| 地勘取芯过程中煤的瓦斯解吸规律研究 |
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| 引用本文： | 秦玉金. 地勘取芯过程中煤的瓦斯解吸规律研究[J]. 山东科技大学学报(自然科学版), 2011, 30(5) |
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| 作者姓名： | 秦玉金 |
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| 作者单位： | [1]辽宁工程技术大学安全科学与工程学院,辽宁阜新123000;[2]煤炭科学研究总院沈阳研究院,辽宁沈阳110016 |
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| 基金项目： | 国家重点基础研究发展计划(“973”计划)项目(2011CB201206) |
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| 摘 要： | 利用地勘取芯过程煤样瓦斯解吸模拟装置,研究了泥浆介质中煤的瓦斯解吸规律,针对瓦斯压力、泥浆压力、提钻速度及煤样粒度等因素进行了一系列煤的瓦斯解吸模拟实验,得出了地勘取芯提钻过程中煤芯瓦斯解吸的初始条件(0.01MPa≤Pmud-PCH4≤0.15MPa)、不同影响因素与瓦斯解吸的关系及非等压过程泥浆介质条件下煤芯瓦斯解吸特征。实验表明,在非等压过程泥浆介质条件下煤的瓦斯解吸曲线呈现出类宽缓型S形态或类双曲正切函数thx=(ex-e-x)/(ex+e-x)形状。
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| 关 键 词： | 地勘取芯 瓦斯含量 泥浆介质 非等压解吸 |
Desorption Regularity of Gas in Coal in the Process of Exploration Coring |
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| QIN Yujin. Desorption Regularity of Gas in Coal in the Process of Exploration Coring[J]. Journal of Shandong Univ of Sci and Technol: Nat Sci, 2011, 30(5) |
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| Authors: | QIN Yujin |
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| Affiliation: | QIN Yujin1,2 (1.College of Safety Science&Engineering,Liaoning University of Engineering Technology,Fuxin,Liaoning 123000,China,2.Shenyang Branch of the Central Coal Mining Research Institute,Shenyang,Liaoning 110016,China) |
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| Abstract: | The desorption regularity of gas in coal of slurry medium was studied by means of the simulation device of gas desorption in the process of exploration coring. A series of experiments on gas desorption simulation were con- ducted according to such factors as gas pressures, slurry pressures, velocities of rod-lifting and sizes of coal samples, obtaining the initial conditions of 0.01MPa≤Pmad--Pc44≤0.15MPa for gas desorption in the process of exploration coring,the relationship between different influencing factors and gas desorption,and the gas desorption features in coal cores under the condition of non-isobaric slurry medium. The experiment showed that the curves of gas de- sorption under condition of non-isobaric slurry medium appeared a similar S shape or a similar shape of hyperbola and tangent functions thx=（ex-e-x）/（ex＋e-x）. |
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| Keywords: | exploration coring gas content slurry medium non-isobaric desorption |
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