为解决判定煤层瓦斯抽放难易程度时煤层透气性系数和钻孔流量衰减系数2个评价指标相互矛盾及不同煤层抽放难易程度相互比较的问题,以《煤矿瓦斯抽放规范》为依据,以可拓学为理论基础,确定了评价煤层瓦斯抽放难易程度的经典域和节域,并得到了待评价煤层与各等级关联度的一般公式。应用结果表明:采用可拓学方法评价煤层瓦斯抽放难易程度及比较不同煤层的抽放难易程度是可行的。

In order to solve the mutual contradiction of the two evaluation indexes between the seam permeability cofficient and the attenuation factor of borehole gas flow during the judgment of the difficult degree for the seam gas drainage and to solve the mutual comparison problems of the different seam gas drainage difficult degree, taking the Mine Gas Drainage Regulations as the basis, based on the extenics as the theory, the classics area and sectional area was determined to evaluate t he seam gas drainage difficult degree and a general formula was obtained to evaluate the seam and each grade relevance.The application results showed that the appli cation of the extenics method to evaluate the seam gas drainage difficult degree and to compare the gas drainage difficult degree of different seam would be feasible.

国家自然科学基金重点资助项目(50834005)；国际科技合作攻关资助项目(2008DFB70100)；