Modeling for the Steady State Production of Large Open Cast Mines- Case Study

Abstract

The steady state production is mainly depends on availability of the different production machineries and their break-down maintenance schedule. By reducing the idle time the availability can be increased which finally leads to maximization of their utility. The shovel-dumper system is used for the transport system in most of the opencast mines. When the production exceeds to 10,000 tons per day is considered to be the large opencast mines. For the simulation of this complicated circuit it is needed to prepare the work-sheet. The break-down of the different machineries and the existence period of these break-downs are needed to be analyzed very critically so the preventive maintenance can be suggested. In this project, all the machineries used for production are studied and their break-down frequencies and existence of the period were record. Through random number distribution to increase their availability and productivity in work condition are maximized and preventive maintenance is suggested. While thinking about the maximum utilization then considering about the maximum profit proper matching of different machineries is considered. If one or more dumper is added in the system there is likely chance that a dumper will wait in the queue to get its term. So before taking any decision, the overall cost of production should be considered with minimum idle time and waiting time of the dumper.