【摘要】 为防治冲击地压的发生,分析了华丰煤矿四煤层发生冲击地压的内因、外因,采用深孔爆破、煤层钻孔等措施对煤层进行卸压,结合1410工作面的情况介绍了卸压参数及施工工艺,并根据微震监测结果对卸压效果进行了评价。微震监测结果及实际应用效果表明,采用深孔爆破、煤层钻孔等综合卸压技术能够从根本上改变煤岩体的应力分布状态,使应力峰值远离煤壁,减少能量的积聚,有效防治冲击地压的发生。更多还原

【Abstract】 In order to prevent and control the seam bumping occurred,the paper analyzed the inner cause and outer cause of the seam bumping from No.4 seam in Huafeng Mine.The deep borehole blasting,seam borehole and other measures were applied to the seam for the pressure releasing.In combination with the conditions of No.1410 coal mining face,the paper introduced the pressure releasing parameters and the operation technique.The pressure releasing effect was evaluated based on the micro seismic monitoring and measuring results.The micro seismic monitoring and measuring results and the actual application effect showed that the deep borehole blasting,seam borehole and other comprehensive pressure releasing technology could be fundamentally to exchange the stress distribution status of the coal and rock mass,to keep the stress peak far from the coal wall,to reduce the energy accumulation and to effectively prevent and control the seam bumping occurred.更多还原