There are two factors to influence the hydrothermal metamorphismofcoal.
内因是煤的渗透性、水分、变质前煤阶、围岩的封闭性。
2
Research shows that maceral and the degree ofmetamorphismofcoal rock are key factors that control the generating and storing capacity of coal rock.
煤岩组分和煤变质程度是影响煤层生储气能力的主控因素。
3
While its geologic activities include peat accumulation and transportation, embedding activity caused by diastrophism and geothermal metamorphismofcoal.