煤炭地下气化资源条件的模糊层次综合评价

Fuzzy Hierarchy Comprehensive Evaluation on Resource Conditions for Underground Coal Gasification

为了评价宁正矿区九龙川井田主采煤层实施煤炭地下气化的可行性,基于FAHP构建煤炭地下气化资源条件评价层次结构模型,建立4个一级评价指标和9个二级评价指标,采用层次分析法确定各级控制因素的权重,分析发现煤岩煤层特征是最关键的指标.根据煤炭地下气化资源条件评价指标隶属函数模糊等级划分情况,对九龙川井田煤层资源条件进行定量分析、赋值并计算隶属矩阵.最后通过权重矩阵与隶属矩阵相乘,根据隶属函数的隶属度最大原则,对比发现煤6层实施地下气化的可行性相对最高,煤8层最低,为宁正矿区九龙川井田实施煤炭地下气化提供了科学依据.

In order to evaluate the feasibility of implementing underground coal gasification in the main coal seam of Jiulongchuan Minefield in Ningzheng Mining Area,this paper,based on FAHP of the hierarchical structure model of underground coal gasification is constructed about resource condition,establishing four first-level evaluation indicators and nine second-level evaluation indicators.The analytic hierarchy process(AHP)determines the weights of the control factors at all levels.It is found that the characteristics of coal and coal seams are the most critical indicators.According to the fuzzy classification of membership function of coal underground gasification resource evaluation index,the coal seam resource conditions of Jiulongchuan Minefield are quantitatively analyzed and assigned,and the membership matrix is calculated.Finally,by multiplying the weight matrix and the membership matrix,according to the principle of membership degree of the membership function,it is found that the feasibility of underground gasification is relatively high for the coal 6 seam,and the lowest coal layer is the coal 8 seam.Thus,the evaluation has provided a scientific basis for the underground coal gasification of the Jiulongchuan minefield in Ningzheng mining area.