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Performance analysis of rotary blast-hole drills through machine vibration and coarseness index mapping - A novel approach

机译：通过机振动和粗糙度指数测绘旋转鼓胀钻探的性能分析 - 一种新方法

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The performance of rotary drill machines commonly used in open-pit mines is measured based on the rate of penetration (ROP) and the bit wear. This paper develops a novel performance evaluation technique to obtain optimal drill operating regime through machine vibration and coarseness index mapping. The vibration levels of blast-hole drilling machines in axial and lateral directions were determined using accelerometers placed at the mast. The mean particle size (d) and characteristic particle size distribution curves for the drilled hole were plotted using sieve analysis and Rosin Rammler diagram. ROP showed an increasing trend with Mean particle size (d) with a correlation of R-2 = 0.61 and a decreasing trend with vibration for varied pulldown force and torque at a different rotational speed. A drill vibration index (DVI) is introduced as an indicator of vibration severity of the drill machine, and its relationship was studied with ROP and average mean particle size. (c) 2020 Elsevier Ltd. All rights reserved.
机译：基于渗透率（ROP）和钻头磨损的旋转钻机常用的旋转钻机的性能。本文开发了一种新颖性能评估技术，通过机振动和粗糙度指数测绘获得最佳钻孔操作制度。使用放置在桅杆处的加速度计确定轴向和横向方向上的振动钻孔机的振动水平。使用筛分分析和松香垃圾箱图绘制钻孔的平均粒度（D）和特征粒度分布曲线。 ROP显示出具有平均粒度（D）的趋势，具有R-2 = 0.61的相关性，并且在不同的旋转速度下与变化的下拉力和扭矩的振动减小趋势。钻振射指数（DVI）被引入钻机的振动严重程度的指示，并使用ROP和平均平均粒径进行了关系。 （c）2020 elestvier有限公司保留所有权利。

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