發(fā)布時(shí)間：2019-07-19 10:45

【摘要】：氣體在多孔介質(zhì)中滲流時(shí),不僅需克服啟動(dòng)壓力梯度,而且受氣體滑脫效應(yīng)的影響�；诿簩油咚沟臐B流特性,建立考慮滑脫效應(yīng)的煤層瓦斯?jié)B流模型,并對(duì)煤層瓦斯?jié)B流過(guò)程的壓力分布進(jìn)行數(shù)值模擬。計(jì)算結(jié)果表明,在一定煤層深度內(nèi),與不考慮滑脫效應(yīng)時(shí)煤層瓦斯壓力分布相比,考慮滑脫效應(yīng)對(duì)其影響顯著,且隨著暴露時(shí)間增長(zhǎng)和距煤壁距離增大,其差別更為明顯�；撘蜃拥淖兓瘜⒅苯佑绊懨簩觾�(nèi)部氣體壓力的分布,隨著滑脫因子的增大,氣體壓力減小,滑脫越明顯。與不考慮滑脫效應(yīng)(Darcy解)瓦斯壓力分布相比,考慮滑脫效應(yīng)時(shí)煤層瓦斯壓力分布曲線更接近實(shí)測(cè)數(shù)據(jù),表明在研究煤層滲流過(guò)程中須考慮滑脫效應(yīng)。
[Abstract]:When the gas permeates in porous media, it is not only necessary to overcome the starting pressure gradient, but also affected by the gas slippage effect. Based on the seepage characteristics of coal seam gas, a coal seam gas seepage model considering slippage effect is established, and the pressure distribution of coal seam gas seepage process is numerically simulated. The calculation results show that in a certain coal seam depth, compared with the coal seam gas pressure distribution without considering the slippage effect, considering the slippage effect has a significant effect on it, and the difference is more obvious with the increase of exposure time and the distance from the coal wall. The change of slippage factor will directly affect the distribution of gas pressure in coal seam. With the increase of slippage factor, the gas pressure decreases, and the slippage becomes more and more obvious. Compared with the gas pressure distribution without considering the slippage effect (Darcy solution), the coal seam gas pressure distribution curve considering the slippage effect is closer to the measured data, which indicates that the slippage effect should be considered in the study of coal seam seepage.
【作者單位】： 河南理工大學(xué)安全科學(xué)與工程學(xué)院;河南理工大學(xué)土木工程學(xué)院;
【基金】：國(guó)家自然科學(xué)基金項(xiàng)目(51274090) 中國(guó)博士后科學(xué)基金項(xiàng)目(2013M531673) 河南省科技攻關(guān)計(jì)劃項(xiàng)目(142102310268) 河南省高等學(xué)校深部礦井建設(shè)重點(diǎn)學(xué)科開放實(shí)驗(yàn)室開放研究基金項(xiàng)目(2013KF-01)
【分類號(hào)】：TD712

【參考文獻(xiàn)】

相關(guān)期刊論文 前10條

1 朱益華;陶果;方偉;王勝奎;;低滲氣藏中氣體滲流Klinkenberg效應(yīng)研究進(jìn)展[J];地球物理學(xué)進(jìn)展;2007年05期

2 彭守建;許江;尹光志;蔣長(zhǎng)寶;楊紅偉;;基質(zhì)收縮效應(yīng)對(duì)含瓦斯煤滲流影響的實(shí)驗(yàn)分析[J];重慶大學(xué)學(xué)報(bào);2012年05期

3 葉禮友;高樹生;熊偉;朱光亞;胡志明;;儲(chǔ)層壓力條件下低滲砂巖氣藏氣體滲流特征[J];復(fù)雜油氣藏;2011年01期

4 李云浩;楊清嶺;楊鵬;;煤層瓦斯流動(dòng)的數(shù)值模擬及在煤壁的應(yīng)用[J];中國(guó)安全生產(chǎn)科學(xué)技術(shù);2007年02期

5 楊建;康毅力;李前貴;張浩;;致密砂巖氣藏微觀結(jié)構(gòu)及滲流特征[J];力學(xué)進(jìn)展;2008年02期

6 陳代s，

本文編號(hào)：2516261