METHOD FOR DEVELOPMENT OF THICK GENTLY SLOPING METHANE-HAZARDOUS FORMATIONS Russian patent published in 2025 - IPC E21C41/18 E21F7/00 E21F15/08 E21D9/00 

FIELD: mining.

SUBSTANCE: invention relates to mining and may be used in underground mining of minerals by mechanized complexes with mined-out space stowing. Method development of thick gently sloping methane-hazardous coal beds comprises the following actions. Coal is excavated along the spread by the cutter-loader of the mechanized complex of the upper layer by the value of the cutter-loader working tool, the support sections of the mechanized complex of the upper layer are moved with simultaneous retraction by jacks of goaf enclosures installed at the base of the support sections towards the worked-out area. Coal excavation by the lower layer mechanized complex combine, at that, the mining contour separation from the mined space by the goaf enclosures, movement after extraction of coal of goaf enclosures together with sections of support of mechanized complex of lower layer to the face and again extraction of coal by combine of mechanized complex of upper layer. In mechanized system of the upper layer, support sections with coverings of the supporting type are used, and in the mechanized complex of the lower layer, support sections with coverings of the enclosing type are used. Simultaneously with extraction of coal in layers, filling material is supplied through a pipe suspended on rear aprons of ceilings of supporting type of support sections of mechanized complex of upper layer. Angle of natural slope is formed by goaf enclosures installed at the base of the support sections of the mechanized complex of the upper layer, and by ceilings of enclosing type of the support sections of the mechanized complex of the lower layer. Methane-air mixture is displaced by filling material from the mined space to the mine working circuit. Directing the methane-air mixture flow from the lower layer to the upper layer by the excess air pressure created on the soil of the lower layer. Methane-air mixture is removed through funnels and receiving cavities and then through intermediate cavities located in the upper layer mechanized complex powered support sections supporting type front shields and coverings of the upper layer. Intermediate cavities in front aprons are connected to intermediate cavities in ceilings of supporting type by means of corrugated branch pipes. Receiving cavities and intermediate cavities in front shields and coverings of supporting type of support sections of mechanized system of upper layer are connected to each other and with main cavity in ceilings of supporting sections of mechanized complex of upper layer at sharp angles of branching towards removal of methane-air mixture.

EFFECT: higher efficiency of mining operations.

1 cl, 4 dwg