| 摘要 |
FIELD: mining.SUBSTANCE: this method consists in development of the set of coal seams in ascending order in system "Long direction of strata" with excavation. Rock pressure is control by collapsing the roof rocks in exposed space with subsequent isolation. Note here that first the set bottom seam is mined with advance degassing and continuation of gas suction therefrom at mining of overlying undermined seams. Then, overlying seams are mined in ascending order. Note here that mine fluids are collected from the entire set of coal seams at bottom seam bottom point at its mining with the feed of aqueous solution of antipyrogenes into stripped area. After working of bottom seam advance seam degassing is terminated. Barometric pressure is maintained in worked space by discharging fluid gases from sources below the set. Note here that advance degassing in overlying seams is not used at stripping. Besides, feed of aqueous solution of antipyrogenes into stripped area is performed from bottom seam into stripped area of every of the next stripped coal seams.EFFECT: higher safety, lower costs.2 cl, 2 dwg |
