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| 松软厚煤层回采工作面前方煤体不同分层应力变化特征的数值模拟 | |
| 引用本文： | 赵春孝,张瑞林,陈建伟.松软厚煤层回采工作面前方煤体不同分层应力变化特征的数值模拟[J].煤,2011,20(1). |
| 作者姓名： | 赵春孝 张瑞林 陈建伟 |
| 作者单位： | 1. 河南理工大学,河南,焦作,454003;平煤建工集团有限公司,河南,平顶山,467000 2. 河南理工大学,河南,焦作,454003 3. 河南煤化集团,焦煤公司,河南,焦作,454000 |
| 摘 要： | 应用ANSYS软件建立了松软厚煤层回采工作面前方煤体力学几何模型,分析了沿回采方向煤体顶、底分层的水平、垂直和剪切应力变化特征及其差异性;并通过与我国煤矿常见煤岩抗压、抗剪强度特征的对比分析,分别探讨了煤体不同分层应力变化特征对其破坏裂隙程度的影响。所得结论可指导针对松软厚煤层回采工作面前方不同距离、不同分层煤体制定有效、可行的"卸压增透"技术措施,并为进一步探讨松软低透气性厚煤层瓦斯抽采理论提供新的思路和方法。 |
| 关 键 词： | 松软厚煤层 回采工作面 分层 应力分布 数值模拟 |
The Numerical Simulation of the variation Characteristics of the Stress Distribution at Different Layers within the Soft Thick Coal Seam in front of A Mining Face |
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| ZHAO Chun-xiao,ZHANG Rui-lin,CHEN Jian-wei.The Numerical Simulation of the variation Characteristics of the Stress Distribution at Different Layers within the Soft Thick Coal Seam in front of A Mining Face[J].Coal,2011,20(1). | |
| Authors: | ZHAO Chun-xiao ZHANG Rui-lin CHEN Jian-wei |
| Affiliation: | ZHAO Chun-xiao1,2,ZHANG Rui-lin1,CHEN Jian-wei3(1.Henan Polytechnic University,Jiaozuo 454003,China,2.Pingdingshan Coal Group Construction Engineering Co.Ltd.,Pingdingshan 467000,3.Henan Coalification Group Jiaozuo Coal Company,Jiaozuo 454000,China) |
| Abstract: | In this paper,a mechanical geometry model for the soft thick coal seam in front of a mining face is built using the ANSYS software.Based on the model,the characteristics of the variation and difference of the horizontal,vertical stress and shearing force at the top layer and bottom layer of the coal seam along the mining direction,are computed respectively.In addition,the calculation value of the horizontal,vertical stress and shearing force are contrasted with the resistance of the compressive and shearing... |
| Keywords: | soft thick coal seam mining face different layers stress distribution numerical simulation |
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