8204-2工作面煤炮原因及规律研究
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摘要
为了弄清煤巷工作面掘进期间煤炮产生原因和发炮机理,以山西某矿8204-2工作面回风巷为研究背景,统计了煤炮发生的频次,并分析了煤炮次数与煤柱宽度之间的关系。在此基础上,探讨了煤炮的发生主要受侧向应力变化的影响,并通过对上区段和本区段的侧向应力分布规律研究,得出煤炮的发炮规律与侧向支撑压力的变化规律有着密切的关系。研究结果表明,工作面侧向支撑压力的峰值位置、影响范围、变化曲线的张开度与一次开采厚度呈现正比例关系,而峰值大小与其呈反比例关系,工作面侧向支撑压力的分布规律与煤炮的产生息息相关。
In order to clarify the cause of the coal cannon during the excavation of the coal roadway face and the firing mechanism,the frequency of coal cannon occurrence was counted and the relationship between the frequency of coal gun occurrence and the width of coal pillar was analyzed.On this basis,the influence of lateral stress on coal gun occurrence was discussed.By studying the lateral stress distribution law of the upper section and this section,it is concluded that there is a close relationship between the blasting law of the coal cannon and the variation law of the lateral support pressure.The results show that the peak position of the lateral support pressure,the influence range,the opening of the variation curve and the thickness of the primary mining face are positive.The peak value is inversely proportional to the proportionality,and the distribution law of lateral support pressure is closely related to the occurrence of coal cannon.
In order to clarify the cause of the coal cannon during the excavation of the coal roadway face and the firing mechanism,the frequency of coal cannon occurrence was counted and the relationship between the frequency of coal gun occurrence and the width of coal pillar was analyzed.On this basis,the influence of lateral stress on coal gun occurrence was discussed.By studying the lateral stress distribution law of the upper section and this section,it is concluded that there is a close relationship between the blasting law of the coal cannon and the variation law of the lateral support pressure.The results show that the peak position of the lateral support pressure,the influence range,the opening of the variation curve and the thickness of the primary mining face are positive.The peak value is inversely proportional to the proportionality,and the distribution law of lateral support pressure is closely related to the occurrence of coal cannon.
引文
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[10] 姜耀东,潘一山,姜福兴,等.我国煤炭开采中的冲击地压机理和防治[J].煤炭学报,2014,39(2):205-213.
[11] 潘俊锋,毛德兵,蓝航,等.我国煤矿冲击地压防治技术研究现状及展望[J].煤炭科学技术,2013,41(6):21-25,41.
[12] 孙珍平,李杰.特厚煤层大采高综放面“远场”瓦斯治理技术研究[J].煤炭工程,2018,50(3):67-70.
[13] 张强,黄艳利,周楠,等.合理窄煤柱护巷采动侧向应力分布规律[J].煤矿安全,2011,42(8):175-178.
[14] 谢广祥,杨科,刘全明.综放面倾向煤柱支承压力分布规律研究[J].岩石力学与工程学报,2006(3):545-549.
[15] 秦忠诚,王同旭.深井孤岛综放面支承压力分布及其在底板中的传递规律[J].岩石力学与工程学报,2004(7):1127-1131.
[2] 钱鸣高,刘听成.矿山压力及其控制[M].北京:煤炭工业出版社,1991.
[3] 孙珍平,高召宁,孟祥瑞.渗流作用下非均匀应力场巷道围岩稳定性分析[J].煤矿安全,2013,44(1):193-196.
[4] 窦林名,何学秋.冲击矿压防治理论与技术[M].徐州:中国矿业大学出版社,2001.
[5] 齐庆新,窦林名.冲击地压理论与技术[M].徐州:中国矿业大学出版社,2008.
[6] 李学华,梁顺,姚强岭,等.冲击倾向性围岩沿空掘巷防冲控制原理及应用[J].采矿与安全工程学报,2012,29(6):751-756
[7] 柏建彪,侯朝炯.深部巷道围岩控制原理与应用研究[J].中国矿业大学学报,2006,35(2):145-148
[8] 孙珍平.基于低透气性煤层的二氧化碳爆破增透技术试验研究[J].中国煤炭,2018,44(6):118-122.
[9] 刘金海,翟明华,郭信山,等.震动场、应力场联合监测冲击地压的理论与应用[J].煤炭学报,2014,39(2):353-363.
[10] 姜耀东,潘一山,姜福兴,等.我国煤炭开采中的冲击地压机理和防治[J].煤炭学报,2014,39(2):205-213.
[11] 潘俊锋,毛德兵,蓝航,等.我国煤矿冲击地压防治技术研究现状及展望[J].煤炭科学技术,2013,41(6):21-25,41.
[12] 孙珍平,李杰.特厚煤层大采高综放面“远场”瓦斯治理技术研究[J].煤炭工程,2018,50(3):67-70.
[13] 张强,黄艳利,周楠,等.合理窄煤柱护巷采动侧向应力分布规律[J].煤矿安全,2011,42(8):175-178.
[14] 谢广祥,杨科,刘全明.综放面倾向煤柱支承压力分布规律研究[J].岩石力学与工程学报,2006(3):545-549.
[15] 秦忠诚,王同旭.深井孤岛综放面支承压力分布及其在底板中的传递规律[J].岩石力学与工程学报,2004(7):1127-1131.