| 主动测压法测定煤层瓦斯压力中补偿气体的选择 |
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| 引用本文： | 张兵兵,杨胜强,鹿存荣,张少帅,王大强.主动测压法测定煤层瓦斯压力中补偿气体的选择[J].煤炭科学技术,2011,39(10):62-64. |
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| 作者姓名： | 张兵兵 杨胜强 鹿存荣 张少帅 王大强 |
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| 作者单位： | 1. 中国矿业大学安全工程学院,江苏徐州,221008
2. 中国矿业大学安全工程学院,江苏徐州221008／中国矿业大学煤炭资源与安全开采国家重点实验室,江苏徐州221008 |
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| 基金项目： | 国家自然科学基金重点资助项目(50834005); 国际科技合作资助项目(2008DFB70100) |
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| 摘 要： | 为选择合适的气体作为主动测压法测定钻孔煤层瓦斯压力中的补偿气体,从煤对CH4、CO2和N2的吸附性研究入手,证实了煤层对CH4和N2的吸附-解吸是可逆的,而对CO2的吸附解吸是不可逆的,并分析了CO2作为补偿气体对CH4的吸附-解吸平衡产生的影响,最终提出了N2更适合作为补偿气体。通过现场实践表明：CO2作为补偿气体测得的瓦斯压力存在一定的误差,误差可达0.05～0.20 MPa,而N2作为补偿气体时误差较小,能够较准确测得煤层原始瓦斯压力。
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| 关 键 词： | 主动测压法 煤层瓦斯压力 补偿气体 吸附-解吸特性 |
Selection of Supplement Gas for Active Pressure Measuring Method to Measure Gas Pressure of Seam |
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| ZHANG Bing-bing,YANG Sheng-qiang,LU Cun-rong,ZHANG Shao-shuai,WANG Da-qiang.Selection of Supplement Gas for Active Pressure Measuring Method to Measure Gas Pressure of Seam[J].Coal Science and Technology,2011,39(10):62-64. |
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| Authors: | ZHANG Bing-bing YANG Sheng-qiang LU Cun-rong ZHANG Shao-shuai WANG Da-qiang |
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| Affiliation: | ZHANG Bing-bing1,YANG Sheng-qiang1,2,LU Cun-rong1,ZHANG Shao-shuai1,WANG Da-qiang1(1.School of Safety Engineering,China University of Mining and Technology,Xuzhou 221008,China,2.State Key Lab of Coal Resources and Safety Mining,China) |
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| Abstract: | In order to select suitable gas for the active pressure measuring method to measure the compensation gas in the gas pressure of the borehole seam,from the study on the Absorbability of CH4,CO2 and N2 to the seam,the adsorption-desorption of CH4 and N2 to the seam was reversible and the adsorption-desorption of CO2 was irreversible.The paper analyzed that the CO2 as the compensation gas would influence the adsorption-desorption balance of the CH4.Finally,N2 was provided as the suitable gas as the compensatio... |
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| Keywords: | active pressure measuring method gas pressure of seam supplement gas adsorption-desorption characteristic |
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