摘要
应用模糊综合评判方法评价阜新盆地煤层气地质条件,解决了盆地煤层气地质条件评价的复杂性和模糊性。选取煤层厚度、埋藏深度、资源量、含气量、渗透率、煤储层压力、围岩条件等7项指标作为盆地煤层气地质条件模糊评判的评价指标,构成模糊评价因素集。将其分为好、较好、一般、较差和差5个级别。以阜新盆地煤层气地质特征为基础,采用定性与定量相结合的综合集成方法,划分盆地煤层气地质因素等级,从而构阜新盆地煤层气地质条件模糊评判矩阵。根据专家调查结果,确定以上各评价指标对总评价的权重为(0.0139,0.0039,0.0776,0.1837,0.5219,0.0745,0.1245)。最后,得出阜新盆地煤层气地质因素模糊综合评价取值为0.278245。所以阜新盆地煤层气地质条件较好,适于进行煤层气开发利用。
Comprehensive fuzzy method can solve the complexity and fuzziness of coal-bed gas geological conditions. Thickness of coal-bed, depth of imbedding, quantity of resource, gas content, permeability, stress of reservoir and wall rock conditions are defined as the seven indexes in this study. Based on the characteristics of coal-bed gas geology in Fuxin Basin, grade of coal-bed gas geological conditions is classified by using integration of quality and quantity. So the matrix of fuzzy comprehensive judgement is established. Considering investigation result of experts, the weights of the indexes are confirmed. The result shows that the coal-bed gas geological conditions in Fuxin Basin are preferably good.
出处
《中国地质灾害与防治学报》
CSCD
2006年第3期77-79,共3页
The Chinese Journal of Geological Hazard and Control
关键词
阜新盆地
煤层气
地质条件
模糊综合评判
评价指标
Fuxin Basin
coal-bed gas
geological conditions
fuzzy comprehensive judgement
assessment index
