;Yuan Zhenyu;Liu Hao(China Academy of Railway Sciences,Beijing 100081,China;College of Surveying and Geo-Informatics,Tongji University,Shanghai 200092,China;Railway Engineering Research Institute,China Academy of Railway Sciences Corporation Limited,Beijing 100081,China)

机构地区：[1]中国铁道科学研究院,北京100081 [2]同济大学测绘与地理信息学院,上海200092 [3]中国铁道科学研究院集团有限公司铁道建筑研究所,北京100081

出　　处：《工程勘察》2023年第11期42-46,58,共6页Geotechnical Investigation & Surveying

基　　金：国家自然科学基金资助项目(U1934218);国铁集团科技研究开发计划(P2020T001);铁科院集团公司科研项目(2020YJ219).

摘　　要：传统接触式隧道限界检测技术存在精度低、效率低、适用性差等缺陷,难以满足短暂天窗时间内隧道限界高效、高质量检测的需求。激光扫描技术具有高速、高精度、抗干扰等优势,以轨道车载移动扫描的方式,能够高效准确地采集隧道轮廓的三维激光点云。基于三维点云数据,随机采样一致性拟合算法与水平射线法的综合应用实现隧道断面的逐个提取与快速侵限判别,从而实现对整个隧道的高精度侵限检测。在某地铁隧道的限界检测实例中验证了移动激光扫描技术应用于隧道限界检测的效率与精度,能够满足隧道安全高效检测的需求。The traditional contact tunnel clearance detection method has shortcomings such as low accuracy,low efficiency and poor applicability,which is hard to meet the needs of rapid and accurate detection.Laser scanning technique,with advantages of high speed,precision,interference immunity,is applied to gather 3D laser point clouds of tunnels efficiently and accurately by vehicle-borne mobile scanning.Random sampling consistency fitting algorithm and horizontal ray method are used on 3D pointcloud data to extract tunnel section and discriminate clearance intrusion successively.The application to a subway tunnel demonstrates that the mobile laser scanning technology can be used to detect the tunnel intrusion events quickly and accurately,meeting the requirements of safe and efficient tunnel clearance detection.

关 键 词：隧道限界 移动激光扫描 限界检测 轨道交通 

分 类 号：U453[建筑科学—桥梁与隧道工程]