| 综采工作面缩面前后采空区瓦斯分布规律对比分析 |
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| 引用本文： | 葛 林,陈 超.综采工作面缩面前后采空区瓦斯分布规律对比分析[J].中州煤炭,2018,0(10):211-215. |
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| 作者姓名： | 葛 林 陈 超 |
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| 作者单位： | （河南能化集团 永煤公司城郊煤矿，河南 永城 476600） |
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| 摘 要： | 通过对22006工作面采空区瓦斯分布进行研究，可以掌握采空区内瓦斯分布规律，为采空区瓦斯治理提供合理的措施与措施施工参数。数值模拟分析结果表明:回风隅角瓦斯浓度数值模拟结果最高为0.065%，与实测工作面回风隅角瓦斯浓度0.063%相吻合，验证了数值模拟的可靠性；缩面前工作面向采空区的漏风量比缩面后工作面向采空区漏风量大；缩面后采空区瓦斯浓度高于缩面前采空区瓦斯浓度；缩面前回风隅角瓦斯浓度高于缩面后回风隅角瓦斯浓度，并且缩面后回风隅角瓦斯浓度最高为0.06%，远低于国家安全规程规定的1%上限。
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| 关 键 词： | 数值模拟 采空区瓦斯分布 缩面 回风隅角瓦斯分布 漏风 |
Comparison and analysis on laws of gas distribution in goaf before and after face shrinking of fully-mechanized working face |
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| Ge Lin,Chen Chao. Comparison and analysis on laws of gas distribution in goaf before and after face shrinking of fully-mechanized working face[J].Zhongzhou Coal,2018,0(10):211-215. |
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| Authors: | Ge Lin Chen Chao |
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| Affiliation: | （Chengjiao Coal Mine，Yongcheng Coal Company，Henan Energy and Chemical Group Co.，Ltd.，Yongcheng 476600，China） |
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| Abstract: | By studying the gas distribution in the goaf of the 22006 working face，we can grasp the gas distribution rule in the goaf，and provide reasonable measures and measures for the gas control in the goaf.Through numerical simulation，the results show that the upper corner gas concentration of numerical simulation results of up to 0.065%，which is in agreement with the measured working face upper corner gas concentration 0.063%，thus verify the reliability of this numerical simulation；before face shrinking，the air leakage quantity is larger than that the shrinking working face；goaf gas concentration is higher than the shrinking working face；the gas concentration at upper corner is higher than the shrinking working face，and the gas concentration of corner is up to 0.06% after the shrinking，far lower than the provisions of the state safety regulations 1% limit. |
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| Keywords: | ,numerical simulation, gas distribution in goaf, shrinkage face, gas distribution at corner of return air, ventilation leakage |
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