自燃采空区耗氧-升温的区域分布特征

联立求解采空区非线性渗流、多组分气体弥散和温度场，用表征温度(数值解）表达自燃程度和氧化区域分布特征，同时考虑垮落层位上氧化的非均匀性、工作面推进度和动态边界等各影响因素.在考虑升温情况下，采空区自燃“三带”划分方法与表征温度场方法具有一致性，温度场方法表达更具体.计算得到，虽然主自燃危险区处在上游进风侧，但因垮落层位的耗氧差异，在回风边界处(上、下双层流汇流）也可能形成局部高氧浓度区.在“定向漏风供氧-煤耗氧-工作面推进”三者综合作用下，激烈氧化升温带位于高温区的前沿，形成趋于平衡的升温分布区；最高升温点处在氧浓度分布低值区.随着高温区的强烈耗氧和工作面推进移动，高氧区与高温区的分离趋势加大.

Distribution characteristic of remaining coal oxygen consumption and spontaneous combustion heating up in goaf

Gave the factors such as the heterogeneity of caving and oxygenization,working face impelling degree,and dynamic boundary,etc.,the equations of goaf nonlinear seepage,dispersion of multicomponent gas and temperature were solved simultaneously.Token temperature(numerical solution) was used to represent the degree of spontaneous combustion and local distribution characteristic of spontaneous combustion oxygenization in goaf.Based on the theoretical computation,difference of oxygen consumption at caving levels...