| 煤岩瓦斯抽放固结数学模型及应用 |
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| 引用本文： | 张春会,于永江,赵全胜. 煤岩瓦斯抽放固结数学模型及应用[J]. 辽宁工程技术大学学报(自然科学版), 2008, 27(6) |
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| 作者姓名： | 张春会 于永江 赵全胜 |
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| 作者单位： | 1. 河北科技大学,建筑工程学院,河北,石家庄,050018
2. 辽宁工程技术大学,力学与工程学院,辽宁,阜新,123000 |
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| 基金项目： | 国家自然科学基金重点资助项目 ， 河北省科技支撑计划基金资助项目 ， 河北省建设厅基金资助项目 |
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| 摘 要： | 基于煤岩弹性变形理论和瓦斯渗流理论,建立了煤岩瓦斯抽放的弹性固结数学模型,给出了模型的有限元离散方程,并开发了相应的数值计算程序.利用建立的模型和程序模拟了辽宁某瓦斯抽放井抽放过程,结果表明由于考虑了煤岩应力和变形对瓦斯渗流的影响,瓦斯压和应力分布更符合实际情况,这为煤层瓦斯抽放模拟提供了一个新的手段.但没有考虑煤岩破坏对瓦斯渗流的影响是模型的一个缺陷.
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| 关 键 词： | 弹性固结模型 有限元方法 瓦斯抽放 |
Consolidation model of gas drainage for coal and its application |
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| ZHANG Chunhui,YU Yongjiang,ZHAO Quansheng. Consolidation model of gas drainage for coal and its application[J]. Journal of Liaoning Technical University (Natural Science Edition), 2008, 27(6) |
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| Authors: | ZHANG Chunhui YU Yongjiang ZHAO Quansheng |
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| Affiliation: | ZHANG Chunhui YU Yongjiang ZHAO Quansheng(1.College of Civil Engineering,Hebei University of Science , Technology,Shijiazhuang 050018,China,2.College of Mechanics , Engineering,Liaoning Technical University,Fuxin,123000,China) |
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| Abstract: | Based on elastic theory of coal and the gas seepage theory,the gas drainage's coupling consolidation model of coal is presented and FEM discrete equations are introduced and numerical program is developed.As a case study,a gas well in Liaoning is studied with the model.Results are as follows:For the effect of stress and deformation on gas seepage is considered,gas pressure and stress distribution are much nearer to observation data. Which provides a new method for gas drainage simulation.However the effect ... |
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| Keywords: | elastic consolidation model FEM gas drainage |
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