DOI: 10.11799/ce201612018
Key technology of working face permanent airtight wall based on stop line coal pillar stress distribution
WENG Xu-ze
Abstract：Post-mining permanent airtight wall is a key link for the prevention of spontaneous combustion in working face goaf and the large mined-out district. Based on the stress distribution of stopping coal pillar in the working face of Tashan Coal Mine, this paper designed a rational scheme of airtight wall considering the changes in goaf over time, optimized the wall structure and construction process, finally established a complete technology system of working face permanent airtight wall for extra-thick seam mining.
Keywords：extra-thick coal seamcomprehensively mechanized top coal caving facepost-mining airtight wallterminal coal pillarairtight wall
Publication Date：2016-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：3( 56-58 )