基于激光扫描的露天矿山边坡监测与稳定性分析

SURFACE MINE SLOPE MONITORING AND STABILITY ANALYSIS BASED ON LASER SCANNING

以某矿山边坡为研究对象,采用激光扫描技术,对其坐标进行监测,并根据监测结果分析其稳定性,采用多站点平差法对其监测结果进行优化,并将其结果与近景摄影测量技术得出的检测结果对比,以验证激光扫描技术结果的准确性,得出以下结论:激光扫描仪得出的矿山边坡误差范围内点云数主要集中于–0.2500~0.2500 m,其中,第2期的误差范围内点云数最大,其值为198724个,此精度范围内的误差仅为0.5 m,采用激光扫描仪对矿山边坡进行监测的准确性较高。不同误差区域误差范围内点云数总体呈正态分布,说明该矿山边坡的较为稳定,发生滑坡的概率较小。

In this study,a mine slope is taken as the research object,and its coordinate is monitored by using laser scanning technology,and its stability is analyzed according to the monitoring results,and the monitoring results are optimized by using multi-station adjustment method,and the results are compared with the detection results obtained by close-range photogrammetry to verify the accuracy of the results of laser scanning technology,the conclusion is as follows:the number of point clouds in the error range of the mine slope obtained by the laser scanner mainly concentrates in–0.2500~0.2500 m,among which,the number of point clouds in the error range of the second stage is the largest,and its value is 198724,the error in this accuracy range is only 0.5 m,and the accuracy of monitoring the mine slope by laser scanner is high.The point cloud number in different error regions is generally normal distribution,which indicates that the slope of the mine is relatively stable and the probability of landslide is small.