综放工作面采空区连续注氮防灭火工艺参数仿真优化  

Simulating Optimization of Process Parameters for Fire Prevention by Continuous Nitrogen Injection in Goaf of Fully Mechanized Caving Face

作　　者：董军[1] 于贵生 王金宝[3] 

机构地区：[1]阜新高等专科学校,辽宁阜新123000 [2]煤科集团沈阳研究院有限公司,辽宁沈阳110016 [3]冀中能源峰峰集团有限公司,河北邯郸056107

出　　处：《煤矿安全》2016年第7期186-189,共4页Safety in Coal Mines

摘　　要：为确定5-2S-2综放工作面采空区连续注氮防灭火最佳工艺参数,依据计算流体力学基本理论,构建采空区渗流场物理数学模型,借助于Comsol模拟软件,对不同注氮条件下的采空区氧浓度分布及"三带"划分进行数值模拟研究,得到最佳注氮参数为:注氮量400 m3/h,注氮口位置距工作面30 m,注氮时间15 h/d。In order to determine the optimal process parameters for fire prevention with continuous nitrogen injection at 5-2S-2 fully mechanized caving goaf. The physical-mathematical model of goaf flow field was established on the basis of the basic theory of computational fluid mechanics. Numerical simulation of goaf oxygen concentration distribution and ＂ three zone＂ division under different nitrogen injection condition was conducted by using COMSOL software. The optimal parameters of nitrogen injection are as follow： 400 m^3/h injection capacity of nitrogen,nitrogen injection port position away from the face of 30 m,the nitrogen injection time of 15 h / d.

关 键 词：综放工作面 采空区 连续注氮 参数优化 数值模拟 

分 类 号：TD752.2[矿业工程—矿井通风与安全]