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

露天矿爆炸破碎快速评价系统

• 批准号: 04555152
• 负责人: OKAMURA Hiroshi
• 金额: $ 6.27万
• 依托单位: Kumamoto University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Developmental Scientific Research (B)
• 财政年份: 1992
• 资助国家: 日本
• 起止时间: 1992 至 1993
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-04555152/
• 关键词: Rock Fragmentation; Open Pit Mine; Image Processing; Image Binarizing; Fragment Size; Rock Blasting; 写真測量; 2値化処理; 粒度分析; 石灰石露天採掘; 2値化画像; 最大粒径; 輝度ヒストグラム; 発破砕起物; 画像解析; 計量形態学; フラクタル

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

露天矿爆破破岩在采矿过程中起着重要的作用。因为采矿或采石作业的目的是生产最佳大小和形状的岩石集料。在采矿和采石中，筛分用于确定大小和形状分布，这是一个乏味和耗时的过程，当涉及大量材料时，成本非常高。为此，本研究建立了爆破产生的岩石粒度分布快速估算系统，用于爆破设计和采矿过程控制。这是一种新的自动分析岩石破碎度分布的图像分析系统。建议采用标量条分法(SLSAM)对岩石碎裂分布进行图像分析。摇滚悲歌…的真实分布通过对等值圆法和SLSAM两种方法的对比分析，可以看出SLSAM方法优于等效圆法。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。建立了台阶爆破中岩石破碎形态的图像处理分析方法，并采用摄影测量的方法进行了分析。照片调查的目标是安装在工作台岩石破碎上的相同大小的球。碎片的大小和距离可以通过照片中拍摄的球的大小差异进行校正。分析了露天矿台阶爆破岩石块度分布规律。然后，将图像处理的最大碎片大小和50%碎片大小与实际碎片大小进行了比较。图像处理结果与实际块度吻合较好，说明了SLSAM在台阶爆破块度分布分析中的有效性。较少

项目成果

小池克明: "亀裂情報を組み込んだ採掘シミュレーション" 資源・素材学会誌. 108. (1992)

Katsuaki Koike：“结合裂纹信息的采矿模拟”日本自然资源与材料学会杂志 108。（1992 年）

Y.Noguchi, K.Soda, T.Nakayama and K.Kaneko: "A Case Study on Assessment of Rock Slope Stability and Groundwater Flow for Open Pit Mine." Proc.of the 9th Japan Symp.on Rock Mechanics. 587-592 (1994)

Y.Noguchi、K.Soda、T.Nakayama 和 K.Kaneko：“露天矿岩坡稳定性和地下水流评估案例研究”。

T.NAKAYAMA: "Conical-ended borehole technique for rock stress measurement and its application" Proc.of Int.symp on Assessment and prevention of Failvre Phenomena in Rock Engineering. 295-300 (1993)

T.NAKAYAMA：“用于岩石应力测量的锥形钻孔技术及其应用”Proc.of Int.symp，关于岩石工程中失效现象的评估和预防。

金子勝比古: "掘進発破振動の最大振幅予測法に関する一考察" 資源・素材学会誌. 108. 389-395 (1992)

Katsuhiko Kaneko：“挖掘和爆破振动最大幅度预测方法的研究”日本自然资源与材料学会杂志 108. 389-395 (1992)。

菅原勝彦: "円錐孔底ひずみ法の不均質岩盤への適用と考察" 第9回岩の力学国内シンポジウム講演論文集. 229-234 (1994)

菅原克彦：“圆锥孔底应变法在非均质岩体中的应用与思考”第九届全国岩石力学学术研讨会论文集229-234（1994）。