| 摘要 |
FIELD: mining. ^ SUBSTANCE: method involves drilling of beds with longitudinal working trench to outputs of beds and development of thick layer along the strike to the boundary of mining allotment by using an open method, drilling, preparation and development of series of gently sloping and/or steep beds in boards and bottom of the cut by using an underground method, reclamation of open-pit minings. At that, drilling of beds is performed with working trench along the crest line of anticline to the depth of lower bed position, drilling of bed series is performed on both sides of anticline with double inclined shafts from working trench to beds. During development of beds by using underground method the panel-type and/or horizon-oriented development system is used during flat dip of beds and level and sublevel development system is used during steep bed dip with mechanised coal extraction on gently sloping beds, and hydraulic and/or slice mechanical development system on steep beds with complete failure of roof. At that, water intakes of mine water drainage are built at lower points of shafts on both sides of anticline and equipped with devices for water extraction from mined rock at hydraulic and/or mechanical hydraulic coal extraction. ^ EFFECT: improving completeness of extraction of mineral deposits, reducing losses of stock, volumes of stripping operations and ecological damage. ^ 3 dwg |
