焦坪矿区属我国少有的煤、油、气共生矿区，矿井瓦斯涌出量大，而且随着采煤活动的进行瓦斯涌出量波动范围大，影响煤矿安全生产。研究矿区主采煤层瓦斯的形成过程、赋存规律、运移特征与涌出变化特征，探讨瓦斯的定量预测，是进行瓦斯事故预防的重要手段之一。 通过采集焦坪矿区两个主要生产矿井的煤样进行工业分析、煤岩组分分析、煤基表面特征分析（扫描电镜分析）、孔隙分布与孔容特征分析（孔隙度分析、压汞实验、液氮吸附实验）、吸附解吸特征分析（等温吸附解吸实验），并对大量的实验数据进行分析、整理、数学拟合，认为：陈家山4#煤的液氮吸附能力，进汞饱和度均大于下石节4#煤，两个矿井4#煤的孔隙形状表现为典型的平行板狭缝型孔隙，孔隙呈开放状态。陈家山4#煤的孔喉表现为瓶颈型，比下石节4#煤的开放性好。根据煤基表面特征及其能量分布的差异，选用吸附剂表面脱附作用差异影响的Weibull函数描述解吸作用，等温吸附实验的Langmuir函数模型与解吸实验数据Weibull函数拟合，均表明陈家山4#煤的吸附热小于下石节4#煤，陈家山4#煤的解吸易于下石节4#煤。 由矿井瓦斯抽放性评价可以得出，焦坪矿区煤层瓦斯具有可抽放性。针对矿区煤、油、气共生，煤层自然发火周期短、矿井瓦斯涌出量大，煤层结构不稳定，煤的力学参数差异的特点，提出将顶板瓦斯抽放作为矿井瓦斯防治的主要手段，采煤过程中将本煤层瓦斯抽放作为辅助手段，以保障采掘工作安全、持续、稳定、高效进行。

Jiaoping mining area is a rare mining region of China in which coal, oil and gas associate. The large amount of gas from coal-bed and layer becomes the main factor that affects mine safety. By studying coal gas’s formation, storage and emission characteristics and discussing the volume forecast of gas flow-volume, it is one of the main methods to prevent gas accidents. Through collection coal samples of Jiaoping mining area’s two main production mine to be on proximate analysis, coal and rock composition analysis, coal-based surface characteristics analysis(SEM analysis), pores distribution and pore volumes characteristics analysis(porosity analysis, mercury penetration experiment, liquid nitrogen adsorption experiment), adsorption and desorption characteristics analysis(isothermal adsorption and desorption experiment) and mass of experimental data was analyzed, organized and mathematical fitted, the analysis shows that Chenjiashan 4#coal’s liquid nitrogen adsorption capacity and mercury penetration saturation degree are larger than Xiashijie 4#coal. On 4#coal of two mines, the pore shape show as parallel plate crevice and open form. And the pore throat of Chenjiashan 4#coal show as bottleneck. The openness on Chenjiashan 4#coal’s pore is better than Xiashijie 4#coal. Based on coal-based surface characteristics and the discrepancy of energy distribution, we select Weibull function, which influence by desorption discrepancy on sorbent surface, to describe desorption. Combined the isothermal adsorption experiments of Langmuir function model with experimental data desorption Weibull function, it shows that adsorption heat of Chenjiashan 4#coal is less than Xiashijie 4#coal and desorption of Chenjiashan 4#coal is easier than Xiashijie 4#coal. After evaluated the gas drainage probability, Jiaoping mining area coal bed gas have drainage probability. According to the characteristics of the intergrowth of coal, oil and gas, short cycle of coal seam natural catching fire, large gas emission amount, coal seam texture unsteadiness and discrepancy of coal mechanics parameters, it is suggested that roof gas drainage is the main means for mining safety. While excavating coal, gas drainage in current seam is the supplementary mean to ensure mining working safely, continuously, stably and effectively.