| 煤炭地下气化过程中顶板岩层移动特征的研究 |
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| 引用本文： | 郑慧慧,张兴华,刘希亮.煤炭地下气化过程中顶板岩层移动特征的研究[J].岩土工程技术,2010,24(5):227-230. |
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| 作者姓名： | 郑慧慧 张兴华 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系,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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| 基金项目： | 国家自然科学基金项目 |
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| 摘 要： | 采用热弹塑性模型,运用有限元软件,对煤炭地下气化的整个过程进行模拟,得出了煤炭地下气化过程中顶板岩层不同位置处的位移,并将其结果与传统煤炭开采的结果进行对比。结果表明:煤炭地下气化和煤炭开采过程中,顶板岩层移动曲线符合负指数函数关系;煤炭气化顶板岩层下沉速度比煤炭开采下沉速度快,且垂直位移较大;离煤层顶板越近,垂直位移越大,特别是直接顶位移急剧增大。
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| 关 键 词： | 煤炭地下气化 煤炭开采 数值模拟 顶板岩层 位移 |
Research of Characteristics of Roof Strata Movement in Underground Coal Gasification Process |
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| Zheng Huihui,Zhang Xinghua,Liu Xiliang.Research of Characteristics of Roof Strata Movement in Underground Coal Gasification Process[J].Geotechnical Engineering Technique,2010,24(5):227-230. |
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| Authors: | Zheng Huihui Zhang Xinghua Liu Xiliang |
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| Institution: | Zheng Huihui Zhang Xinghua Liu Xiliang(1. Department of Architecture and Civil Engineering, Journal of Shangqiu Teachers College, Shangqiu, 476000 , Henan, China; 2. Department of Civil Engineering, Henan Polytechnic University,Jiaozuo 454003, Henan,China) |
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| Abstract: | The thermal elastic plastic model and finite element software were used to simulation the whole process of un- derground coal gasification, and obtained displacement of different positions of roof rock, then contrasted to the traditional coal mining. The results showed that： in the processing of underground coal gasification and coal mining, the roof strata movement curve consistent with a negative exponential functions the sinking speed of coal gasification roof is faster than the sinking speed of coal mining, and vertical displacement is larger; the nearer from the roof, the greater of the vertical displacement, especially the direct roof displacement increases rapidly. |
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| Keywords: | underground coal gasification coal mining numerical simulation roof strata displacement |
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