Factors such as buried depth,volatile matter of raw coal,water content and ash content in raw coal can produce influence upon gas content to some extent.

• 分析认为:研究区煤层气含量各煤层差异性较大,埋深、原煤挥发分、原煤水分、灰分产率等因素对煤层气含量均有一定的影响。