| 三维激光扫描技术在复杂地质隧道岩体信息获取中的优化 |
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| 引用本文： | 师海,白明洲,李丽,田岗,张云龙.三维激光扫描技术在复杂地质隧道岩体信息获取中的优化[J].测绘工程,2015(6). |
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| 作者姓名： | 师海 白明洲 李丽 田岗 张云龙 |
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| 作者单位： | 1. 北京交通大学 土木建筑工程学院,北京,100044;2. 中国地质环境监测院,北京,100081 |
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| 基金项目： | 国家自然科学基金资助项目 |
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| 摘 要： | 为了更高效、高精度地获取岩体结构面信息,借助三维激光扫描技术,提出并建立一种基于Kriging算子和最小二乘法组合的点云插值方法。首先对获取的隧道点云数据利用单一的最小二乘法进行插值,并以此为基础,结合Kriging算子的适应度函数建立组合插值模型。在利用三维激光扫描仪已获取的某岩溶隧道的原始点云数据的基础上,运用组合模型进行插值处理,以此获取岩体结构面信息,并将组合方法得到的结果与单一的插值方法进行对比,发现组合方法插值效果较好,误差也较小。基于Kriging算法和最小二乘法结合的插值方法,在利用三维激光扫描技术获取岩溶隧道岩体几何信息—结构面产状的过程中能更加精确、全面,并可以用于岩体稳定性评价。
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| 关 键 词： | K riging算子 点云数据 最小二乘法 岩溶隧道 岩体信息 |
Optimization discussion on Karst tunnel information acquisition under complex geological conditions with 3D laser scan technology |
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| SHI Hai,BAI Ming-zhou,LI Li,TIAN Gang,ZHANG Yun-long.Optimization discussion on Karst tunnel information acquisition under complex geological conditions with 3D laser scan technology[J].Engineering of Surveying and Mapping,2015(6). |
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| Authors: | SHI Hai BAI Ming-zhou LI Li TIAN Gang ZHANG Yun-long |
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| Abstract: | It is of great significance to access structural plane information of Karst tunnel rapidly and entirely in tunnel stability evaluation .To obtain the structural plane information with high accuracy effectively ,an point cloud interpolation method based on Kriging operator and least square is proposed by employing 3D laser scan technology .At first ,the tunnel point cloud data is interpolated with least square method separately ,based on w hich a combination interpolation model combining adaptability function of Kriging operator is established .To get the structural plane information ,the original point cloud data of a certain Karst tunnel obtained by 3D laser scanner is interpolated by using combination interpolation model . And a comparison between the results from combination interpolation method and single interpolation method is made ,finding the former is much better with less error .It proves that the combination interpolation method based on Kriging operator and least square can be used to obtain the geometric information—structural plane information of a Karst tunnel by employing 3D laser scan technology accurately and entirely ,thus this method can be used in the stability evaluation of rock mass . |
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| Keywords: | Kriging operator point cloud date least square Karst tunnel rock mass information |
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