煤炭工程 ›› 2015, Vol. 47 ›› Issue (9): 49-52.doi: 10.11799/ce201509017

• 施工技术 • 上一篇    下一篇

无煤柱沿空掘巷合理性判断及支护技术研究

薛维培1,李敬佩2,刘召辉2,姚直书1,经来旺3   

  1. 1. 安徽理工大学土木建筑学院
    2. 淮北矿业股份有限责任公司
    3. 安徽理工大学 矿山工程力学与支护技术研究所
  • 收稿日期:2015-02-02 修回日期:2015-03-09 出版日期:2015-09-11 发布日期:2015-10-09
  • 通讯作者: 薛维培 E-mail:471122905@qq.com

Rational Judgment and Supporting Technology Research of Completely Roadway Driving Along Goaf

  • Received:2015-02-02 Revised:2015-03-09 Online:2015-09-11 Published:2015-10-09

摘要: 以许疃煤矿8214风巷为研究对象,研究了无煤柱沿空掘巷应力分布情况和非对称矿压分布特征。首先利用数值模拟软件abaqus对无煤柱沿空掘巷应力场进行了详细分析,论证了方案的合理性;其次将其应用于现场工业性试验中,通过与地质条件相近的7212小煤柱沿空掘巷矿压监测对比,结果表明无煤柱沿空掘巷实体煤侧压力约是采空区侧1.5倍,同时与小煤柱沿空掘巷相比矿压较小,顶部压力、采空区侧压力、实体煤侧压力分别是其0.86倍、0.65倍、0.58倍;最后有针对性地提出了不对称锚架补强支护方案,监测结果显示掘进与回采阶段巷道顶底及两帮变形量分别为165.6mm、142.2mm、525.7mm、577.3mm,对井下安全生产不构成影响,支护效果显著。

关键词: 无煤柱沿空掘巷, 支护技术, 非对称矿压, 巷道变形

Abstract: The case for small coal pillars along goaf part of the coal resources can not be exploited, so in Xu Tuan 8214 wind lane completely roadway driving along goaf scheme is proposed,then,this paper through the numerical simulation demonstrates the rationality of the scheme. In order to accurately grasp the completely along goaf roadway mine pressure distribution, we arrange at the scene monitoring section and compare with the same conditions roadway driving along goaf with small coal pillar .The results found completely roadway driving along goaf exists asymmetry of mine pressure effect, stress environment is better than small coal pillars along goaf. Finally, this paper puts forward asymmetrical frame reinforcement anchor supporting structure, monitoring results show that deformation of roadway excavation and recovery phase for mine production safety does not affect, supporting effect is remarkable.

Key words: completely roadway driving along goaf, supporting technology, asymmetry mine pressure, roadway deformation

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