煤层瓦斯渗流非线性运动规律实验研究

摘要
图/表
参考文献
相关文章 (15)

全文: PDF (624 KB) HTML (1 KB)
输出: BibTeX | EndNote (RIS)

摘要以焦作矿区赵固二矿采集加工的原煤煤样为研究对象，利用自主研制的含瓦斯煤热–流–固–力耦合实验装置，在考虑吸附变形量、孔隙气体压缩量和温度膨胀变化量的基础上，对煤样渗透率与有效应力之间的变化关系以及煤样中瓦斯运动规律进行实验研究，建立受载煤体渗透率与有效应力关系方程及描述煤层瓦斯非线性渗流规律的运动方程。研究结果表明：(1) 渗透率随有效应力增大而呈非线性递减关系，具有负指数变化规律；(2) 在围压和轴压固定情况下，研究不同孔隙压力梯度下瓦斯渗流规律，得到瓦斯渗流速度在煤体变形作用下呈现非线性特征，同时将所建方程与实验数据进行拟合，由相关度可知，实验结果与拟合结果相一致，表明所建立的运动方程与研究方法是合理的。

	服务

	把本文推荐给朋友
	加入我的书架
	加入引用管理器
	E-mail Alert
	RSS
	作者相关文章

关键词 ：采矿工程, 瓦斯渗流, 非线性, 渗透率, 孔隙压力梯度, 有效应力, 吸附变形

Abstract：Taking the raw coal samples of Zhaogu mine in Jiaozuo as a object of study，with a self-developed equipment for thermo-fluid-solid-stress coupling of coal containing methane，experimental studies of the relationship between the coal sample permeability and effective stress as well as the motion law of gas in the coal samples are conducted on the basis of considering the adsorption deformation，pore gas compression volume and temperature expansion. Relationship equation between loaded coal permeability and effective stress and motion equation which describes the nonlinear seepage law of coal seam gas have been established. Results show that：(1) Permeability represents nonlinear decreasing relationship with increasing effective stress，possessing the law of negative exponent；(2) The gas transfusion law under different pore barometric gradients in fixed confining pressure and axial compression is studied，and gas seepage velocity presents nonlinear under the action of coal transformation. Meanwhile，through fitting the experimental data with equation，it can been seen by relevance that test results are consistent with fitting results，which indicates that the established motion equation and method are reasonable.

Key words： mining engineering gas seepage nonlinearity permeability pore pressure gradient effective stress adsorption deformation

收稿日期: 2012-11-27

引用本文:

李波1，2，魏建平1，王凯2，贾彦楠1. 煤层瓦斯渗流非线性运动规律实验研究[J]. 岩石力学与工程学报, 2014, 33(sl): 3219-3224.
LI Bo1，2，WEI Jianping1，WANG Kai2，JIA Yannan1. EXPERIMENTAL STUDY OF NONLINEAR MOTION LAW FOR GAS SEEPAGE IN COAL SEAMS. , 2014, 33(sl): 3219-3224.

链接本文:

http://www.rockmech.org/CN/Y2014/V33/Isl/3219

[1]	易俊，姜永东，鲜学福. 应力场、温度场瓦斯渗流特性实验研究[J]. 中国矿业，2007，16(5)：113-116.(YI Jun，JIANG Yongdong，XIAN Xuefu. An experimental research on the characters of methane seepage in stress field and temperature field[J]. China Mining Magazine，2007，16(5)：113-116.(in Chinese))
[9]	彭守建，许江，陶云奇，等. 煤样渗透率对有效应力敏感性实验分析[J]. 重庆大学学报，2009，32(3)：303-307.(PENG Shoujian，XU Jiang，TAO Yunqi，et al. Coefficient of sensitiveness between permeability and effective pressure of coal samples[J]. Journal of Chongqing University，2009，32(3)：303-307.(in Chinese))
[4]	MAVOR M J，GUNTER W D. Secondary porosity and permeability of coal vs gas composition and pressure[J]. Society of Petroleum Engineers，2006，9(2)：114-125. " target="_blank">
[8]	卢平，沈兆武，朱贵旺，等. 含瓦斯煤的有效应力与力学变形破坏特性[J]. 中国科学技术大学学报，2001，31(6)：687-693.(LU Ping，SHENG Zhaowu，ZHU Guiwang，et al. The effective stress and mechanical deformation and damage characteristics of gas-filled coal[J]. Journal of China University of Science and Technology，2001，31(6)：687-693.(in Chinese) )
[11]	吴世跃，赵文. 含吸附煤层气煤的有效应力分析[J]. 岩石力学与工程学报，2005，24(10)：1 674-1 678. (WU Shiyue，ZHAO Wen. Analysis of effective stress in adsorbed methane-coal system[J]. Chinese Journal of Rock Mechanics and Engineering，2005，24(10)：1 674-1 678.(in Chinese))
[13]	陶云奇，许江，彭守建，等. 含瓦斯煤孔隙率和有效应力影响因素试验研究[J]. 岩土力学，2010，31(11)：3 417-3 422.(TAO Yunqi，XU Jiang，PENG Shoujian，et al. Experimental study of influencing factor of porosity and effective stress of gas-filled coal[J]. Rock and Soil Mechanics，2010，31(11)：3 417-3 422.(in Chinese))
[2]	唐巨鹏，潘一山，李成全，等. 有效应力对煤层气解吸渗流影响试验研究[J]. 岩石力学与工程学报，2006，25(8)：1 563-1 568.(TANG Jupeng，PAN Yishan，LI Chengquan，et al. Experimental study on effect of effective stress on desorption and seepage of coalbed methane[J]. Chinese Journal of Rock Mechanics and Engineering，2006，25(8)：1 563-1 568.(in Chinese))
[6]	徐涛，唐春安，宋力，等. 含瓦斯煤岩破裂过程流固耦合数值模拟[J]. 岩石力学与工程学报，2005，24(10)：1 667-1 673.(XU Tao，TANG Chun?an，SONG Li，et al. Numerical simulation of coupled gas flow in failure process of gassy coal-rock[J]. Chinese Journal of Rock Mechanics and Engineering，2005，24(10)：1 667-1 673.(in Chinese))
[12]	American Society for the Testing of Materials. D4525 Standard test method for permeability of rocks by flowing air[S]. [S. l.]：ASTM，1990. " target="_blank">
[14]	SHI J Q，DURUCAN S. Drawdown induced changes in per-meability of coalbeds：a new interpretation of the reservoir response to primary recovery[J]. Transport in Porous Media，2004，56(1)：1-16.
[3]	HARPALANI S，MOPHERSON M J. The effect of gas evacuation on coal permeability test specimens[J]. International Journal of Rock Mechanics and Mining Science and Geomechanics Abstracts，1984，21(3)：361-364. " target="_blank">
[5]	张广洋，鲜学福，谭学术，等. 煤层瓦斯运移的数学模型[J]. 重庆大学学报，1994，17(4)：53-57.(ZHANG Guangyang，XIAN Xuefu，TAN Xueshu，et al. Mathematical model of methane transport in coal seam[J]. Journal of Chongqing University，1994，17(4)：53-57.(in Chinese))
[7]	李树刚，钱鸣高，石平五. 煤样全应力应变过程中的渗透系数-应变方程[J]. 煤田地质与勘探，2001，29(1)：22-24.(LI Shugang，QIAN Minggao，SHI Pingwu. Permeability-strain equation relation to complete stress-strain in path of coal sample[J]. Coal Geology and Exploration，2001，29(1)：22-24.(in Chinese)) " target="_blank">
[10]	周军平，鲜学福，姜永东，等. 考虑有效应力和煤基质收缩效应的渗透率模型[J]. 西南石油大学学报：自然科学版，2009，31(1)：4-8. (ZHOU Junping，XIAN Xuefu，JIANG Yongdong，et al. A permeability model considering the effective stress and coal matrix shrinking effect[J]. Journal of Southwest Petroleum University：Science and Technology，2009，31(1)：4-8.(in Chinese))
[15]	周世宁，林柏泉. 煤层瓦斯赋存与流动理论[M]. 北京：煤炭工业出版社，1997：149-158.(ZHOU Shining，LIN Boquan. The theory of gas flow and storage in coal seams[M]. Beijing：China Coal Industry Publishing House，1997：149-158.(in Chinese)) " target="_blank">
[16]	HU G Z，WANG H T，TAN H X，et al. Gas seepage equation of deep mined coal seams and its application[J]. Journal of China University of Mining and Technology，2008，18(4)：483-486. " target="_blank">