基于AHP-熵权法的采动区煤层气开发潜力评价

采动区煤层气抽采利于高效开发采煤工作面卸压煤层气，降低井下瓦斯安全风险，但地质条件、煤炭采掘条件的差异使得地面井开发效果差异较大，因此，对预备采区进行选区评价具有指导意义。为了探索煤矿采动区煤层气高效开发的选区方式，通过建立一票否决制度及评价指标体系、结合层次分析法及熵权法确定指标权重、最后量化计算综合得分的方法，建立一套完整的采动区煤层气开发潜力评价体系，并应用于铁法矿区晓南矿。结果显示，研究区16个规划采区中有4个得分大于0.6，建议进行采动区煤层气开发；同时，评价结果排序靠前的单元净收益也较高，且处于矿区内煤层气赋存有利构造区域，与评价结果相吻合，验证了评价结果的合理性。综合认为，采用层次分析–熵权法组合权重的评价结果更为合理，有效避免了采动区煤层气选区开发的盲目性，评价结果具备一定实际工程开发部署及经济效益参考价值。 

Evaluation of the development potential of the coalbed methane resources in mining area based on AHP-entropy method

The development of coalbed methane(CBM) in mining area is conductive to the efficient mining of pressure relief CBM in mining panels, and it reduces the risk level of underground gas. However, the difference in geological and coal mining conditions makes the development effect of surface wells quite different. Therefore, it is of guiding significance to evaluate the pre-mining panel selection. In order to explore an efficient selection method of CBM in mining areas, a complete evaluation system of CBM development potential in mining area is established by building one vote veto system and evaluation index system, combining analytic hierarchy process(AHP) and entropy method, finally quantifying the comprehensive score, and the method was applied to the Xiaonan Mine in Tiefa Mining Area. The results show that 4 of the 16 planned mining panels scored greater than 0.6, then it is recommended to develop CBM from them. At the same time, the units with higher ranking of evaluation results has higher income, and they are located in the favorable tectonic area for CBM in Xiaonan Mine, which is consistent with the evaluation results and verifies the rationality of the evaluation results. In conclusion, the evaluation results of AHP-entropy method are more reasonable, effectively avoid the blindness of CBM development in mining area, and have certain practical reference value for engineering development arrangement and economic benifits.