CAJ | 학술논문

以地铁隧道为研究对象，应用地面三维激光扫描技术采集了部分隧道三维点云数据，采用基于几何特征点与ICP算法相结合的点云数据配准方法对多视点云数据进行配准。配准数据经去噪、精简后，基于NURBS曲面理论方法建立了扫描隧道点云数据的三维模型。通过对隧道两期扫描数据模型进行叠加分析，得到隧道部分纵横断面上的整体位移量。试验结果表明，地面三维激光扫描技术可以准确、全方位获取隧道空间数据，对隧道安全监测技术与方法起到补充和提高。
이지철수도위연구대상，응용지면삼유격광소묘기술채집료부분수도삼유점운수거，채용기우궤하특정점여ICP산법상결합적점운수거배준방법대다시점운수거진행배준。배준수거경거조、정간후，기우NURBS곡면이론방법건립료소묘수도점운수거적삼유모형。통과대수도량기소묘수거모형진행첩가분석，득도수도부분종횡단면상적정체위이량。시험결과표명，지면삼유격광소묘기술가이준학、전방위획취수도공간수거，대수도안전감측기술여방법기도보충화제고。
The subway tunnel is selected as the research object, and a part of the tunnel is scanned by 3D terrestrial laser scanning technology to obtain the 3D point cloud data of the researched tun-nel.A novel point cloud data registration method based on geometrical feature points and the ICP( iterative closest point ) algorithm is used to register scans from multiple positions.After denoising and simplification, the registered point cloud data is modeled based on the method of NURBS( non-uniform rational B-spline) surface.By overlaying two-periodic point cloud data, the whole displace-ment of the tunnel's vertical and horizontal sections can be obtained.The experimental results show that 3D terrestrial laser scanning technology can obtain accurate and omni-directional subway tunnel spatial data, so it is a supplement to the current tunnel safety monitoring methods.