| 煤层底板渗流稳定性分析 |
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| 引用本文： | 李天珍,马林,张连英.煤层底板渗流稳定性分析[J].采矿与安全工程学报,2009,26(1). |
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| 作者姓名： | 李天珍 马林 张连英 |
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| 作者单位： | 徐州工程学院,土木工程学院,江苏,徐州,221008 |
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| 基金项目： | 国家自然科学基金，教育部博士点学科专项基金，江苏省高校自然科学基础研究项目，徐州工程学院科研项目 |
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| 摘 要： | 建立了某矿21201回采工作面底板渗流的力学模型,利用RFPA计算了工作面推进到50m和100 m时的应力场,利用应力与渗透特性之间的关系计算了底板各岩层的渗透特性,并计算了底板突水因数.研究表明:1)在工作面推进过程中,煤层底板始终没有出现渗流关键层.2)岩层孔隙一直是渗流的主要通道.3)当工作面推进到50 m时,突水因数等于0.834,底板中水渗流是稳定的,不会发生突水;当工作面推进到100 m时,突水因数等于0.928,底板可能产生渗流失稳现象,即存在突水的危险性.
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| 关 键 词： | 底板 渗流 突水 渗透特性 |
Stability Analysis of the Seepage Flow of Water in the Coal Seam Floor |
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| LI Tian-zhen,MA Lin,ZHANG Lian-ying.Stability Analysis of the Seepage Flow of Water in the Coal Seam Floor[J].Journal of Mining and Safety Engineering,2009,26(1). |
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| Authors: | LI Tian-zhen MA Lin ZHANG Lian-ying |
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| Affiliation: | Civil Engineering Department;Xuzhou Institute of Technology;Xuzhou;Jiangsu 221008;China |
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| Abstract: | A dynamical model for the seepage flow in the coal seam floor of working face No.21201 in a certain coal mine is established.The software,RFPA(Rock Failure Process Analysis) is used to calculate the stress field when the working face advances to 50 m and 100 m.In addition,permeability and water burst factors of floor rocks are also calculated.The result shows that 1) No seepage-key-stratum exists in the coal seam floor,2) the pores in strata are the main channel for water to seep in the coal seam floor,3) w... |
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| Keywords: | coal seam floor seepage flow water inrush seepage properties |
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