济宁三号煤矿沿空巷道侧向支承压力分布规律研究
|
摘要
为研究深部厚煤层综放沿空掘巷巷道侧向支承压力分布规律,以济宁三号煤矿123_下04工作面窄煤柱沿空掘巷巷道为工程背景,采用数值模拟、理论分析与现场实测相结合的方法对沿空巷道煤柱垂向应力进行分析研究,得出煤体和煤柱上的支承压力分布规律。结果表明,深部厚煤层综放沿空掘巷巷道侧向支承压力分布与常规支承压力分布规律一致,煤体侧支承压力峰值为40 MPa,峰值距煤壁5.7 m,支承压力影响范围为27～32 m,煤柱上的支承压力峰值为35.5 MPa。研究为深部厚煤层综放沿空掘巷时巷道的开掘和支护提供理论依据,并为相似开采条件下的矿山生产提供参考。
To study the lateral abutment pressure distribution regularity of coal pillar of gob-side entry driving in the deep-thick coal seam,taking the roadway in gob-side entry driving of the narrow coal pillar on No.04 working face of the lower part of 3~# coal seam of No.12 mining area in Jining No.3 coal mine as the engineering background, the vertical stress of coal pillar of gob-side entry driving is studied by means of numerical simulation, theoretical analysis and field testing. And the abutment pressure distribution regularity of coal and coal pillar have been concluded. The results show that the abutment pressure distribution of coal pillar of gob-side entry driving in the deep-thick coal seam is consistent with the normal one. The peak pressure of coal side abutment pressure is 40 MPa. The peak value is 5.7 m from the coal wall with influence scope of 27～32 m. The peak abutment pressure of coal pillar is 35.5 MPa. The research provides a theoretical basis for the excavation and support of the roadway in gob-side entry driving of deep-thick coal seam, and provides reference for mine production under similar mining conditions.
To study the lateral abutment pressure distribution regularity of coal pillar of gob-side entry driving in the deep-thick coal seam,taking the roadway in gob-side entry driving of the narrow coal pillar on No.04 working face of the lower part of 3~# coal seam of No.12 mining area in Jining No.3 coal mine as the engineering background, the vertical stress of coal pillar of gob-side entry driving is studied by means of numerical simulation, theoretical analysis and field testing. And the abutment pressure distribution regularity of coal and coal pillar have been concluded. The results show that the abutment pressure distribution of coal pillar of gob-side entry driving in the deep-thick coal seam is consistent with the normal one. The peak pressure of coal side abutment pressure is 40 MPa. The peak value is 5.7 m from the coal wall with influence scope of 27～32 m. The peak abutment pressure of coal pillar is 35.5 MPa. The research provides a theoretical basis for the excavation and support of the roadway in gob-side entry driving of deep-thick coal seam, and provides reference for mine production under similar mining conditions.
引文
[1] 刘金海,姜福兴,王乃国,等.深井特厚煤层综放工作面支承压力分布特征的实测研究[J].煤炭学报,2011,5(36)(S1):18-22.
[2] 任艳芳,宁宇.浅埋煤层长壁开采超前支承压力变化特征[J].煤炭学报,2014,39(S1):38-42.
[3] 王书文,毛德兵,潘俊锋,等.采空区侧向支承压力演化及微震活动全过程实测研究[J].煤炭学报,2015,40(12) :2772-2779.
[4] 王宏伟,姜耀东,邓保平,等.工作面动压影响下老窑破坏区煤柱应力状态研究[J].岩石力学与工程学报,2014,33(10):2056-2063.
[5] 李小军,李怀珍,袁瑞甫.倾角变化对回采工作面区段煤柱应力分布的影响[J].煤炭学报,2012,37(8):1270-1274.
[6] 赵鹏,谢凌志,熊伦.无煤柱开采条件下煤岩体支承压力的数值模拟[J].煤炭学报,2011,36(12):2029-2034.
[7] 刘杰,王恩元,赵恩来,等.深部工作面采动应力场分布变化规律实测研究[J].采矿与安全工程学报,2014,31(1):60-65.
[8] 孙少龙,孙小杨,王源.深埋大采高综放采场超前支承压力分布规律[J].中国煤炭,2015(8):45-48+107.
[9] 高阳,张庆松,徐帮树,等.海底采煤顶板支承压力分布规律与影响因素研究[J].岩土力学,2010,31(4):1309-1313.
[10] 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,2015.
[11] 马平原.东怀煤矿沿空掘巷小煤柱合理宽度及支护技术研究[D].湖南科技大学,2014.
[2] 任艳芳,宁宇.浅埋煤层长壁开采超前支承压力变化特征[J].煤炭学报,2014,39(S1):38-42.
[3] 王书文,毛德兵,潘俊锋,等.采空区侧向支承压力演化及微震活动全过程实测研究[J].煤炭学报,2015,40(12) :2772-2779.
[4] 王宏伟,姜耀东,邓保平,等.工作面动压影响下老窑破坏区煤柱应力状态研究[J].岩石力学与工程学报,2014,33(10):2056-2063.
[5] 李小军,李怀珍,袁瑞甫.倾角变化对回采工作面区段煤柱应力分布的影响[J].煤炭学报,2012,37(8):1270-1274.
[6] 赵鹏,谢凌志,熊伦.无煤柱开采条件下煤岩体支承压力的数值模拟[J].煤炭学报,2011,36(12):2029-2034.
[7] 刘杰,王恩元,赵恩来,等.深部工作面采动应力场分布变化规律实测研究[J].采矿与安全工程学报,2014,31(1):60-65.
[8] 孙少龙,孙小杨,王源.深埋大采高综放采场超前支承压力分布规律[J].中国煤炭,2015(8):45-48+107.
[9] 高阳,张庆松,徐帮树,等.海底采煤顶板支承压力分布规律与影响因素研究[J].岩土力学,2010,31(4):1309-1313.
[10] 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,2015.
[11] 马平原.东怀煤矿沿空掘巷小煤柱合理宽度及支护技术研究[D].湖南科技大学,2014.
© 2004-2018 中国地质图书馆版权所有 京ICP备05064691号 京公网安备11010802017129号 地址：北京市海淀区学院路29号 邮编：100083 电话：办公室：(+86 10)66554848；文献借阅、咨询服务、科技查新：66554700 |