考慮滑脫效應(yīng)的煤層氣滲流數(shù)學(xué)模型及數(shù)值模擬.pdf文檔全文免費閱讀、在線看
本文關(guān)鍵詞:考慮滑脫效應(yīng)的煤層氣滲流數(shù)學(xué)模型及數(shù)值模擬,由筆耕文化傳播整理發(fā)布。
第24 卷 第16 期 巖石力學(xué)與工程學(xué)報 Vol.24 No.16
2005 年8 月 Chinese Journal of Rock Mechanics and Engineering Aug .,2005 考慮滑脫效應(yīng)的煤層氣滲流數(shù)學(xué)模型及數(shù)值模擬 肖曉春,潘一山 遼寧工程技術(shù)大學(xué) 力學(xué)與工程科學(xué)系,遼寧 阜新 123000 摘要:在千米深度下賦存煤層氣的煤層處于高地層壓力作用,因此可認為是致密的多孔介質(zhì)。煤層的滲透率低, 對于致密的多孔介質(zhì)滲流,滑脫效應(yīng)將十分顯著。據(jù)此,建立了低滲透率情況下考慮高地層壓力作用和滑脫效應(yīng) 的煤層氣滲流數(shù)學(xué)模型,并采用有限元方法對建立的數(shù)學(xué)模型進行了數(shù)值求解;比較低滲透率情況下考慮高地層 壓力作用的滑脫流和原有的達西流對壓力分布的影響。建立的煤層氣滑脫數(shù)學(xué)模型為研究煤層氣非線性滲流問題 奠定基礎(chǔ),,對高地層壓力作用下低滲透率儲層的煤層氣產(chǎn)量估算具有重要的理論價值。 關(guān)鍵詞:采礦工程;滑脫效應(yīng);滲流方程;多孔介質(zhì);地層壓力 中圖分類號:TD 821 ;O 242 文獻標(biāo)識碼:A 文章編號:1000 C6915 2005 16 C2966 C05 MATHEMATICAL MODEL AND NUMERICAL SIMULATION OF COAL-BED METHANE PERCOLATION FLOW EQUATION CONSIDERING SLIP XIAO Xiao-chun ,PAN Yi-shan Department of Mechanics and Engineering Sciences ,Liaoning Technical University ,F(xiàn)uxin 123000,China Abstract :Under the depth of about one kilometer in the deep mining ,the pressure of the coal-bed is considerably
high and the permeability of the coal-bed is comparatively low ,in which the porous media is regarded to be highly
compacted. Considering the percolation in this pre-pressing porous media,the slip
model of coal-bed methane percolation equation under high pressure condition ,which considers the slip
effects of coal-bed methane,is proposed ;and finite element method FEM is employed to calculate the numer
本文關(guān)鍵詞:考慮滑脫效應(yīng)的煤層氣滲流數(shù)學(xué)模型及數(shù)值模擬,由筆耕文化傳播整理發(fā)布。
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