FIELD: mining.
SUBSTANCE: method involves preparation of extraction pillar with gangways, preparation of extraction strip - with end and neighbouring slopes along line of dip at formation soil between gangways, on both sides of strip, construction of erection chamber and erection in it of sections of modular support, mechanised slice mining of coal in mining face, forced transportation of coal along working face and ventilation of mining face due to common borehole depression. Mechanised extraction is performed with combined front-action machine with actuating element made in the form of horizontally oriented drum with cutters. Soil of each formation has the gradient of not more than allowable inclination angle for combined machine and self-propelled car. Coal transportation along the working face is performed using a self-propelled car to the end slope, at the gradient of extracted coal towards the neighbouring slope, or to the neighbouring coal lowering slope, at gradient of extracted coal towards end slope. Change of formation gradient direction is performed after the places of location of self-propelled car and combined machine are changed and they are turned in the chamber which is performed beyond the extraction strip and used again at extraction of neighbouring extraction strip with symmetric orientation of extracted formations. Coal pillars remaining within the limits of extraction strip are removed with cutting actuating elements of modular supports.
EFFECT: invention allows increasing efficiency and safety of coal extraction.
5 dwg
