TIMBERING METHOD OF MINE OPENING Russian patent published in 2009 - IPC E21D20/00 

FIELD: mining.

SUBSTANCE: method includes drilling of boreholes in rows, installation into it compound anchor-grabs, pressure of grabs to surface of opening. Coupling of anchor-grabs to each other is implemented by means of angle bar with openings, implemented in its shelves, in one of which it is passed end of grab of anchor of previous row and grab is strained by means of female screw, and through the other it is installed into borehole anchor of following row. Coupling of anchors to each other in rows is implemented by grabs by means of two screws, one of which is fixed the end of grab through staple in it to anchor of previous row and it is pressed grab to surface of excavation. Tension of grabs in rows of installed anchors in cross-section of excavation is implemented separately by roofing and sides, successively stretching grabs by roofing in the direction from one angle of excavation to other, and in sides of excavation in the direction from roofing to soil.

EFFECT: effectiveness increase of excavations fixation and simplification of fastening process.

4 cl, 6 dwg