测绘工程
測繪工程
측회공정
ENGINEERING OF SURVEYING AND MAPPING
2015年
6期
4-8,13
,共6页
师海%白明洲%李丽%田岗%张云龙
師海%白明洲%李麗%田崗%張雲龍
사해%백명주%리려%전강%장운룡
K riging算子%点云数据%最小二乘法%岩溶隧道%岩体信息
K riging算子%點雲數據%最小二乘法%巖溶隧道%巖體信息
K riging산자%점운수거%최소이승법%암용수도%암체신식
Kriging operator%point cloud date%least square%Karst tunnel%rock mass information
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。
為瞭更高效、高精度地穫取巖體結構麵信息，藉助三維激光掃描技術，提齣併建立一種基于Kriging算子和最小二乘法組閤的點雲插值方法。首先對穫取的隧道點雲數據利用單一的最小二乘法進行插值，併以此為基礎，結閤Kriging算子的適應度函數建立組閤插值模型。在利用三維激光掃描儀已穫取的某巖溶隧道的原始點雲數據的基礎上，運用組閤模型進行插值處理，以此穫取巖體結構麵信息，併將組閤方法得到的結果與單一的插值方法進行對比，髮現組閤方法插值效果較好，誤差也較小。基于Kriging算法和最小二乘法結閤的插值方法，在利用三維激光掃描技術穫取巖溶隧道巖體幾何信息—結構麵產狀的過程中能更加精確、全麵，併可以用于巖體穩定性評價。
위료경고효、고정도지획취암체결구면신식，차조삼유격광소묘기술，제출병건립일충기우Kriging산자화최소이승법조합적점운삽치방법。수선대획취적수도점운수거이용단일적최소이승법진행삽치，병이차위기출，결합Kriging산자적괄응도함수건립조합삽치모형。재이용삼유격광소묘의이획취적모암용수도적원시점운수거적기출상，운용조합모형진행삽치처리，이차획취암체결구면신식，병장조합방법득도적결과여단일적삽치방법진행대비，발현조합방법삽치효과교호，오차야교소。기우Kriging산법화최소이승법결합적삽치방법，재이용삼유격광소묘기술획취암용수도암체궤하신식—결구면산상적과정중능경가정학、전면，병가이용우암체은정성평개。
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 .
