Majority of the world's mine production is made by surface mining facilities for various reasons. Use of explosives is the most economical way in loosening of the main rock where hard rock formations exist. The degree of fragmentation affects the subsequent excavation and loading operations as well as indicates the success of the blasting process. Although the most preferred method for the measurement of fragment size of blasted rock is digital image analysis, the method also includes some limitations and errors. In this study, size distribution of the blasted rock was measured directly using laser scanning-LiDAR technology and a new algorithm. The laser measurement method comes to the forefront with fast and reliable results compared with traditional measurement methods. The acquisition of the point cloud data by means of a terrestrial laser scanner from the blasted rock pile, generation of the three-dimensional model of the pile in the computer environment, surface reconstruction. and identification of the fragments forming the pile with an algorithm developed, and the determination of the size distributions of the fragments constitute the steps of the study. It has been concluded that this approach can be used effectively to determine the size distribution of fragmented rock piles in order to evaluate the blasting results.

中文翻译：

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使用激光雷达扫描数据实际测量爆破岩石的粒度分布

出于各种原因，世界上大部分的矿山生产都是由露天采矿设施进行的。使用炸药是松散存在硬岩层的主要岩石的最经济方式。破碎的程度影响后续的挖掘和装载操作，并表明爆破过程的成功。尽管测量爆破岩石碎片尺寸的最优选方法是数字图像分析，但该方法也存在一些局限性和误差。在这项研究中，使用激光扫描-LiDAR 技术和新算法直接测量爆破岩石的尺寸分布。与传统测量方法相比，激光测量方法以快速可靠的结果走在前列。通过地面激光扫描仪从爆破岩桩中获取点云数据，在计算机环境下生成桩的三维模型，表面重建。使用开发的算法识别形成桩的碎片，确定碎片的尺寸分布构成了研究的步骤。已经得出结论，该方法可以有效地用于确定碎石桩的尺寸分布以评估爆破结果。碎片大小分布的确定构成了研究的步骤。已经得出结论，该方法可以有效地用于确定碎石桩的尺寸分布以评估爆破结果。碎片大小分布的确定构成了研究的步骤。已经得出结论，该方法可以有效地用于确定碎石桩的尺寸分布以评估爆破结果。