| 摘要 |
FIELD: mining.SUBSTANCE: method comprises the cleaning of coal bed or beds by striking by open mining operations and installation on a bed of a drilling unit, for coal drilling-out at an angle from 60° to 90°, with reference to the bed strike axis, and to the depth 100 meters and deeper. To increase a productivity of coal extraction, and also to decrease of load on the cutting working body in case of emergencies, a bucket auger is formed by two parts, namely the cutting working body and a lift cylindrical ladle connected to each other by the coupling device. Inside the bucket auger an auger-drill element for loading of minerals into the lifting cylindrical ladle is installed.EFFECT: improvement of efficiency of development of steeply pitching coal beds and environmental safety of mining operations.7 cl, 3 dwg |
