石嘴山矿区被保护厚煤层巷道布置研究
Study on the roadway layout in the protected thick seam of Shizuishan mining field
-
摘要: 文章阐述了近距离煤层群中有突出危险煤层上保护层区段煤柱,对被保护煤层采面布置的影响,提出了减小保护层区段煤柱的途径。Abstract: The paper expounds the influence of rib pillars in the upper protecting burst prone coal seam of close range seams on the layout of mining faces in the lower protected seam, presents the path to reduce the pillar sizes
下载: