山东工业技术
山東工業技術
산동공업기술
Shandong Industrial Technology
2014年
7期
87-88
,共2页
坚硬顶板%大采高%顶板预裂%数值模拟
堅硬頂闆%大採高%頂闆預裂%數值模擬
견경정판%대채고%정판예렬%수치모의
Hard roof%Large mining height%Open-off cuts pre-splitting%Numerical simulation
为研究坚硬顶板大采高条件下综采工作面悬顶面积过大的问题,以山西凌志达煤矿15101工作面为研究对象,采用数值模拟的研究方法,通过模拟15101工作面在初采时切眼不同情况下采场围岩的塑性破坏情况、垂直应力和煤壁侧支撑压力分布规律,得出切眼顶板预裂是有效可行的,为现场试验提供了指导依据。
為研究堅硬頂闆大採高條件下綜採工作麵懸頂麵積過大的問題,以山西凌誌達煤礦15101工作麵為研究對象,採用數值模擬的研究方法,通過模擬15101工作麵在初採時切眼不同情況下採場圍巖的塑性破壞情況、垂直應力和煤壁側支撐壓力分佈規律,得齣切眼頂闆預裂是有效可行的,為現場試驗提供瞭指導依據。
위연구견경정판대채고조건하종채공작면현정면적과대적문제,이산서릉지체매광15101공작면위연구대상,채용수치모의적연구방법,통과모의15101공작면재초채시절안불동정황하채장위암적소성파배정황、수직응력화매벽측지탱압력분포규률,득출절안정판예렬시유효가행적,위현장시험제공료지도의거。
In order to study the large roof overhang problems in great mining height mechanized mining face under hard roof conditions ,based on Shanxi Lingzhida mine 15101 face, used numerical simulation methods, simulated 15101 face cut in the early pre-cut mining under different plastic case stope rock damage circumstances, vertical stress and support law distribution in the coal wall side, obtained pre-cut in the roof fissure is feasible, provided guidance for the field trial basis.