Combining the optimization work of ten coal-bed methane(CBM) blocks in the east of Fukang,the author proposed to use the analytic hierarchy process to determine the relative importance of index at all levels. On the basis of constructing evaluation index system,the method firstly took into account the double characteristics: fuzziness and uncertainty of coal-bed methane geological conditions and the characteristics of economy and environment in the recoverable block,following the idea of qualitative research-quantitative ordering-the key geological analysis. Then the two methods:"key elements hierarchical optimization"and"optimizing target quantitative ordering"were all used. Through the analysis of geological , the former method screened the influencing factors that had key control effects on the prospects of different CBM of different level evaluation. Then,depending on the progressive mode of evaluation area-advantageous area-target area,evaluated and optimally selected the area. On the basis of fully investigation of influence of geology,economy and environment,the latter method evaluated these mine blocks by marks according to the actual situation,ranked them according to the weight computation,and then determined optimizing evaluation level of the target area. Eventually,the study found four beneficial mining blocks: Spring ditch coal mine, DaHuangShan well 1,XiGou well 1 and XiGou well 2. There was high consistency between field work validation and optimization result of Analytic Hierarchy Process. The result showed that:the evaluation index system guided the optimization of the actual field blocks well.%结合阜康矿区东部10个煤层气区块的优选工作,提出采用层次分析法确定各级指标的相对重要性,该方法首先在构建评价指标体系的基础上,综合考虑煤层气地质条件的模糊性和确定性双重特征以及可采区块的经济环境特征,遵循从定性研究→定量排序→重点地质分析的思路.其次采用"关键要素递阶优选"与"优选目标定量排序"两种方法并行,前者通过地质分析,筛选出对不同层次评价单元煤层气前景具有关键性控制作用的影响要素,进而按评价区→有利区→靶区的递进模式进行选区评价优选;后者在对地质、经济、环境等影响因素的综合考察的基础上,根据井田区块的实际情况定性赋分,依据权重计算取得排序,进而确定各靶区的优选评价等级.最终确定的有利开采区块为4个,分别为泉水沟煤矿、大黄山一号井、西沟二号井及西沟一号井的矿井范围.野外工作验证与层次分析法的优选结果具有较高的一致性,结果表明:该评价指标体系较好地指导了实际井田区块优选工作.
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