| 基于地面激光技术的隧道变形监测技术 |
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| 引用本文： | 李健,万幼川,江梦华,高贤君.基于地面激光技术的隧道变形监测技术[J].地理空间信息,2012(1):14-17,1. |
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| 作者姓名： | 李健 万幼川 江梦华 高贤君 |
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| 作者单位： | 武汉大学遥感信息工程学院 |
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| 基金项目： | 国家自然科学基金资助项目(40901212);国家科技支撑计划资助项目(2011BAH12B03) |
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| 摘 要： | 研究了将地面激光技术应用于地铁隧道变形监测,运用基于点云法向量差异的点云分割算法对点云数据进行抽稀,使用抽稀后点云数据构建地铁隧道模型,对隧道进行整体变形分析,构建地铁隧道三维模型不仅提高了变形监测精度,而且能够反映隧道整体变形趋势。将此方法应用于天津地铁一号线隧道变形监测,通过与光纤位移计结果对比,变形监测精度在4 mm以内,能够满足地铁隧道变形监测的需要。
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| 关 键 词： | 地面激光 变形监测 地铁隧道 矢量分割 隧道模型 |
Tunnel Deformation Monitoring Based On the Terrestrial Laser Scanning Technology |
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| Abstract: | The integrated deformation analysis of Subway tunnel based on TLS was studied in this paper,and to simplify the point cloud by the method of point cloud segmentation based on vector variance of points was proposed,and then building the subway tunnel model using the simplified point cloud.That constructing the three-dimensional model of subway tunnel is not only improve the accuracy of but also reflect the deformation trend of the integrated tunnel.And the method proposed in this paper was tested by Number 1 subway tunnel of Tianjin,and compared the results with the fiber optical displacement sensor approach,the final result showed that the accuracy of TLS was below 4 mm,and it could meet the need of the deformation monitoring of subway tunnel. |
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| Keywords: | terrestrial laser scanning deformation monitoring subway tunnel vector segmentation tunnel model |
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