矿业安全与环保
礦業安全與環保
광업안전여배보
MINING SAFETY & ENVIRONMENTAL PROTECTION
2014年
3期
95-98
,共4页
孤岛工作面%冲击地压%综合防治
孤島工作麵%遲擊地壓%綜閤防治
고도공작면%충격지압%종합방치
isolated island working face%rock burst%comprehensive control
跃进煤矿煤层具有强冲击倾向性。由于采区开采顺序不合理,致使该矿23070工作面形成孤岛开采,又因埋深较大,工作面上覆巨厚砾岩,掘进过程中发生冲击地压的危险性增大。在分析冲击危险性基础上,借助电磁辐射和微震监测进行有效预测预警,并采取了煤层注水、钻孔卸压、爆破卸压等冲击地压防治措施,实现了工作面安全顺利回采,取得了良好的经济和社会效益。
躍進煤礦煤層具有彊遲擊傾嚮性。由于採區開採順序不閤理,緻使該礦23070工作麵形成孤島開採,又因埋深較大,工作麵上覆巨厚礫巖,掘進過程中髮生遲擊地壓的危險性增大。在分析遲擊危險性基礎上,藉助電磁輻射和微震鑑測進行有效預測預警,併採取瞭煤層註水、鑽孔卸壓、爆破卸壓等遲擊地壓防治措施,實現瞭工作麵安全順利迴採,取得瞭良好的經濟和社會效益。
약진매광매층구유강충격경향성。유우채구개채순서불합리,치사해광23070공작면형성고도개채,우인매심교대,공작면상복거후력암,굴진과정중발생충격지압적위험성증대。재분석충격위험성기출상,차조전자복사화미진감측진행유효예측예경,병채취료매층주수、찬공사압、폭파사압등충격지압방치조시,실현료공작면안전순리회채,취득료량호적경제화사회효익。
The coal seams in Yuejin Mine of Yima Coal Industry Group are liable to rock burst. In this mine, the unreasonable mining sequence in the mining district made 23070 working face becoming isolated island mining, in addition, the risk of rock burst increased in the excavation process due to great buried depth of the coal seams and the extra-thick conglomerate rock stratum above the working face. Based on the analysis of rock burst risk, effective prediction and early warning were carried out by means of electromagnetic radiation and micro-seismic monitoring, and by taking the preventive measures including coal seam water infusion, pressure relief by boreholes, pressure relief by blasting and so on, the safe and smooth winning of the face was realized and good social and economic benefits were obtained.