METHOD FOR BEDDED DEPOSIT DEVELOPMENT WITH HEADING-AND-STALL METHOD

摘要

FIELD: mining, particularly methods of underground mining for brown or hard coal.;SUBSTANCE: method involves dividing working area into panels by excavating panel mining, belt and ventilation entries and inclines; performing of advance upper bed mining and retreat lower bed mining; connecting mining entries at different deposit beds with inclines. Belt entries are formed only in lower bed. Mining and ventilation entries made in upper bed are shifted with respect to corresponding lower bed entries for distance equal to half of panel width. As second working fronts of lower and upper beds cross each other excavation of upper beam semi-panel superposed with working panel of lower bed in plan view is stopped up to time of second working front of lower bed moving-off along with lower bed cutting continuing. Upper bed excavation is continued as the second working front of lower bed reaches distance of not less than 0.2 of lower bed depth. Ore is conveyed from upper bed and filling material is supplied to goaf via belt and mining entries formed in excavated adjacent panel correspondingly. Ore from mining entry of upper bed is conveyed to that of lower bed along periodically passable inclines and from mining entry of lower bed to belt entry via ore passes, wherein ore conveyance is began from ore excavated from upper bed. After chamber mining and new incline cutting filling material for mined-out upper bed chamber filling is conveyed. Ore produced from upper bed may be transported by means of conveyer installed in mined-out lower bed chamber. Ore is transferred from mining entry of upper bed to conveyer and in belt entry of mined-out panel via ore passes. Inclines may be arranged transversely to panel entries.;EFFECT: decreased volume of preparatory work and increased cutting rate.;4 cl, 2 dwg