METHOD FOR FACE DEVELOPMENT FROM EXCAVATION Russian patent published in 2009 - IPC E21C41/16 E21D23/00 

FIELD: mining engineering.

SUBSTANCE: method comprises mounting of sections of powered roof support in the erecting room, a lava conveyor, a cutter-loader and a gripper pad, coal extraction using cutter-loader and formation of sections of seam roof powered support by means of separate entry ways and in each entry way by means of separate groups. The gripper pad sections are connected together by means of flexible coupling and the end sections are connected by means of pulling element with cable hoists located in the developing entry of the extraction pillar. After the gripper pad has been erected, the stress shall be created and hydraulic racks shall be actuated and the sections of lava conveyor shall be removed towards the future lava. In future, when performing the next entry ways in every two following entry ways the operation cycle concerning entry ways performing by separate groups of powered support section for lava seam roof shall be repeated. At the end of the last entry way performing before pulling the last group of powered support sections towards removed sections of lava conveyor the gripper pad shall be disassembled. Then these sections shall be pulled towards removed sections of lava conveyor and the process of formation of sections of seam roof powered support shall be finished.

EFFECT: improved efficiency and safety of formation of sections of seam roof powered support.

3 cl, 22 dwg