【摘要】 焦作矿区山西组二１煤层甲烷含量高，这在华北地区较为典型。通过对该区盖层构造演化、二１煤层变质作用和生烃过程的研究，探讨了不同构造演化阶段二１煤层产出气体的运移和赋存规律。认为造成本区甲烷含量高的主要因素是构造控气作用。更多还原

【Abstract】 No.Ⅱ1 seam of Shanxi Group in Jiaozuo Mine Area has high content methane, which is typical in north China.Based on investigation of evolution of structure of the overburden,metamorphism of Ⅱ1 seam and the process of gas generation in this area,this paper discusses migration and occurrence of gas in Ⅱ1 seam at different stages of tectonic evolution.It considers that the main factor which influences high concentration of methane in this area is the tectonic controlling effect.更多还原