Anchor bolt of rock massif in coal mines to decrease soil rock heaving of the workings

During the maintenance of workings, effects soil rock heaving, caused by plastic deformation and extrusion into excavation cavity under action pressure, are usually eliminated. The identified patterns change in stress-strain state coal-rock massifs (displacements, stresses, cracking zones), depending on main mining-geological mining-technical factors will allow to establish optimal parameters anchoring, technological schemes for decreasing heaving mine workings increase stability preparatory have been developed. development improvement existing technologies effective safe stiffening near-soil rocks at conducting flat inclined coal seams were substantiated. modelling SSS shows that both side-rock ground deformations predominantly influenced side anchorage which results reduction surrounding working a decrease gas release from massif. It is established stresses in-soil anchors rather than ones.