REINFORCEMENT METHOD OF MINE WORKINGS WITH ANCHOR SUPPORT Russian patent published in 2011 - IPC E21D20/00 

FIELD: mining.

SUBSTANCE: during reinforcement of mine workings with anchor support, mainly of workings of rectangular shape of cross section, first, inclined bore pits are drilled into roof of working during the process and installation of anchors in them is performed with inclination towards the working face of mine working and towards its mouth, as well as installation of anchors with inclination onto the flanks of mine working. Together with drilling of inclined bore pits into the roof of mine working there drilled are inclined bore pits into flanks of the mine working; at that, bore pits for anchors are drilled into the roof and flanks of the mine working are drilled as per the specified mine rock anchoring scheme according to which installation of inclined anchors in bore pits is performed in rows. In each of the rows the anchors inclined towards the face of the mine working and anchors inclined towards the mouth of mine working are installed in bore pits in alternating order and with observation of the condition of their location in staggered order in relation to each other in adjacent orders. At that, drilling of inclined bore pits and installation of anchors in them in each row along the outline of mine working is performed following the face through the length of process displacement of the made mine working. Anchors inclined towards the face of mine working and its mouth are installed in each row at an angle to longitudinal axis of mine working, which is equal to 65-70°, with possibility of their spatial crossing between adjacent rows of mine rocks reinforced with anchors along the outline of the mine working.

EFFECT: increasing reinforcement efficiency of mine workings and increasing labour safety.

6 dwg