浅埋深厚煤层覆岩运动规律研究
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摘要
为了深入了解浅埋深厚煤层开采的覆岩运动规律,采用现场实测等手段对阳湾沟煤矿6204工作面覆岩运动规律进行了详细的研究,结果表明:阳湾沟煤矿导水裂隙带高度为97m,为采厚的12. 12倍,垮落带高度为22m,为采厚的2. 75倍;采空区的中间测点下沉量大于周边的下沉量,中间下沉速度较快,在整体的形式上表达出对称方式;阳湾沟煤矿在较窄工作面地表的启动距为78m,大约为埋深的0. 45倍左右,启动距偏大;工作面上方不能形成"竖三带",而只能形成冒落带和裂隙带的"两带"结构形式。
In order to understand overlying strata movement law of shallow-buried deep coal seam,in this paper,field measurement was carried in 6204 working face of Yangwangou Coal Mine,the results show that: the height of water-conducting fissure zone is 97 m,which was 12. 12 times of mining thickness,and the caving zone height was 22 m,2. 75 times of mining thickness; subsidence at the goaf center was greater than that of the measuring points around,which also sank faster,showed the symmetry in the overall form; in Yangwangou Coal Mine,the starting distance was relatively large,reaching 78 m,at the surface above narrow face of coal mine,which was about 0. 45 times of the buried depth; the two-zone( caving zone and fissure zone) rather than"vertical three-zone"were formed,above the working face.
In order to understand overlying strata movement law of shallow-buried deep coal seam,in this paper,field measurement was carried in 6204 working face of Yangwangou Coal Mine,the results show that: the height of water-conducting fissure zone is 97 m,which was 12. 12 times of mining thickness,and the caving zone height was 22 m,2. 75 times of mining thickness; subsidence at the goaf center was greater than that of the measuring points around,which also sank faster,showed the symmetry in the overall form; in Yangwangou Coal Mine,the starting distance was relatively large,reaching 78 m,at the surface above narrow face of coal mine,which was about 0. 45 times of the buried depth; the two-zone( caving zone and fissure zone) rather than"vertical three-zone"were formed,above the working face.
引文
[1]李化敏,张群磊,刘闯,等.特厚煤层大采高开采覆岩运动与矿压显现特征分析[J].煤炭科学技术,2017,45(1):27-32.
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[3]刘全明,于雷.浅埋深综放采场覆岩结构对矿压显现规律的影响[J].煤炭科学技术,2017,45(3):20-24.
[4]石平五,侯忠杰.神府浅埋煤层顶板破断运动规律[J].西安矿业学院学报,1996,16(3):201-205.
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[8]谢胜华,侯忠杰.浅埋煤层组合关键层失稳临界突变分析[J].矿山压力与顶板管理,2002,6(1):67-69.
[9]李刚,梁冰,李凤仪.浅埋煤层厚积砂薄基岩顶板破断机理研究[J].中国矿业,2011,14(8):82-83.
[10]许家林,蔡东,傅昆岚.邻近松散承压含水层开采工作面压架机理与防治[J].煤炭学报,2007,32(12):1239-1243.
[11]钱鸣高,石平五,许家林.矿山压力与岩层控制[M].徐州:中国矿业大学出版社,2001.
[2]王家臣.厚煤层开采理论与技术[M].北京:冶金工业出版社,2009.
[3]刘全明,于雷.浅埋深综放采场覆岩结构对矿压显现规律的影响[J].煤炭科学技术,2017,45(3):20-24.
[4]石平五,侯忠杰.神府浅埋煤层顶板破断运动规律[J].西安矿业学院学报,1996,16(3):201-205.
[5]张俊云,侯忠杰,田瑞云,等.浅埋采场矿压及覆岩破断规律[J].矿山压力与顶板管理,1998(3):9-12.
[6]侯忠杰.浅埋煤层关键层研究[J].煤炭学报,1999,24(4):359-363.
[7]侯忠杰.地表厚松散层浅埋煤层组合关键层的稳定性分析[J].煤炭学报,2000,25(2):127-131.
[8]谢胜华,侯忠杰.浅埋煤层组合关键层失稳临界突变分析[J].矿山压力与顶板管理,2002,6(1):67-69.
[9]李刚,梁冰,李凤仪.浅埋煤层厚积砂薄基岩顶板破断机理研究[J].中国矿业,2011,14(8):82-83.
[10]许家林,蔡东,傅昆岚.邻近松散承压含水层开采工作面压架机理与防治[J].煤炭学报,2007,32(12):1239-1243.
[11]钱鸣高,石平五,许家林.矿山压力与岩层控制[M].徐州:中国矿业大学出版社,2001.