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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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。
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 crosssection 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.
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 crosssection 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.
引文
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[14]王小刚.测边后方交会单一方向精度分析[J].高速铁路技术,2014,5(6):58-62.
[15]朱德海,郭浩,苏伟.点云库PCL学习教程[M].北京:北京航空航天出版社,2012.
[2]李东敏,范百兴,周蕴,等.全站式扫描仪测量原理及精度分析[J].测绘通报,2014(8):131-133.
[3]李斌,王建宾,吉德云.徕卡Nova MS50全站扫描仪在电厂烟囱变形监测中的应用[J].测绘通报,2016(6):142-143.
[4]焦晓双,胡海峰,廉旭刚.基于三维激光扫描技术的矿区建筑物变形监测方法[J].金属矿山,2018(4):150-153.
[5]李豪,邹进贵,安祥生,等.徕卡MS50全站扫描仪在地铁隧道断面中的应用[J].测绘地理信息,2018,43(5):68-71,75.
[6]王令文,程效军,万程辉,等.基于三维激光扫描技术的隧道监测技术研究[J].工程勘察,2013,41(7):53-57.
[7] HAN S H,CHO S,KIM,et al. Automated and efficient method for extraction of tunnel cross sections using terrestrial laser scanned data[J]. Journal of Computing in Civil Engineering,2013,27(3):274-281.
[8]托雷,康志忠,谢远成,等.利用三维点云数据的地铁隧道断面连续截取方法研究[J].武汉大学学报(信息科学版),2013,38(2):171-175.
[9]李珵,卢小平,朱宁宁,等.基于激光点云的隧道断面连续提取与形变分析方法[J].测绘学报,2015,44(9):1056-1062.
[10]杜黎明,钟若飞,孙海丽,等.移动激光扫描技术下的隧道断面提取及变形分析[J].测绘通报,2018(6):61-67.
[11]唐琨,戴鑫,黄祖登.基于三维激光扫描的隧道变形监测方法研究[J].地理空间信息,2016,14(4):97-98.
[12]袁长征,滕德贵,胡波,等.三维激光扫描技术在地铁隧道变形监测中的应用[J].测绘通报,2017(9):152-153.
[13]谢雄耀,卢晓智,田海洋,等.基于地面三维激光扫描技术的隧道全断面变形测量方法[J].岩石力学与工程学报,2013,32(11):2214-2224.
[14]王小刚.测边后方交会单一方向精度分析[J].高速铁路技术,2014,5(6):58-62.
[15]朱德海,郭浩,苏伟.点云库PCL学习教程[M].北京:北京航空航天出版社,2012.