| 顺层瓦斯抽采钻孔周围煤体卸压范围和应力分布 |
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| 引用本文： | 苏高鹏. 顺层瓦斯抽采钻孔周围煤体卸压范围和应力分布[J]. 中州煤炭, 2019, 0(10): 21-24. DOI: 10.19389/j.cnki.1003-0506.2019.10.005 |
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| 作者姓名： | 苏高鹏 |
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| 作者单位： | （山西晋城无烟煤矿业集团有限责任公司 寺河煤矿，山西 晋城 048205） |
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| 摘 要： | 为了研究顺层瓦斯抽采钻孔周围煤体卸压范围和应力分布，采用理论分析和数值模拟相结合的方法，理论分析了顺层钻孔煤体破坏机理，在钻孔周围形成了弹性变形区、塑性软化区和卸压破裂区以及分析了顺层钻孔煤体应力分布和位移方程；数值模拟了不同孔径下钻孔卸压范围和应力分布，得到了顺层钻孔卸压范围随孔径变化函数关系。
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| 关 键 词： | 顺层瓦斯抽采 钻孔周围煤体 卸压范围 应力分布 |
Pressure relief range and stress distribution of coal body around borehole for gas extraction along seam |
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| Su Gaopeng. Pressure relief range and stress distribution of coal body around borehole for gas extraction along seam[J]. Zhongzhou Coal, 2019, 0(10): 21-24. DOI: 10.19389/j.cnki.1003-0506.2019.10.005 |
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| Authors: | Su Gaopeng |
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| Affiliation: | （Sihe Coal Mine，Shanxi Jincheng Anthracite Coal Mining Group Co.，Ltd.，Jincheng 048205，China） |
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| Abstract: | In order to study the pressure relief range and stress distribution of coal around boreholes for gas extraction along seams，the failure mechanism of coal along seams was analyzed by combining theoretical analysis with numerical simulation.Elastic deformation zone，plastic softening zone and pressure relief fracture zone were formed around boreholes，and the stress distribution and displacement equation of coal along seams were analyzed.The pressure relief range and stress distribution of boreholes are obtained，and the function relationship between the pressure relief range and borehole diameter was obtained. |
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| Keywords: | gas extraction along seam coal body around borehole pressure relief range stress distribution |
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