| 煤炭地下气化中工作面顶板应力分布的研究 |
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| 引用本文： | 郑慧慧,厉玲玲,刘希亮.煤炭地下气化中工作面顶板应力分布的研究[J].四川建材,2011,37(5):46-47,49. |
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| 作者姓名： | 郑慧慧 厉玲玲 刘希亮 |
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| 作者单位： | 1. 商丘师范学院建筑与土木工程学院,河南商丘,476000
2. 河南理工大学土木工程学院,河南焦作,454003 |
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| 摘 要： | 本文运用有限元软件,对煤炭地下气化和煤炭开采的整个过程进行了模拟,得出了煤炭地下气化过程中,顶板应力和应力峰值随工作面推进距离的曲线图,并将其结果与传统煤炭开采的结果进行对比。结果表明:煤炭地下气化过程中,工作面顶板垂直应力呈指数关系,煤炭开采呈线性增长,前者应力集中系数比后者大;随着工作面的推进,两者的应力峰值距煤壁的距离和影响范围都逐渐增大;煤炭地下气化出现两次应力峰值,第一次应力峰值呈不断上升的趋势,第二次应力峰值与煤炭开采中有相同的变化规律,有形成、发展和稳定的动态变化过程。
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| 关 键 词： | 煤炭地下气化 数值模拟 工作面顶板 应力分布 |
Numerical Simulation Research on Stress distribution of working face roof in Underground Coal Gasification Process |
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| ZHENG Huihui,LI Lingling,LIU Xiliang.Numerical Simulation Research on Stress distribution of working face roof in Underground Coal Gasification Process[J].Sichuan Building Materials,2011,37(5):46-47,49. |
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| Authors: | ZHENG Huihui LI Lingling LIU Xiliang |
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| Affiliation: | ZHENG Huihui1,LI Lingling1,LIU Xiliang2(1.Department of Architecture and Civil Engineering,Journal of Shangqiu Teachers College,Shangqiu,Henan,476000,China,2.Department of Civil Engineering,Henan Polytechnic University,Jiaozuo,Henan 454003,China) |
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| Abstract: | The finite element software was used to simulation the whole process of traditional coal mining and underground coal gasification,obtained the stress and peak stress graph of workface front as workface driving,and the results of the underground coal gasification and traditional coal mining results were compared.The results showed that: the vertical stress of working face roof in underground coal gasification process was index and the traditional coal mining was linear growth and the former stress concentrat... |
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| Keywords: | Underground coal gasification Numerical simulation working face roof Stress distribution |
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