| 房柱式采空区上部煤层上行开采可行性分析 |
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| 引用本文： | 刘增平.房柱式采空区上部煤层上行开采可行性分析[J].煤矿开采,2012,17(2):38-40. |
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| 作者姓名： | 刘增平 |
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| 作者单位： | 陕北矿业韩家湾煤炭有限公司,陕西榆林,719315 |
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| 摘 要： | 韩桥湾煤矿二盘区下部2-2煤层厚度大,开采条件优越,先行采用房柱式开采完毕,使其上部1-2煤层不能按正常顺序开采。根据两煤层赋存条件(煤层厚度、层间距、层间岩性等),采用垮落开采的比值法、"三带"判别法、围岩平衡法以及上、下煤层开采的时间间隔,分析论证了1-2煤层上行开采的可行性,确认二盘区上行开采1-2煤层技术上是可行的,由此可解放上方呆滞煤量,延长矿井寿命,提高经济效益,具有重要现实意义。
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| 关 键 词： | 房柱式 采空区 上行开采 比值判别法 “三带”判别法 围岩平衡判别法 |
Feasibility of Coal Mining over Gob Room-and-pillar Mining |
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| LIU Zeng-ping.Feasibility of Coal Mining over Gob Room-and-pillar Mining[J].Coal Mining Technology,2012,17(2):38-40. |
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| Authors: | LIU Zeng-ping |
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| Affiliation: | LIU Zeng-ping(Hanjiawan Coal Co.,Ltd,Shan′bei Mining Group,Yulin 719315,China) |
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| Abstract: | 2-2 coal-seam of 2nd panel in Hanjiawan Colliery is thick and was mined by room-and-pillar mining method,so 1-2 coal-seam could not be mined with normal sequence.Feasibility of upward mining 1-2 coal-seam was made by ratio method of caving roof method,"3-zone"discriminance,surrounding rock equilibrium method and time interval of mining upper and lower seam.Result showed that upward mining 1-2 coal-seam is feasible.It had important realistic meaning for mining coal,prolonging mine life and improving economic profit. |
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| Keywords: | room-and-pillar gob upper mining ratio judging method "3-zone"discriminance surrounding rock stability discriminance |
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