基于无人机LIDAR的露天矿填挖方算量范围提取方法  

Method of extracting the calculation range of cut-fill in open-pit mines based on unmanned aerial vehicle LIDAR

作　　者：刘新宇 王嘉 鹿文娇 刘光伟[2] 李渊博 LIU Xinyu;WANG Jia;LU Wenjiao;LIU Guangwei;LI Yuanbo(Benxi Iron&Steel Mining Co.,Ltd.,Benxi 117000,China;Institute of Mining,Liaoning Technical University,Fuxin 123000,China)

机构地区：[1]本钢矿业公司,辽宁本溪117000 [2]辽宁工程技术大学矿业学院,辽宁阜新123000

出　　处：《露天采矿技术》2024年第5期18-21,共4页Opencast Mining Technology

摘　　要：针对传统露天矿填挖方算量范围确定方法工作效率低、劳动强度大、受主观因素影响大等问题;基于无人机LIDAR采集的点云数据,提出了一种露天矿填挖方算量范围确定算法;算法对点云进行格网划分,然后设置高差、连通区域等参数将符合露天矿填挖方算量范围的点云提取出来,最后采用Alpha shapes算法对其进行轮廓线提取,形成填挖方区域边界线。将该算法应用于南芬露天矿两期点云的填挖方算量范围提取,结果表明:输出的边界线和点云均与三维模型重合较好,为2期点云填挖方量计算提供准确的算量范围。Aiming at the problems such as low efficiency,high labor intensity and subjective factors of the traditional method of determining the calculation range of cut-fill in open-pit mine,based on the point cloud data collected by unmanned aerial vehicle LIDAR,an algorithm to determine the calculation range of cut-fill in open-pit is proposed.The algorithm divides the point cloud into grids,then sets parameters such as height difference and connected area to extract the point cloud that meets the calculation range of cut-fill in open-pit mine,and finally extracts its contour line to form the boundary line of cut-fill area.The algorithm is applied to extract the calculation range of the two phase point cloud of Nanfen Open-pit Mine.The results show that the output boundary line and point clouds coincide well with the 3D model,which provides an accurate calculation range for the two phase point cloud.

关 键 词：露天矿 无人机 点云数据 特征提取 Alpha shapes算法 

分 类 号：TD676[矿业工程—矿山机电]