煤变质作用热动力学分析的原理与方法

从地下热流状态平衡与破坏的角度，将深成地热流与附加地热流的分析结合起来，将煤的深在变质作用与区域岩浆液变质作用的分析结合起来，可建立简化的煤变质作用多阶段，多热源叠加概念模型和数学模型；查明地壳热结构影响因素及盆地内热传递方式之后，采用古地壳热结构的分析方法为盆地内部的深成地热场模拟提供底热流数值，采用双重回归方法来建立煤变质作用的Ｔ－ｔ－Ｒ。经验公式，进而可实现盆地古地热场演化及煤的多热源，多阶

PRINCIPLES AND METHODS OF THERMODYNAMICS FOR ANALYSIS OF COAL METAMORPHISM

A simplified mathematic model for coal metamorphism superimposed by a multi stage and multi heat sources metamorphism is set up in a view of balance of underground heat flows by combining plutonic geothermal flow and additional geothermal flows,and by combining geothermal metamorphism and metamorphism resulted from regional magmatic intrusion.When the influencing factors of geothermal structure and internal heat transfer within the basin are found,the heat flow values of basement are given by analysis of peleo geothermal structures for simulation of plutonic geothermal field.An emperic formula, T-t-R o ,of coal metamorphism is established by double regression.Thus a thermodynamic model of a paleo geothermal field evolution superimposed by a multi stage and multi heat sources metamorphism in the basin can be set up.