THE TECHNOLOGICAL SCHEME OF MINING AND PREPARATION OF COAL WITH TAKING INTO ACCOUNT ITS USE IN REMOTELY LOCATED REGIONS OF YAKUTIA
The article presents the existing and future schemes of coal provision on remotely located regions the center and the north of Yakutia. Current regulations take into account for only a part of indicators of the coal quality required for the organization of its combustion with use of layering technology. The paper shows the low efficiency of the ordinary badly crushed coal. The research results of the existing situation to ensure the required level of coal quality for mining and consumption present. The specific reasons for losses in terms of quality and quantity in production chains «georesource-consumer» review. The article shows that rather unfavorable situation can be changed in the direction of improvement in the enhancement of existing coal quality management schemes. Introduction to the practice of operating and newly established small-scale open-pit of the additional process steps for the preparation of the coal to its subsequent burning improves the technological properties of the mined coal. The character of the distribution of ash and coal combustion heat in the layers of the current and newly established small-scale coal open-pit using the generated database of geological sampling. The paper reveals coal quality heterogeneities in beds that need to be considered for planning of mine operations. Technological scheme of the additional coal preparation in open-pit oriented for output with more acceptable quality to consumers is proposed. The scheme takes into consideration geological features of coal beds being mine and includes coal sorting at the stock with subsequent delivery of major classes, including coal calibrated in bags, to the most remote consumer, and fines in the boilers that used pulverized burning.