Reserves of increase of efficiency of coal extraction sections of coal mines

Abstract

Improving the level of industrial safety in coal mines and the efficiency of min ing is possible through automation of production and management processes, the widespread introduction of monitoring systems and sensors for monitoring and accounting of production processes and operations. The analysis of experi mental studies carried out on the excavation site of the coal mine allowed us to make the following conclusion that in the implementation of coal breaking in the treatment face at the feed speed of the combine at the level of design indicators, there is a significant underutilization of the installed equipment. In the publication it is proposed to use a discrete method of controlling the feed speed of the combine harvester. The results of simulation of the work of the coal mine excavation site, with a discrete change in the feed speed of the harvester will allow to develop technological solutions for coal mining by underground method with increased levels of safety and efficiency. Figures: Fig. 1. TheamountofcoalinlavaNo. 17-49atshearerconstantfeedrateof6m/min: blue, black, green, red curves are amounts of coal on reloader, scraper conveyor, belt conveyor and total, respectively. Fig. 2. Amounts of coal using shearer optimal feed mode with 10 m/min initial speed: colored curves meaning is the same as in Fig. 1. Fig. 3. Optimal mode of the shearer feed rate variation relative to the roof support number.