CLAMPING ANCHOR SUPPORT OF MINE WORKINGS Russian patent published in 2020 - IPC E21D11/14 

FIELD: mining.

SUBSTANCE: invention relates to a method of installing an anchor mine development anchor, intended for attachment of both horizontal and inclined development workings, and rifled openings of any shape and cross-section, different purpose and service life, both newly carried out and previously passed. According to method anchors, tensioners, flexible rope grips and tightening are installed, which support uncovered surface of mine working roof. At that, in order to increase load-bearing capacity of the support and to improve its working characteristics in compliance mode, tensioning devices are installed on the threaded ends of the anchors protruding into the opening and fixed with nuts, and flexible grippers, pressing the lug from timber to the mine working roof, are suspended on traction devices rods. To ensure a reliable fixing of roof bolting maximum shrink tension force of the flexible pickup (T_max) has to be correlated with a load capacity of the anchor (R_anch) according to the following condition: T_max ≤ R_anch⋅cosα, where: T_max is maximum tension force of the flexible pickup, kN, R_anch is bearing capacity of the anchor, kN, α - anchors angle setting, deg.

EFFECT: provision of reliable fixation of tightening anchor support.

1 cl, 4 dwg