The rapid evaluation system of blast fragmentation in open pit mine.

露天矿爆破破岩在开采过程中起着重要作用。因为采矿或采石作业的目的是生产最佳尺寸和形状的岩石骨料。在采矿和采石中，筛选用于确定尺寸和形状分布，这是繁琐且耗时的过程，并且当涉及大量材料时非常昂贵。因此，对爆破效果的快速评价是非常困难的，本研究建立了爆破产生的岩石粒度分布的快速评价系统，为爆破设计和采矿过程控制提供了依据。这是一个新的图像分析系统，用于自动分析岩石块度的分布。提出了利用图像分析技术分析岩石变形分布的不规则切片分析方法.岩石悲剧的真实的分布 ...更多信息 用等效圆法和SLSAM两种方法对两个站点进行了分析，通过比较得出SLSAM上级等效圆法.提出了利用原始照片的红色照片图像的亮度直方图进行图像自动二值化的方法.采用摄影测量的方法，建立了台阶爆破块度形态的图像处理分析方法。摄影测量中的目标是安装在台阶上的岩石碎片上的相同大小的球体。碎片的大小和距离可以通过1.5中所取球的大小差异进行校正。分析了露天矿台阶爆破的块度分布规律。然后，通过图像处理的最大和50%的碎片大小与实际进行比较。图像处理结果与实际尺寸吻合较好，说明该方法是分析台阶爆破块度分布的有效方法。少

The rock fragmentation by blasting in open pit mine plays an important role in the mining process. Bacause that the aim of a mining or quarrying operation is to produce rock aggregates of optimum size and shape. In mining and quarrying, screening is used for determining size and shape distributions, this is tedious and time consuming processes, and very expensive when it comes large volumes of material. From this reason, it is very difficult for quick estimating the effect of the blasting.In this research, the quick estimation system of rock size distribution produced by the blasting is established for the design of the blasting and the control of mining process. This is a new image analysis system for the analyzing the distribution of rock fragmentations automatically.The results obtained in this research are following.1. The scalene slice analysis method (SLSAM) as analyzing the distribution of rock tragmentation by image analysis is suggested.2. The real distribution of rock tragmen … More tations is analyzed by the two methods, namely, the equivalent circle method and the SLSAM.From comparison these results, it is made clear that the SLSAM is superior to the equivalent circle method.3. Automatic image binarizing procedure in which is used the luminance histogram of the red photo image of the original photograph, is proposed.4. The analyzing method of the shape of rock fragmentation in bench blasting is established by means of image processing which is used the procedure of photo survey. The targets in photo survey are same size balls installed on the rock fragmentation in bench. The size of fragments and the distance can be corrected by the size difference of the balls taken in photograph.5. The size distribution of rock fragmentation in bench blasting in open pit mine is analyzed. Then, the maximum and 50% fragment size by the image processing are compared with actual ones. The results from image processing are agreement with actual sizes.It is clarified that the SLSAM is effective for analyzing the size distribution of rock fragmentation in bench blasting. Less