CAJ | 학술논문

提出利用三维激光扫描点云截取隧道横断面拟合椭圆进行形变监测的方法。方法分为隧道中轴线提取，连续断面截取和椭圆拟合。隧道中轴线通过点云在水平面上投影后搜索的上下边缘点分别拟合二次曲线求均值得到；沿隧道中轴线设定等距间隔点，在间隔点处以中轴线正交方向截取断面；对截取的断面拟合椭圆并与设计值比较进行形变分析。实验表明，方法可以充分利用点云的大数据量特征，获得隧道内任意处的断面，是对目前监测方式的有益补充。
제출이용삼유격광소묘점운절취수도횡단면의합타원진행형변감측적방법。방법분위수도중축선제취，련속단면절취화타원의합。수도중축선통과점운재수평면상투영후수색적상하변연점분별의합이차곡선구균치득도；연수도중축선설정등거간격점，재간격점처이중축선정교방향절취단면；대절취적단면의합타원병여설계치비교진행형변분석。실험표명，방법가이충분이용점운적대수거량특정，획득수도내임의처적단면，시대목전감측방식적유익보충。
It puts forward using 3D laser scanning point cloud for deformation monitoring ,which method can be divided into tunnel axis extraction ,continuous profile clipping and elliptical fitting .After the tunnel axis through the point cloud in the horizontal plane projection the upper and lower edge points searched are fitted quadratic curve calculating mean .Along the tunnel axis the equidistant intervals are set ,with central axis orthogonal direction capture cross section at intervals .A deformation analysis is made to compare fitting elliptical with the design value .Experimental results show that the method can make full use of the large amount of data characteristics of point cloud ,and get in any area of the tunnel deformation ,w hich is the beneficial supplement of monitoring .