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METHOD FOR PREVENTION AND CONTROL OF SUDDEN ZONAL COAL AND GAS EMISSIONS

机译:突发性煤层气和瓦斯排放的防治方法

摘要

FIELD: mining.;SUBSTANCE: invention relates to a method for prevention and control of sudden zonal emissions of coal and gas from coal beds. A method for prevention and control of sudden zonal coal and gas emissions, according to which a mining area is divided into mining zones (5) by distribution of defects and corrugations in a deposit so that boundaries of mining zones are located as far as possible in axial parts of defects or corrugations. Direction of maximum stress is determined in soil along horizontal direction in mining zone (5) by a conventional test method of stress in soil. With that, when an adjacent angle between the measured direction of maximum stress in soil along the horizontal direction and a coal bed passage line is less than 45°, inlet ventilation opening (4) and ventilation opening (3) for a backward jet is located for the mining zone along the coal bed passage line. Then, strike entry driving is performed, and inlet ventilation opening (1) and ventilation opening (2) for the backward jet is located for a working face along the coal bed passage line so that there can be performed mining operations in working face (6) located along the coal bed passage line. When the adjacent angle between the measured direction of maximum stress in soil along the horizontal direction and the coal bed passage line is more than 45°, inlet ventilation opening (4) and ventilation opening (3) for a backward jet is located for the mining zone along the coal bed passage line. Then, strike entry driving is performed, and inlet ventilation opening (1) and ventilation opening (2) for the backward jet is located for a working face along the coal bed passage line. And then, strike entry driving is performed so that there can be performed mining operations in working face (6) located along coal bed inclination.;EFFECT: simplifying the method, obtaining a favourable effect of prevention of sudden emissions and reducing concentration of stress in a working face.;2 dwg
机译:技术领域本发明涉及一种用于预防和控制来自煤层的煤和天然气的区域性突然排放的方法。一种预防和控制区域性煤与气突然排放的方法,根据该方法,通过在矿床中分布缺陷和褶皱将矿区划分为矿区(5),从而在矿区边界尽可能远地定位。轴向零件的缺陷或波纹。最大应力的方向是通过常规的土壤应力测试方法在采矿区(5)中沿水平方向的土壤中确定的。这样,当测得的沿土壤水平方向的最大应力方向与煤层通道线之间的相邻角度小于45°时,就设置了用于后向射流的入口通风口(4)和通风口(3)。沿煤层通道线的采矿区。然后,进行打击进入驱动,并且沿着煤层通道线在工作面设置用于向后喷射的入口通风口(1)和通风口(2),从而可以在工作面(6)中进行开采作业。 )位于煤层通道线上。当测得的沿土壤最大应力方向沿水平方向与煤层通道线之间的相邻角度大于45°时,用于采矿的入口通风口(4)和通风口(3)就位于采矿口煤层通道线的区域。然后,进行打击进入驱动,并且沿着煤层通过线在工作面处设置用于向后喷射的入口通风口(1)和通风口(2)。然后,进行罢工进入驱动,以便在沿煤层倾斜度的工作面(6)上进行采矿作业。效果:简化了方法,获得了防止突然排放并降低应力集中的良好效果。工作面。2dwg

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