CAJ | 학술논문

将煤体看作双重孔隙单渗透率的特殊多孔介质，考虑煤层变形引起的孔隙率及渗透率变化，瓦斯的渗流扩散及吸附瓦斯解吸过程，建立了煤层瓦斯抽采固气耦合数学物理模型。利用COMSOL软件，模拟研究了钻孔抽采过程中煤层瓦斯的运移规律。研究结果表明：煤层中某一位置的渗流速度变化曲线会随着其与钻孔距离的变化而变化，距离钻孔越远渗流速度达到最大值所用的时间越长，渗流速度最大值也越小。研究结果对治理煤层瓦斯具有重要意义。
장매체간작쌍중공극단삼투솔적특수다공개질，고필매층변형인기적공극솔급삼투솔변화，와사적삼류확산급흡부와사해흡과정，건립료매층와사추채고기우합수학물리모형。이용COMSOL연건，모의연구료찬공추채과정중매층와사적운이규률。연구결과표명：매층중모일위치적삼류속도변화곡선회수착기여찬공거리적변화이변화，거리찬공월원삼류속도체도최대치소용적시간월장，삼류속도최대치야월소。연구결과대치리매층와사구유중요의의。
Coal body will be considered a dual porosity special single permeability porous media,considering of porosity and permeabili-ty changes caused by deformation of coal seam,the gas seepage diffusion and the adsorption gas desorption process,established the coal seam gas extraction coupled mathematical physical model.Using COMSOL software,it studied the coal seam gas migration regularity during drilling extraction process.The results show that the seepage velocity curve of coal seam in one location with the changes with the hole distance,the farther distance drilling seepage the longer the time for maximum speed,maximum seepage velocity.The study results has great significance of coal seam gas governance.