Evaluation of Various Mining Equipment Used for Roadway Development in Coal Mines

摘要

This study attempts to evaluate the field performance of various mining equipment used at the development galleries of coal mines. These are hand-held and jumbo rock drills, and a roadheader used inmechanical excavation. For this purpose, the penetration rates of rock drills were monitored and measuredin the field. The physical, mechanical, and drillability properties were determined through the collectedsamples in order to understand the complex interactions between the rock and bit/pick. The abrasive mineralcontent was also analyzed with XRD analysis to examine the wear on the cutting/drilling tools. Besides,the specific energy of the equipment was calculated relying on the operational parameters. A comparisonof the monthly advance and production rates of the drilling rigs and roadheader was made. The relationsamong operating power, specific energy, and design of buttons/picks were investigated. It has been foundthat the average advance and production rates of the mining equipment are consistent with the penetrationrate. The results verified that the roadheader used in mechanical excavation and the jumbo drill used indrilling and blasting technique are the machines maximizing the advance and production rates.