MINE WORKING REINFORCING METHOD AND DEVICE FOR ITS IMPLEMENTATION Russian patent published in 2011 - IPC E21D20/00 

FIELD: mining.

SUBSTANCE: mine working reinforcing method involves drilling of bore pits in rows perpendicular to mine working axis, installation of composite anchors in them, their attachment to each other by means of crown runners and angles with holes made in its flanges, into one of which the end of crown runner of the previous row is passed, and through the other one the anchor of the next row is installed into the bore pit. When the mine working approaches surface of weakness of the rock mass, drilling of inclined bore pits is performed and installation of additional anchors into them is carried out; at that, axes of additional anchors are oriented perpendicular to surface of weakness, and length of additional anchors is set so that their attachment behind surface of weakness is provided.

EFFECT: increasing reinforcement efficiency of mine working when surfaces of weakness pass through breaks of rock mass.

4 cl, 5 dwg