HORIZON-ORIENTED METHOD OF PREPARATION OF SHALLOW AND MEDIUM MINE BEDS WITH DEVELOPMENT OF UPWALLS OR DOWNWALLS DEPENDING ON MINING-AND-GEOLOGICAL AND MINE ENGINEERING FACTORS Russian patent published in 2011 - IPC E21C41/18 

FIELD: mining.

SUBSTANCE: method involves preparation of existing and new horizons, development of longwall face columns as per the specified technological angles in compliance with mining-and-geological and mine engineering factors, including flooded fields. For mine beds with alternate position angles of 0 to 35°, developments adjacent to longwall face and with alternate upward or downward angles pass along non-straightline route or non-straightline route in combination with straight-line route so that their upward or downward angle did not exceed the specified technological angle. Installation chambers of cleaning complexes at advance of longwall faces with zero and alternating-sign bed position angles shall be located at the distance prior to mounting of the main roofs with inevitable water influx from the overlying water-bearing beds so that stable upward angle of beds at each point throughout the length of longwall faces was at least 2°.

EFFECT: increasing coal extraction and simplifying transportation of people, delivery of materials and equipment at elongation of extraction pillars.

1 dwg