深部工作面冲击地压组合卸压参数优化实践研究

Parameter Optimization of Combined Pressure Relief of Rock Burst in Deep Mining Face

以园子沟煤矿首采深部1012001工作面为研究对象,提出回采期间的3种卸压措施。由于深部工作面应力环境复杂多变,为保证工作面安全开采,以原有的卸压方案为基础,对不同参数的卸压效果进行细化分析,确定更优参数;提出增大帮部卸压孔的孔深、改变底板卸压孔布置方式,以及采用水力压裂的措施进行卸压效果更好,若卸压措施无法消除冲击危险或仍旧能监测到高应力的存在,便在参数优化后的实施进一步补强卸压措施,最终确定深部工作面冲击地压组合卸压解危方案。

Taking the deep first mining face No.1012001 of Yuanzigou Mine as the research object,this paper puts forward three pressure relief measures during extraction.Because of the complex stress environment in the deep working face,based on the original pressure relief plan,we analyzed the pressure relief effect with different parameters to determine the better parameters to ensure safe mining.The study proposes that increasing the depth of pressure relief holes of sidewalls,changing the arrangement of the pressure relief holes of the floor,and adopting hydraulic fracturing have better pressure relief effects.If the pressure relief measures cannot eliminate the burst risk or the high stress can still be detected,it is necessary to further reinforce the pressure relief after the parameter optimization,and finally determine the combined pressure relief plan for rock burst in the deep mining face.