【摘要】 为了防止多煤层开采后遗留下的多重煤柱及顶、底板矿压动力显现,基于煤峪口矿14#层的赋存和开采技术条件,经研究确定对51006巷上覆煤柱及坚硬顶板实施弱化爆破卸压技术,并计算、分析得出合理的爆破参数。更多还原

【Abstract】 For preventing the overlying coal pillar strata behaviors by multi-coal seam mining,which had mined and with the condition of No.14 coal seam in Meiyukou mine, analyzing and calculating the blasting parameters by weaken blast technique in coal pillar over the entry 51006 and the roof.更多还原