井下环境对三维激光扫描测量精度的影响分析

Analysis of the Influence of Underground Environment on the Accuracy of 3D Laser Scanning Measurement

分析井下三维激光扫描测量精度的影响因素,指导井下测量设备的精度调准,从井下的特殊条件出发,设计了试验。试验分析表明:由于井下巷道空间狭小,且呈筒状走向、与激光束夹角较大,尽量将仪器摆放在与巷道垂直的方向上进行测量,并沿着巷道的中心线延伸,不仅可以保证巷道两侧的点云密度,而且可以获得更加密集的点云;通过控制点对激光扫描数据进行坐标改正后的精度,不仅可以高效地获得物体表面的空间信息,而且同时可以获取实体表面点的反射强度。

This paper analyzes the factors influencing the accurac y of underground 3D laser scanning survey, anddirects the accuracy adjustment of underground measuring equipment. Based on the special conditions of undergroundmine, a test is designed. The test analysis shows that the instrument is placed in the tunnel as far as possible becauseof the narrow space of underground tunnel, the tube-like direction and the large angle between the instrument and thelaser beam. Measuring in the vertical direction and extending along the center line of the roadway can not only ensurethat the density of point clouds on both sides of the roadway is equal, but also obtain more dense point clouds. At thesame time, the reflection intensity of the solid surface can be obtained.