煤炭与化工2023，Vol.46Issue(11)：1-5,5.DOI:10.19286/j.cnki.cci.2023.11.001
近距离双厚煤层变层间距条件下回采巷道布置方式研究
Study on layout of mining roadway in close distance double thick coal seams with variable layer spacing
郭伟亮 1常毛毛 1宋晓寒2
作者信息
- 1. 陕西小保当矿业有限公司,陕西榆林 719000
- 2. 中煤科工开采研究院有限公司,北京 100013||天地科技股份有限公司,北京 100013
- 折叠
摘要
Abstract
In the mining of close distance coal seams,in order to avoid the adverse stress environment caused by the mining of the upper coal seam,it is a more effective technical means to select a reasonable roadway layout.Based on the close-distance downward mining of No.6 upper coal seam and No.6 coal seam in Zhunqi Mine,the reasonable layout of mining roadway under the condition of variable layer spacing of close-distance double-thick coal seam was studied by means of numerical simulation,the law of stress conduction of interlayer coal pillar wasanalyzed,the stress environment of lower coal seam mining roadway under different layer spacing and layout modes was simulated,and the layout scheme of mining roadway in the first mining face and continuous working face of lower No.6 coal seam was designed.The roadway of the first mining face of No.6 coal seam adopted the internal staggered layout mode,and the subsequent working face adopted the translational layout mode.In order to take into account the roadway layout of the 6 coal working face under the condition of variable layer spacing,the distance of the 6 upper coal roadway on the same side of the 6 coal roadway should not be less than 30 m.关键词
近距离/双厚煤层/变层间距/应力分布/巷道布置方式/数值模拟Key words
close distance coal seams/double thick coal seam/variable layer spacing/stress distribution/roadway layout/numerical simulation分类
矿业与冶金引用本文复制引用
郭伟亮,常毛毛,宋晓寒..近距离双厚煤层变层间距条件下回采巷道布置方式研究[J].煤炭与化工,2023,46(11):1-5,5.
