| 全站扫描点云支持下的铁路隧道横断面快速提取及变形分析 |
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| 引用本文： | 王龙飞,胡海峰,廉旭刚.全站扫描点云支持下的铁路隧道横断面快速提取及变形分析[J].测绘通报,2019,0(5):55-59. |
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| 作者姓名： | 王龙飞 胡海峰 廉旭刚 |
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| 作者单位： | 太原理工大学矿业工程学院,山西 太原,030024;太原理工大学矿业工程学院,山西 太原,030024;太原理工大学矿业工程学院,山西 太原,030024 |
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| 基金项目： | 国家自然科学基金（51704205；51574132）；山西省自然科学基金（201701D221025） |
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| 摘 要： | 使用全站扫描仪对采动区的铁路隧道进行扫描，在分析了测边后方交会设站扫描方法精度的基础上对拱形隧道的变形进行了研究，提出了通过拱形隧道的拱顶轴线完成横断面快速提取的方法。该方法基于高程差异获得隧道拱顶点集，而后采用随机采样一致算法对其处理并对处理后的点云拟合得到拱顶轴线，以该轴线方向作为横断面的法向完成横断面点集的快速提取，并基于所提取横断面点集获得横断面轮廓线并计算隧道变形。使用全站扫描仪的点云数据进行试验并进行变形分析。结果表明该方法能够完成对拱形铁路隧道横断面的快速提取，并且所提取的横断面能够反映隧道变形情况。
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| 关 键 词： | 全站扫描仪 隧道变形 横断面快速提取 拱顶轴线 |
| 收稿时间： | 2018-09-13 |
| 修稿时间： | 2019-03-13 |
Fast section extraction and deformation analysis of railway tunnel based on total station scanning point cloud |
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| WANG Longfei,HU Haifeng,LIAN Xugang.Fast section extraction and deformation analysis of railway tunnel based on total station scanning point cloud[J].Bulletin of Surveying and Mapping,2019,0(5):55-59. |
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| Authors: | WANG Longfei HU Haifeng LIAN Xugang |
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| Institution: | College of Mining Engineering, Taiyuan University of Technology, Taiyuan 030024, China |
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| Abstract: | The total station scanner is used to scan the railway tunnel in the mining area. Based on the precision analysis of the scanning method of the liner-resection station, the deformation of arch tunnel is studied. And a method for fast extraction of the cross section is proposed through the arch axis of the arch tunnel. The method is based on the elevation difference to acquire the arch point sets. Then the random sampling consensus is used to process the sets and the arch axis is fitted by processed sets. The direction of the arch axis is taken as the normal direction of the cross section to achieve the fast extraction of the cross-section point sets and the cross-section contours are acquired based on the cross-section point sets to calculate the deformation. Finally, the point cloud data from scanner are used for testing and deformation analysis. The results show that the method can quickly extract the cross section of railway tunnel and the deformation can be reflected by the extracted cross-section. |
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| Keywords: | total station scanner tunnel deformation fast extraction of cross section arch axis |
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