三维激光扫描技术在狭窄地下空间测量中的应用

Application of 3D laser scanning technology in the measurement of narrow underground space

对地下空间的测量是地下空间普查的重要环节,为地下空间开发利用提供基础资料。地下空间测量的重点和难点是建立地下空间基准,常规的测量是通过联系测量的方法,将地上空间基准引测到地下。但是对于狭窄的地下空间,常规的测量方法则很难或者无法使用。针对这种情况,本文使用一种基于三维激光扫描仪的测量方法,测站间通过公共部分进行连接,能够很好地进行空间基准的传递。同时,该方法的外业作业效率更高,采集的数据、信息更加全面。通过实际案例分析,基于三维激光扫描仪的测量方法能够很好地对狭窄地下空间进行测量。

The measurement of underground space is an important part of the general survey of underground space,which provides basic data for the development and utilization of underground space.The key and difficult point of underground space survey is to establish the underground space datum.The conventional measurement is to introduce the above-ground space datum into the underground by means of the contact measurement.But for narrow underground spaces,conventional measurements are difficult or impossible.In view of this situation,a measurement method based on 3 D laser scanner is used to connect the stations through the common parts,which can transfer the spatial datum well.At the same time,the field operation efficiency of this method is higher,and the collected data and information are more comprehensive.Through the analysis of practical cases,the measurement method based on 3 D laser scanner can measure the narrow underground space well.