| 远程下保护层开采煤岩体卸荷效应模拟研究 |
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| 引用本文： | 刘宝安,涂敏.远程下保护层开采煤岩体卸荷效应模拟研究[J].煤炭技术,2006,25(5):40-43. |
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| 作者姓名： | 刘宝安 涂敏 |
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| 作者单位： | 安徽理工大学,资源开发与管理工程系,安徽,淮南,232001 |
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| 基金项目： | 安徽省教育厅自然科学基金 |
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| 摘 要： | 采用FLAC4.02D有限元数值模拟研究方法,对煤层下保护层开采卸压效应进行了模拟研究。模拟结果表明:下保护层开采可显著降低高应力难采煤层的采动应力水平,同时下保护层开采后上覆煤岩层产生采动裂隙,从而增大煤层透气性,创造煤气共采的条件,对于瓦斯治理有着重要而深远的意义。
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| 关 键 词： | 远程 卸压 保护层 数值模拟 |
| 文章编号： | 1008-8725(2006)05-0040-03 |
| 修稿时间： | 2006年3月15日 |
Numerical Simulation Study on Effects of Overlying Rock and Seam Far Way From Protective Coal Seam |
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| LIU Bao-an,Tu Min.Numerical Simulation Study on Effects of Overlying Rock and Seam Far Way From Protective Coal Seam[J].Coal Technology,2006,25(5):40-43. |
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| Authors: | LIU Bao-an Tu Min |
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| Abstract: | Based on FLAC 4.0~(2D) finite element numerical simulation,it has proved that the pressure of overlying coal seam far away from the protective seam can be completely relaxed after the protective seam has been mined out.As can been seen from the result of the simulation,mining-induced fissure was caused,which consequently helps to control the drainage of gas and plays a vital role in mining safety,today and in the years to come. |
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| Keywords: | far away pressure-relaxing protective seam numerical simulation |
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