摘要
为研究注氮对采空区自燃三带分布的影响,建立了二维注氮采空区渗流场的数学模型,研究了注氮量的变化对采空区流场分布的影响,得到了注氮采空区自燃三带的分布规律。结果表明,随着注氮量的增大,散热带增宽,氧化带向采空区深部移动,距注氮源越近三带所受影响越大,并分析了注氮量对工作面氧浓度分布的影响。
In order to study the effects of nitrogen-injection on the distribution of three zones of spontaneous combustion in goaf,a physical model of seepage field in goaf with nitrogen-injection is established and the flow field in goaf is simulated.The three zones of spontaneous combustion in goaf are affected by the amount of nitrogen-injection.The results show that the heat dissipation zone is widened and the oxidation zone is moved to the deeper region in goaf when the amount of nitrogen-injection is enhanced.The influence of the amount of nitrogen-injection on oxygen concentration in the face is also analyzed.
出处
《工业安全与环保》
北大核心
2015年第6期66-68,102,共4页
Industrial Safety and Environmental Protection
基金
河北省矿井灾害防治重点实验室开放基金(KJZH2013K02)
煤炭资源与安全开采国家重点实验室大学生科技创新计划项目(Y20131119)
关键词
注氮
采空区
自燃三带
数值模拟
nitrogen-injection goaf spontaneous combustion three zones numerical simulation
