| 基于煤体瓦斯含量对测定煤层瓦斯压力准确性分析 |
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| 引用本文： | 刘辉辉,蒋承林,吴爱军,牟俊惠.基于煤体瓦斯含量对测定煤层瓦斯压力准确性分析[J].煤矿开采,2011,16(1). |
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| 作者姓名： | 刘辉辉 蒋承林 吴爱军 牟俊惠 |
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| 作者单位： | 中国矿业大学,安全工程学院,江苏,徐州,221008 |
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| 基金项目： | 国家重点基础研究发展计划项目(973项目)(2006CB202204-3) |
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| 摘 要： | 基于煤体的瓦斯含量,分析了测压室长度与封孔过程中瓦斯的释放量对测压准确性的影响,并依据理想气体状态方程与煤层瓦斯含量的朗格缪尔方程,推导出原始的煤层瓦斯压力与实际测出的煤层瓦斯压力、测压室长度以及封孔过程中瓦斯释放量的表达式,对实际测得的瓦斯压力进行了修正。经计算发现,测压室长度越长,封孔过程中瓦斯释放量越多,最终测定的瓦斯压力与煤层原始瓦斯压力偏差越大,在封孔过程中应尽量减小测压室的长度,加快封孔的速度。
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| 关 键 词： | 瓦斯含量 瓦斯压力 钻孔长度 修正 |
Accuracy Analysis of Measuring Methane Pressure Based on Methane Content in Coal |
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| LIU Hui-hui,JIANG Cheng-lin,WU Ai-jun,MU Jun-hui.Accuracy Analysis of Measuring Methane Pressure Based on Methane Content in Coal[J].Coal Mining Technology,2011,16(1). |
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| Authors: | LIU Hui-hui JIANG Cheng-lin WU Ai-jun MU Jun-hui |
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| Affiliation: | LIU Hui-hui,JIANG Cheng-lin,WU Ai-jun,MU Jun-hui(Safety Engineering School,China University of Mining & Technology,Xuzhou 221008,China) |
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| Abstract: | The influence of length of pressure measurement room and methane release amount in sealing hole on measurement accuracy was analyzed on the basis of methane content in coal body.An expression of original methane pressure,measured methane pressure,length of pressure measurement room and methane release amount in sealing hole was deduced based on ideal gas state equation and Langmiur equation.Methane pressure measured was modified.Calculation showed that length of pressure measurement room was longer,release ... |
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| Keywords: | methane content methane pressure borehole length modification |
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