| 斜交高位钻孔抽采空区瓦斯设计及优化研究 |
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| 引用本文： | 杨明,;闫潮,;刘亚军. 斜交高位钻孔抽采空区瓦斯设计及优化研究[J]. 中国安全生产科学技术, 2014, 0(7): 117-122 |
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| 作者姓名： | 杨明, 闫潮, 刘亚军 |
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| 作者单位： | [1]河南省瓦斯地质与瓦斯治理重点实验室——省部共建国家重点实验室培育基地,河南焦作454003; [2]河南理工大学安全科学与工程学院,河南焦作454003 |
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| 基金项目： | 国家自然科学基金项目（51174079）;高等学校博士学科点博导类专项科研基金项目（20104116110001）;教育部创新团队与发展计划项目（ IRT1235）;河南省瓦斯地质与瓦斯治理重点实验室-省部共建国家重点实验室培育基地开放基金项目（WS2012A07） |
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| 摘 要： | 为了得到斜交高位钻孔最佳抽采效果,利用Fluent软件模拟斜交高位钻孔仰角分别为20°、30°和35°时采空区瓦斯浓度分布,分析钻孔仰角为30°,夹角为15°、25°、35°、45°时钻孔抽采情况。结果表明:斜交高位钻孔仰角为30°,夹角为25°时钻孔抽采纯量为2.12m3/min,抽采纯量最大,钻孔抽采效果最佳。根据现场实测数据,得到斜交高位钻孔抽采效果最佳时钻孔仰角与夹角分别为30°、27°,两者结果基本一致,从而验证了数值模拟结果的正确性。
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| 关 键 词： | 斜交高位钻孔 数值模拟 仰角 夹角 瓦斯浓度 瓦斯抽采 |
Research and optimization of gas extraction in gob by skew high level boreholes |
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| Affiliation: | YANG Ming, YAN Chao, LIU Ya-jun ( 1. State Key Laboratory Cultivation Base for Gas Geology and Gas Control, Jiaozuo Henan 454003, China; 2. School of Safety Science and Engineering, Henan Polytechnic University, Jiaoztto Henan 454003, China) |
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| Abstract: | In order to obtain the optimum extracting effect of skew high level boreholes,taking the elevation angle of high level boreholes as 20°,30° and 35°,the gas distribution in gob was simulated by Fluent,and the borehole drainage situation was analyzed when the included angle of drift hole was taken as 15 ° ,25 ° ,35 ° and 45 ° ,with the elevation angle as 30°. The result showed that the extracting gas quantity was 2. 12m3/min,which was the largest when the elevation angle was 30 ° and the included angle was 25 ° . The field test data showed that the elevation angle and the included angle were 30°and 27°separately. Both of the results were basically identical,which proved the correctness of numerical simulation. |
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| Keywords: | skew high level borehole numerical simulation elevation angle included angle gas concentration gas extraction |
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