强冲击特厚煤层掘进面前方卸压实践
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摘要
千秋煤矿21112工作面上覆坚硬巨厚砾岩层,属强冲击特厚煤层,掘进面煤体应力较高。通过在掘进面正前方实施大直径卸压钻孔和深孔卸压爆破,有效降低了掘进面前方煤体应力,保障了掘进期间的安全生产。这两项措施的合理配合应用,在21112工作面取得了良好的卸压效果。
21112 working face is overlying hard thick gravel stratum in Qianqiu Coal Mine,and the coal seam belongs to thick coal seam with large rock burst trend,the stress of coal body on driving face is high.Through the implementation of large diameter pressure-relief hole and deep-hole pressure-relief blasting in front of driving face,the stress of coal body in front of driving face was effectively reduced,the safety production during driving was also guaranteed.The comprehensive utilization of the two measures has gained good pressure-relief effects on 21112 working face.
21112 working face is overlying hard thick gravel stratum in Qianqiu Coal Mine,and the coal seam belongs to thick coal seam with large rock burst trend,the stress of coal body on driving face is high.Through the implementation of large diameter pressure-relief hole and deep-hole pressure-relief blasting in front of driving face,the stress of coal body in front of driving face was effectively reduced,the safety production during driving was also guaranteed.The comprehensive utilization of the two measures has gained good pressure-relief effects on 21112 working face.
引文
[1]史红,姜福兴.基于微地震监测的覆岩多层空间结构倾向支承压力研究[J].岩石力学与工程学报,2008,27(S1):3274-3280.
[2]宋振骐.实用矿山压力[M].徐州:中国矿业大学出版社,1988.
[3]钱鸣高,缪协兴,徐家林,等.岩层控制的关键层理论[M].徐州:中国矿业大学出版社,2000.
[4]宋振骐,卢国志,夏洪春.一种计算采场支承压力分布的新算法[J].山东科技大学学报,2006,25(3):1-4.
[5]姜福兴.采场顶板控制设计及其专家系统[M].徐州:中国矿业大学出版社,1995.
[6]姜福兴,马其华.深部长壁工作面动态支承压力极值点的求解[J].煤炭学报,2002,27(3):273-275.
[7]于正兴,姜福兴,桂兵,等.防治冲击地压的应力三向化理论研究及应用[J].煤炭科学技术,2011,39(7):1-4.
[2]宋振骐.实用矿山压力[M].徐州:中国矿业大学出版社,1988.
[3]钱鸣高,缪协兴,徐家林,等.岩层控制的关键层理论[M].徐州:中国矿业大学出版社,2000.
[4]宋振骐,卢国志,夏洪春.一种计算采场支承压力分布的新算法[J].山东科技大学学报,2006,25(3):1-4.
[5]姜福兴.采场顶板控制设计及其专家系统[M].徐州:中国矿业大学出版社,1995.
[6]姜福兴,马其华.深部长壁工作面动态支承压力极值点的求解[J].煤炭学报,2002,27(3):273-275.
[7]于正兴,姜福兴,桂兵,等.防治冲击地压的应力三向化理论研究及应用[J].煤炭科学技术,2011,39(7):1-4.
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