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依据实测资料，在统计分析研究区３号煤层含气性特征的基础之上，对控气地质机理进行了探讨．总体上来看，研究区甲烷含量较高及甲烷浓度较大，而含气饱和度偏低．在埋深１０００ｍ以浅，向盆地内部方向以及随煤层埋深加大，甲烷含量、甲烷浓度和含气饱和度具有增大趋势，显示出埋深控气以及次级向斜相对富气的特点，这种特征可能起源于地质历史时期中煤层抬升卸压过程所导致的煤层气解吸扩散作用．因此，进一步查明次级构造的发育展布特征，精细分析其与煤层含气性特征之间的相互关系，可能对研究区煤层含气性预测乃至煤层气井布置具有积极意义
Based on the measured data and on the basis of statistical analysis of the gas-bearing characteristics of No. 3 coal seam in the study area, the geological mechanism of controlled gas is discussed. In general, the study area has a higher methane content and a higher methane concentration, while the gas saturation is lower. With the shallow depth of 1000m, the direction toward the interior of the basin and the increase of the buried depth of the coal seam, the methane content, methane concentration and gas saturation have an increasing trend, showing the characteristics of buried gas control and secondary gas levee relative richness. This feature may have originated from the desorption and diffusion of coalbed methane caused by the process of uplift and depressurization during the geological history. Therefore, further clarification of the characteristics of development and distribution of secondary tectonics, and the detailed analysis of their correlation with the gas-bearing characteristics of coal seams may have positive implications for the prediction of coal-bed gas-bearing and even coalbed methane well layout in the study area