基于激光扫描的矿区高压线塔变形提取研究

Deformation extraction analysis of high voltage tower in mining area based on laser scanning technology

高压线塔属于杆状构筑物,对水平、沉降、倾斜变形非常敏感,利用三维激光扫描技术对高压线塔进行变形监测是评估其受影响程度的重要手段。试验将仿真高压线塔作为扫描对象,结合最小二乘拟合平面的试验方法,评定其三维激光扫描单点定位精度,以及分析在不同距离、密度下的单点定位精度,并给出了数据提取与倾斜分析的具体方法和步骤,为真实扫描提供一种辅助决策作用。结果表明:对高压线塔的数据采集适合将测站设在10m左右,密度设置在0.002m左右;实验以西南塔腿为例,研究得出在水平投影上变形最大。

The high voltage tower is a rod-shaped structure, which is very sensitive to horizontal, settlement and tilt deformation, terrestrial laser scanning deformation monitoring of high-voltage towers is an important means of assessing their impact. The simulated high voltage tower was used as a scan object, experimental method of least square fitting plane was adopted to evaluate the positioning precision of the single point, and the single point positioning precision under different distance and density, the methods and steps of data extraction and tilt analysis were also introduced, which provided auxiliary decision for real scanning. The experimental results show that the data collection of the high voltage tower is suitable for locating the station at about 10m, and the density is set at about 0. 002m; take the southwest tower leg as an example, the maximum deformation is on the horizontal Droiection.