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METHOD OF ROOF CONTROL IN LONG FACES WITH ROOF INSECURE ROCKS
METHOD OF ROOF CONTROL IN LONG FACES WITH ROOF INSECURE ROCKS
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机译：屋面不牢固岩石的长采煤层屋面控制方法
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摘要
FIELD: mining industry, mining of mineral seams. SUBSTANCE: method consists in mutual coordination of parameters of weakening seam edge zone and support bearing force parameters at which resultant of external active load 1Q will be located from breakage face at distance larger than distance from breakage face to resultant of support resistance 1R.. It is attained due to the fact that in mining of seams with insecure rocks of roof, depth of weakening of mineral seam in front of breakage face is taken less than limit depth at which 1Q≅ 1R In this case, mineral seam bearing capacity is taken larger than weight of column of roof rocks located above zone of seam weakening and lost connection with overlaying rocks. EFFECT: reduced process of outburst in breakage face in taking measures for weakening of seam edge zone, increased efficiency of plough coal mining by selection of optimal support resistance ensuring maximum extraction of coal with insecure immediate roof. 3 dwg, 1 tbl
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机译：领域：采矿业，矿层开采。实质：该方法在于弱化煤层边缘区域的参数与支撑力参数之间的相互协调，在该参数处，外部有效载荷1 Q 的合成结果将从断裂面定位的距离大于从断裂面至断裂面的距离。支撑阻力1 R 的结果。之所以如此，是因为在开采具有不安全屋顶岩石的煤层时，将破碎面前的矿物煤层的弱化深度取为小于极限深度。在其中1 Q ＆cong; 1 R 在这种情况下，矿层的承载力要大于位于煤层弱化区域并与上覆岩石失去联系的顶板岩石柱的重量。效果：采取削弱煤层边缘区域的措施，减少了破碎面的突出过程，通过选择最佳的支撑阻力来提高犁煤开采的效率，从而确保在不安全的立即顶板情况下最大程度地开采煤炭。 3桶，1桶
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