METHOD OF OPEN-UNDERGROUND DEVELOPMENT OF COAL BED, LYING IN THE FORM OF BRACHYSYNCLINE Russian patent published in 2018 - IPC E21C41/00 

FIELD: mining.

SUBSTANCE: invention relates to mining, in particular to the open-underground development of a thick coal bed, lying in the form of brachysyncline, horizontal layers by mobile means of mechanization used in the performance of underground mining. Method includes constructing a horizontal working platform on the day surface, carrying out of the opening inclined passage from the work platform to the level of the underlying layer by mobile means of mechanization, extraction of coal by these means of mechanization by carrying out horizontal excavation chambers away from the opening inclined passage, deepening of the opening inclined passage with leaving commensurate inter-chamber pillars between layers and delivering the chipped coal by the excavation chambers and opening the inclined passage to the temporary warehouse to be arranged on the work platform. At that, the opening inclined passage is made in the direction of the brachysyncline lock along the bed and its border with the soil at an angle of no more than permissible one for mobile means of mechanization, extraction chamber is made from the opening inclined passage on the side of the hanging wall, second opening inclined passage and all subsequent ones are made in the foot wall of the bed relative to the previous opening inclined passage at a distance commensurate with the accepted length of the extraction chamber, and in the brachysyncline locking part, the coal is also extracted from the foot wall side.

EFFECT: technical result is an increase in the coal bed development efficiency.

1 cl, 3 dwg