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地下金属矿山开采形成的采空区已成为危及矿山安全生产的主要灾源之一,对矿产资源安全开采和矿区周边环境构成威胁,三维激光扫描技术能精确地获取采空区三维空间形态,已成为采空区高精度探测的主要手段。采空区传统等步距角扫描方法具有空间分辨率不均匀、效率低等缺点。结合采空区空间形态不规则等特点,提出采空区三维激光扫描空间分辨率的增强方法,推导了调节螺旋线间距和扫描轨迹上激光点间距的计算公式。矿山采空区扫描试验结果验证了方法的有效性,提高了三维激光扫描的空间分辨率,为采空区三维形态高精度获取提供了解决方案。
Gobs formed by the mining of underground metal mines have become one of the major hazards endangering the safe production of mines, threaten the safe mining of mineral resources and the surrounding environment of the mines, and the three-dimensional laser scanning technology can accurately obtain the three-dimensional space shape of the goaf. Become the main means of high-precision detection of goaf. The traditional equal-step-angle scanning method in goaf has the disadvantages of uneven spatial resolution and low efficiency. Combined with the characteristics of spatial irregularities in goaf, this paper proposes an enhanced method for spatial resolution of 3D laser scanning in goaf, and deduces the formulas for adjusting the distance between spirals and laser spots on scanning trajectories. The mined-out area scanning test results verify the effectiveness of the method, improve the spatial resolution of the three-dimensional laser scanning, and provide a solution for the high-precision acquisition of the three-dimensional morphology of the goaf.