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METHOD TO CONTROL GAS EMISSION BY DISTRICT RETREATING LONGWALL HEADING WITHOUT PILLAR STOPPING
METHOD TO CONTROL GAS EMISSION BY DISTRICT RETREATING LONGWALL HEADING WITHOUT PILLAR STOPPING
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机译:无需柱顶停放的区域回撤隆首法控制气体排放的方法
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摘要
Usage: development of gas-bearing formations. SUMMARY OF THE INVENTION: Field prepare for mining excavation paired drifts. Vent next generation executed by the column is carried out at a distance of 10-20 m to produce an unsupported conveying waste column, which is isolated from the excavation by operating a jumper. After jumper pipeline connected to gazootsa- ik- installation and is performed removing a portion of the methane-air mixture gob executed by Post via goaf waste column and unsupported production conveyor in the direction of movement of the stope. 2 yl.
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