APPLICATION OF QUALITY MANAGEMENT TOOLS FOR EVALUATING THE FAILURE FREQUENCY OF CUTTER-LOADER AND PLOUGH MINING SYSTEMS

摘要

Failure frequency in the mining process, with a focus on the mining machine, has been presented and illustrated by the example of two coal-mines. Two mining systems have been subjected to analysis: a cutter-loader and a plough system. In order to reduce costs generated by failures, maintenance teams should regularly make sure that the machines are used and operated in a rational and effective way. Such activities will allow downtimes to be reduced, and, in consequence, will increase the effectiveness of a mining plant. The evaluation of mining machines’ failure frequency contained in this study has been based on one of the traditional quality management tools – the Pareto chart.