摘要
煤矿瓦斯事故频发,危害严重,用计算机模拟矿井掘进巷道中的瓦斯分布与积聚是优化通风方案的重要手段.本文根据流体动力学理论,对局部通风掘进巷道中的瓦斯分布与积聚进行数值模拟,分析了在风量和瓦斯涌出量变化的情况下瓦斯体积分数的分布规律.结果表明,当风量和瓦斯涌出量成比例变化时,低体积分数区域的瓦斯大致按比例变化,高体积分数区域的瓦斯体积分数并不是成比例变化.
Coal mine gas accident happen frequently and harm is serious, the computer simulation is the main way of the ventilates optimization. Based on the theory of Fluid Dynamics, the distribution and accumulation of gas at a working face with auxiliary ventilation are simulated, and the pattern of gas distribution with varing airflow velocity and gas emission rate is anallzed. The result indicated that gas volume fraction generally varies in proportion with air velocity and gas emission rate at low volume fraction area, and at high volume fraction area it does not vary in proportion with air velocity and gas emission rate.
出处
《河南理工大学学报(自然科学版)》
CAS
2007年第6期609-612,共4页
Journal of Henan Polytechnic University(Natural Science)
基金
河南省高校杰出科研人才创新工程项目(2004KYCX005)
教育部留学回国人员科研启动基金资助项目
河南理工大学博士基金资助项目(B0204)
关键词
瓦斯事故
数值模拟
瓦斯体积分数
瓦斯积聚
gas accident
numerical simulation
gas volume fraction
gas accumulation