| 深井火成岩侵入工作面冲击矿压防治 |
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| 引用本文： | 王义然,牟宗龙,阮国强. 深井火成岩侵入工作面冲击矿压防治[J]. 煤矿开采, 2010, 15(6) |
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| 作者姓名： | 王义然 牟宗龙 阮国强 |
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| 基金项目： | 中国矿业大学科技基金(青年)资助项目，中国矿业大学煤炭资源与安全开采国家重点实验室开放研究基金项目 |
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| 摘 要： | 基于赵楼煤矿1302工作面运输巷火成岩侵入区二次底板型冲击矿压的分析,指出较高的原岩应力和底板火成岩与围岩变形不协调,使得火成岩区产生应力集中和弹性能量积聚,火成岩突然断裂导致能量突然大量释放是底板冲击的根源。通过煤体卸压爆破、底板预裂爆破可减小火成岩两翼的应力和火成岩中部所受的弯矩,可有效改变火成岩的受力状态和能量释放速率,达到控制底板冲击矿压发生的目的。
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| 关 键 词： | 深井 火成岩 冲击矿压 底板预裂爆破 |
Rock-burst Prevention and Control of Deep Mining Face Influenced by Intrusive Igneous Rock |
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| WANG Yi-ran,MOU Zong-long,RUAN Guo-qiang. Rock-burst Prevention and Control of Deep Mining Face Influenced by Intrusive Igneous Rock[J]. Coal Mining Technology, 2010, 15(6) |
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| Authors: | WANG Yi-ran MOU Zong-long RUAN Guo-qiang |
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| Abstract: | Based on the analysis of floor rock-burst influenced by intrusive igneous rock in transportation roadway of 1302 mining face in Zhaolou Colliery,the paper pointed out that higher geo-stress and deformation discordance of floor igneous rock and surrounding rock made stress concentration and elastic energy accumulation in igneous rock area.Sudden rupture of igneous rock caused energy release rapidly and induced floor rock-burst.Stress at two sides and bending moment at the middle of igneous rock might be reduced and stress state and energy relief ratio might be changed by pressure-relief blasting and floor pre-crack blasting to control floor rock-burst. |
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| Keywords: | deep mine igneous rock rock-burst floor pre-crack blasting |
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