复杂条件下基于三维激光扫描技术的某过江隧道形变监测研究  

Study of Deformation Monitoring of a River Crossing Tunnel Based on Three-dimensional Laser Scanning Technology Under Complex Conditions

作　　者：周恒 朱利明 刘良金[2] 阮宏杰 管栋良 ZHOU Heng;ZHU Liming;LIU Liangjin;RUAN Hongjie;GUAN Dongliang(Nanjing Jiangbei District Public Works Construction Center,Nanjing 211800,China;Nanjing Gongda Tunnel and Rail Transit Research Institute Co.,Ltd.,Nanjing 210004,China;Nanjing Tech University,Nanjing 211816,China)

机构地区：[1]南京市江北新区公共工程建设中心,江苏南京211800 [2]南京工大桥隧与轨道交通研究院有限公司,江苏南京210004 [3]南京工业大学,江苏南京211816

出　　处：《城市勘测》2023年第6期129-134,共6页Urban Geotechnical Investigation & Surveying

基　　金：江苏省自然科学基金青年基金(BK20220366)。

摘　　要：针对隧道内部空间狭窄、设施较多、视野受限等复杂条件,常规的基于三维激光技术的隧道变形监测技术应用受到了限制。本文基于标靶球提取监测点位置,根据标靶球球心位置计算基准监测点与变形监测点之间的距离,并通过距离变化来监测隧道管片衬砌的形变信息。基于此方法,本文处理了为期两个月的三维激光点云观测数据,结果表明隧道断面未出现厘米级的较大形变。该结论与隧道内的静力水准仪监测结果相一致,证明在复杂条件下,利用三维激光扫描仪开展变形监测是可行的。In the complex conditions such as narrow space,more facilities and limited field of vision in the tunnel,the application of conventional tunnel deformation monitoring technology based on 3D laser technology is limited.In this paper,the location of monitoring points is extracted based on the spherical targets,and the distance between the reference monitoring point and the deformation monitoring point is calculated according to the center position of the spherical targets.Then,the deformation information of tunnel is monitored through the change of distance.Based on this method,this paper processes the 3D laser point cloud observation data for two months.The results show that there does not appear centimeter-level deformation in the monitored tunnel section,which is basically consistent with the monitoring results of static level in the tunnel.This research proves that deformation monitoring using the 3D laser scanner is feasible under complex conditions.

关 键 词：三维激光扫描技术 隧道 形变监测 曲线拟合 标靶球 

分 类 号：P225.2[天文地球—大地测量学与测量工程] P258[天文地球—测绘科学与技术]