煤矿开采
煤礦開採
매광개채
COAL MINING TECHNOLOGY
2014年
5期
33-35,25
,共4页
复杂条件%近距离煤层%上行开采%数值模拟
複雜條件%近距離煤層%上行開採%數值模擬
복잡조건%근거리매층%상행개채%수치모의
complex condition%close-distance coalseam%upward mining%numerical simulation
永新煤矿 A6煤层和 A6上煤层最小层间距19.8m,利用比值分析法、“三带”判别法、数理统计分析法、围岩平衡法进行上行开采可行性分析,判别 A6上煤层位于 A6煤层覆岩准平衡带及中裂隙亚带内。利用 UDEC 建立二维离散元模型,模拟分析了 A6煤层开采后覆岩运移及应力变化情况,对理论分析结论进行了验证。研究结果表明 A6上煤层可进行上行开采。
永新煤礦 A6煤層和 A6上煤層最小層間距19.8m,利用比值分析法、“三帶”判彆法、數理統計分析法、圍巖平衡法進行上行開採可行性分析,判彆 A6上煤層位于 A6煤層覆巖準平衡帶及中裂隙亞帶內。利用 UDEC 建立二維離散元模型,模擬分析瞭 A6煤層開採後覆巖運移及應力變化情況,對理論分析結論進行瞭驗證。研究結果錶明 A6上煤層可進行上行開採。
영신매광 A6매층화 A6상매층최소층간거19.8m,이용비치분석법、“삼대”판별법、수리통계분석법、위암평형법진행상행개채가행성분석,판별 A6상매층위우 A6매층복암준평형대급중렬극아대내。이용 UDEC 건립이유리산원모형,모의분석료 A6매층개채후복암운이급응력변화정황,대이론분석결론진행료험증。연구결과표명 A6상매층가진행상행개채。
The minimum distance of A6 and A6-top coalseam in Yongxin Colliery is 19. 8m. Applying ratio analysis, “3-zone” discrim-inance method, mathematical statistics and surrounding rock equilibrium method to analyzing feasibility of upward mining, it was ob-tained that A6-top coalseam lies within quasi-equilibrium zone and middle fissure zone. Surrounding rock movement and stress variation after mining A6 coalseam was simulated with UDEC software and verified theoretical analysis result. It was proved that upward mining A6 coalseam was feasible.
