煤田火区碳排放量计算模型和关键参数研究

完善碳排放清单，是进行减排工作的基础，为了查明煤田火区对大气碳排放的贡献量，以煤氧复合作用学说为理论基础，从不同的研究思路出发，提出了烧失煤量法和排放通量法两种火区碳排放量计算模型。在明确模型中关键参数“释放因子”“排放系数α”“排放通量”“排放系数β”的具体含义的基础上，重点对各参数所对应的获取途径进行了研究论述：(1)释放因子通过在室内进行煤自燃模拟实验得出；(2)排放系数α通过煤岩吸附实验结合火区实地勘测得出；(3)排放通量通过对火区现场煤自燃气体排放及环境因素的实时监测得出；(4)排放系数β通过对遥感图像裂隙信息的提取得到。上述两种计算模型在我国乌达实验区进行了实际应用，并对其可实现性进行了检验。

Models for estimating carbon dioxide emission from coalfield fires and the study of the related key parameters

It is the basis of emission reduction work to refine the list of carbon emissions. The aim of this study is to evaluate the carbon dioxide emission induced by coalfield fires in China. Based on coal oxygen complex action theory, two calculating methods based on “coal loss in combustion” and “gas emissions flux” were proposed with different research approaches. In these two carbon dioxide calculating methods, the parameters “discharge coefficient”, “emission factor α”, “emission flux” and “emission factor β” were explicitly defined; and then the approaches for acquiring these parameters were explained in detail: (1) “discharge coefficient” can be obtained from the experiment for simulating coal spontaneous combustion; (2) “emission factor α” can be obtained from the carbon dioxide adsorption experiment for surrounding rock and geological survey in coalfield; (3) “emission flux” can be obtained by the gas emission flux monitoring; (4) “emission factor β” can be obtained by the remote sensing interpretation with high resolution imageries. As a result, these two calculation models were used in the Wuda coal field to inspect whether the models can be used in actual operation.