地堑区域孤岛掘进工作面爆破断顶技术及效果检验研究

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中图分类号：TD67 文献标志码：A 文章编号：2095-2945（2025）28-0168-04

Abstract：InviewoftherockburstproblemfacedbyGaozhuangCoalIndustryNo.113andNo.O5workingface，basedon thegrabenstructureandthespecialgeologicalconditionsoftheisolatedislandworkingface，atechnicalplanforroof presplitinglastingtopreventandcontrolrockburstisproposed.Byanalyzingtheblastingmechanismofgoaf，grabenstructure andhardrof，andbasedonthetheoryofthejointactionofstress waveandhigh-pressuregas，a blasting planwas designed， andtechnicalparameterssuchasholedepth，holediameter，chargechargeandholesealinglengthwereoptimized.The applicatioresultsshowthatafterblastingtheamountofdrillcutingsissignificantlyreduced，andthefrequencyandeergyof microearthquakes are reduced byabout 3O% and 40% ，which effectively reduces stress concentration in the working face area andimprovesthestabilityofthegoaf.Theinnovationoftheresearchliesinoptimizingblastingparametersandimprovingthe efficiency and safety of rock burst prevention and control.

Keywords：isolated island;mining face;rock burst;blasting roof breaking;effect test

随着煤矿开采深度的增加，冲击地压已成为影响矿山安全的重要因素，尤其在地堑构造和孤岛工作面等复杂地质条件下，冲击地压的发生频繁，严重威胁矿井安全。（剩余5667字）