双指标划分采空区自燃“三带”的数值模拟

Numerical Simulation of Dividing Gob Spontaneous Combustion "Three Zones" by Double Index Method

准确快速的划分采空区自燃"三带"可以为煤自燃防治提供重要参考依据,通过建立针对性的采空区流场数学物理模型和对"三带"的划分指标进行分析,运用双指标结合数值模拟的方法快速的划分采空区自燃"三带"。通过与现场实测数据的对比验证,数据结果吻合较好,可以在工作面推进前期就准确地划分出采空区自燃"三带"的分布。

Fast and accurate division of gob spontaneous combustion ＂three zones＂ can provide an important reference for prevention and treatment of coal spontaneous combustion. Through the establishment of corresponding mathematical - physical model of gob flow field and the index analysis of dividing ＂three zones＂ , gob spontaneous combustion ＂three zones＂ can be divided fast by using numeri- cal simulation combining with double indexes method. By comparison validation with measured data, data results were in good agree- ment and the distribution of the gob spontaneous ＂three zones＂ can be divided accurately in earlier stage of working face forward.