METHOD OF FULL DEVELOPMENT OF GENTLY SLOPING COAL BEDS WITH POWER-DRIVEN SYSTEMS WITHOUT ANY PREPARATORY MINE WORKINGS Russian patent published in 2012 - IPC E21C41/18 

FIELD: mining.

SUBSTANCE: at full development of gently sloping coal beds with power-driven systems without any preliminary driving of preparatory mine workings there first developed is the bed with two short faces as per continuous development system. For long face there formed are preparatory mine workings in the worked-out area after short faces by laying the strip of filling mixture. Reinforcement of working excavation of short faces by means of anchor support installed between the working face and powered support sections is performed only on end sections equal to the width of the preparatory mine workings being formed. Cutting-off support is installed in the worked-out space of short faces after sections of powered support along the boundary of the preparatory mine workings being formed. The worked-out space is covered with air-tight cloth along the lines of cutting-off support. Then, further development of long face is performed in backward direction with damping of the preparatory mine workings that have already been formed. Filling of the worked-out area is performed only between cutting-off support lines by destructing the roof in this section, and length of short faces is determined by mathematical formula.

EFFECT: providing high formation rates of preparatory mine workings.

2 dwg