大同矿区巨厚煤层沿空掘巷小煤柱工作面围岩控制及支护优化技术研究

Study on surrounding rock control and support optimization technology of small coal pillar face in big thick coal seam mining in Datong Mining Area

同煤大唐塔山煤矿受采掘布局制约,所布置的综放工作面均为沿空掘巷工作面。工作面采用放顶煤生产工艺在实际生产过程中开采强度高,采场空间大,动压显现频繁,直接影响矿井安全生产。从塔山矿石炭系巨厚煤层沿空掘巷小煤柱工作面设计入手,介绍了巨厚煤层放顶煤工作面沿空掘巷的合理位置、支护设计、顶板动态管理的方案和经验。

Constrained by mining and driving layout,the fully-mechanized cavings of Tashan Coal Mine in Datong are working faces with gob-side entry drving.The top coal caving technology is applied in the actual production process,the mining intensity is high,the stope space is large,and the dynamic pressure appears frequently,which directly affects the mine safety production.Starting from the design of small coal pillars working faces with gob-side entry driving in thick coal seams of Carboniferous system in Tashan Coal Mine,the paper introduced the plan and experiences of reasonable position of supporting dynamic management of roof supporting for working faces with gob-side entry driving in thick coal seams.