山东煤炭科技2024，Vol.42Issue(7)：36-40,45,6.DOI:10.3969/j.issn.1005-2801.2024.07.007
特厚煤层切顶卸压小煤柱迎采掘巷技术研究
Research on Facing Mining Roadway Excavation Technology with Small Coal Pillar for Roof Cutting and Pressure Relief in Extra Thick Coal Seam
曹志勇1
作者信息
- 1. 山煤国际能源集团股份有限公司,山西 太原 030000
- 折叠
摘要
Abstract
The coal pillar retention adopted in Hanjiawa Coal Mine used to be 30 m,which seriously wasted valuable coal resources.Taking the 22401 and 22402 working faces of Hanjiawa Coal Mine as the research objects,the current situation is analyzed and scientific calculations are conducted through the application of limit equilibrium theory,it is determined to use a 6 m section small coal pillar,assisted by pre-splitting blasting and roof cutting pressure relief technology,to forcibly cut off the connection between the 22401 goaf and the adjacent working face roof,block the pressure transmission of the goaf roof,weaken the mining impact on the adjacent facing excavation roadway,strengthen the support quality of the 22402 return air crossheading and reinforcement measures for the facing mining,and ensure the facing mining safety quality of the 22402 return air crossheading under the small coal pillar,providing reference for the facing mining excavation of mines with the same type.关键词
特厚/小煤柱/切顶Key words
extra thick/small coal pillar/roof cutting分类
矿业与冶金引用本文复制引用
曹志勇..特厚煤层切顶卸压小煤柱迎采掘巷技术研究[J].山东煤炭科技,2024,42(7):36-40,45,6.
