西安科技大学学报2012，Vol.32Issue(1)：1-7,7.
尾巷瓦斯抽采下采空区煤自燃升温的数值模拟
Numerical simulation of heating up of coal spontaneous combustion in gob area under tail roadway methane drainage pattern
摘要
Abstract
In respect of the influence of tail roadway methane drainage pattern on spontaneous combustion in long wall gob area, the coal spontaneous combustion heating up model containing heating resource and heat transfer relationship between air and coal was established. The steady oxygen contribution and unsteady temperature change history under different condition were calculated using FLUENT software. Compared with no-methane drainage situation, depth methane drainage with high flux will change flow pattern in gob area dramatically and leads the oxygen into depth of gob. Thus the rate of temperature rise can accelerate obviously and high temperature region moves back towards depth of gob. Nitrogen injection can decrease the oxygen concentration to low level within certain scope where high temperature region has different degree control effect by nitrogen injection with times but has little help for high temperature scope near drainage hole.关键词
瓦斯抽放/煤自燃/升温模型/注氮/温度分布Key words
methane drainage/ coal spontaneous combustion/ heating up model/ nitrogen injection/temperature distribution分类
矿业与冶金引用本文复制引用
朱红青,刘星魁..尾巷瓦斯抽采下采空区煤自燃升温的数值模拟[J].西安科技大学学报,2012,32(1):1-7,7.基金项目
国家自然科学基金项目(51074168) （51074168）
