Isolated island pillar stress area roadway in dashucun mine optimization layout modification and support
Abstract：Fengfeng Jizhong energy group Dashucun mine-450m levels in former East Wing three lane in 174102,172102,and 174104 working face in 172104 working face of the protective coal pillar beneath the middle island,three lane using the anchor rope supporting in coal,local section of the use of U36 bracket plus anchor net combined support,stress concentration phenomenon is obvious,the roadway deformation destruction,although already reinforced support and repaired many times,but the roadway surrounding rock deformation is serious,cannot ensure the normal and safe use of.In the full theory and analysis of evidence after the 450m level in former East Wing three roadway layout in the 174102 and 172102 working face goaf below,is currently driving construction process,only in 172102 working face mining stopped protective coal pillar stress concentration range below the roadway surrounding rock deformation is more serious,the repair and reinforcement after supporting the roadway,basically stable,the other position roadway stability.
Keywords：isolated coal pillarstress concentrated arearoadway layout optimizationroadway support
Publication Date：2011-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：4( 10-13 )