DEVELOPMENT METHOD OF COMPOSITE BEDS WITH WASTE ROCK INTERLAYERS Russian patent published in 2009 - IPC E21C41/16 

FIELD: mining.

SUBSTANCE: invention refers to mining engineering, and can be used when developing flat beds - with selective mining of mineral resource. Method includes excavating mineral resource by entry ways close to a working space. Roof is controlled by building a goaf pack 5 in the working space. Then, on goaf pack 5 there installed are pneumocylinders 6, and compressed air is supplied thereto. Excavation is performed from drifts by two entry ways I, II simultaneously directed towards each other. When mine faces 3 and 4 come to each other by the value equal to double value 2 l_f of the winning machine frame, one of the mine faces is directed to mineral resource mass by the value of entry way l_e. When that entry way intersects the other one, the latter is directed to mineral resource mass by the value of entry way l_e. After winning machines reach the drifts, excavation is repeated by two simultaneous entry ways directed towards each other.

EFFECT: increasing load on the mining face.

5 dwg