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

通过开放的岩石碎片在采矿过程中起着重要的作用。当大量的材料很难估算爆破的估计分析岩石碎片的挖掘。Scalene切片分析方法（SLSAM）岩石trug的精神岩石trugmen的分布……通过两种方法分析了更多的方法，即等效圆方法和SLSAM。用图像的分析方法是通过图像处理来确定岩石碎片的形状的分析方法，在使用的岩石形状的分析方法中，用图像处理来建立了原始照片的红色照片图像。 n尺寸的尺寸是在板凳上安装的岩石碎片。将图像处理的最大和50％的片段与图像处理的结果进行了比较

项目成果

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”。

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）

金子勝比古: "露天掘り鉱山における斜面の安定性評価とピット湧水量の予測について" 第9回岩の力学国内シンポジウム講演論文集. 587-592 (1994)

金子胜彦：《露天矿边坡稳定性评价及坑泉水预测》第九届全国岩石力学学术研讨会论文集587-592（1994）。

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）。

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。