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分析了焦作矿区煤层气含量的分布规律 ;探讨了断块构造、煤层埋深、上覆岩层厚度等对煤层气的控制作用 .结果表明 :焦作矿区山西组二1煤煤层气含量较高 ,最高达 3 2 .7m3 /t(daf) ,平均为 1 6 .7m3 /t(daf) ;由于煤变质及其演化、煤层的有效埋藏深度、抬升剥蚀作用和地质构造等因素对煤储层特性产生显著的影响 ,使本区煤层气含量分布具有明显的规律性 ,从西部断块至东部断块煤层气含量由高到低变化 ,且各断块内由浅部向深部逐渐增高 .
The distribution of coalbed gas content in Jiaozuo coal mine is analyzed.The CBM control action such as fault block structure, coal seam depth and overlying rock thickness is discussed.The results show that the CBM content of No.2 coal seam of Shanxi Formation in Jiaozuo coal mine is high and up to 3 2 .7m3 / t (daf) with an average of 16.7m3 / t (daf). Due to coal metamorphism and its evolution, the effective burial depth of coal seam, uplifting and denudation and geological structure have significant effects on coal reservoir characteristics The CBM content distribution in this area is obviously regular. The content of CBM varies from high to low from the western fault block to the eastern fault block, and gradually increases from shallow to deep in each fault block.