MINE LINING METHOD Russian patent published in 2006 - IPC E21D20/00 E21D11/00 

FIELD: mining, particularly to support and consolidate rock.

SUBSTANCE: method involves drilling injection and drain wells; connecting bolts with support members in well bottoms; applying isolation covering on mine surface after rock shifting; injecting binding composition into rock via the injection wells to create rock-and-concrete shell around the mine; maintaining maximal binding composition pressure in injection wells free of fluid losses for half and hour; applying load to bolts in rows in direction from excavation face. Bolts fastened with powder mineral filler without support washer installation may be used. During bolt fastening in drain wells the wells are filled with mineral filler for the full length thereof and well heads are supported with filtering material. During bolt fastening in injection wells the wells are filled with mineral filler for minimal height necessary for uniform bolt fastening. The height is selected so that upper level of mineral filler is outside stable massif contour.

EFFECT: increased efficiency of rock consolidation.

2 cl, 3 dwg