| 采动影响下煤层底板突水预测 |
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| 引用本文： | 任艳芳,齐庆新. 采动影响下煤层底板突水预测[J]. 辽宁工程技术大学学报(自然科学版), 2009, 0(Z1) |
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| 作者姓名： | 任艳芳 齐庆新 |
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| 作者单位： | 煤炭科学研究总院开采设计研究分院;煤炭科学研究总院科技发展部;天地科技股份有限公司开采设计事业部; |
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| 摘 要： | 为了解决传统经验公式的不足,通过FLAC3D软件建立三维数值模拟模型,并利用软件中的固流耦合功能,进行了煤层底板在采动影响下的突水预测分析。分析结果:表明在采动及承压水水压影响下,当工作面推进至64 m时,采空区底板会发生突水。导水裂隙、水流速度及方向等的动态发展受工作面采动影响明显,与岩体的破断及破断岩块再组合压实过程关系紧密。通过对比分析说明了经验公式的局限性。
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| 关 键 词： | 承压水 数值模拟 固流耦合 采动影响 |
Water inrush forecast for coal floor under influence of mining |
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| Affiliation: | (1.Coal Mining & Design Branch,China Coal Research Institute,Beijing 100013,China,2.Department of Science & Technology Development,China Coal Research Institute Beijing 100013,3.Coal Mining & Design Branch,Tiandi Science and Technology Co.,Ltd.Beijing 100013,China) |
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| Abstract: | In order to solve the defect of the traditional empirical formula,three-dimensional numerical simulation models were established through FLAC3D software and the water inrush forecast analysis for coal floor under the influence of mining was done.The result shows that under the influence of mining and water pressure the gob floor will be in water inrush after the working advanced to 64 meters.The dynamic development of water fissures,water flow speed and direction were obviously affected by the influence of ... |
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| Keywords: | confined water numerical simulation solid-fluid coupling influence of mining |
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