可拓学理论在煤层注水效果评价中的应用

Application of Extenics Theory to Effectiveness Evaluation of Water Infusion in Coal Seam

将可拓学理论引入煤层注水效果评价中,建立了煤层注水效果评价的物元模型,并应用可拓集合的关联函数,建立了基于物元和关联函数的煤层注水效果评价方法,通过引入简单关联函数确定各评价指标的客观动态可变权重,对山西某矿煤层注水效果进行了评价与分析。评价结果表明:该矿的煤层注水效果评价等级为Ⅱ级,且偏向Ⅲ级,评价结果与现场工程实际和模糊综合评价结果相符合,表明将可拓学理论应用于煤层注水效果评价是合理、可行的。可拓方法以定量化的形式给出评价结果,而且等级变量特征值能反映出评价结果的偏向性及程度,采用客观权重确定方法能够避免主观因素的影响,使评价结果更为准确。

This paper establishes the matter element model for the effectiveness evaluation of water infusion in coal seam based on extenics theory, develops the method for the effectiveness evaluation of water infusion in coal seam based on the matter element and dependent function of exetenics set,and imports the subjective dynamic variable weight about evaluation indexes confirmed by simple dependent function, and evaluates the water infusion effectiveness of a coal mine in Shanxi Province. The research indicates that the effectiveness evaluation grade of water infusion in coal seam is Ⅱ ,and leans towards Ⅲ,which is consistent with the engineering practice and the results of fuzzy comprehensive evaluation. Extension methods are given in the form of quantitative evaluation results, and rank variable characteristic values can reflect the bias and degree of the evaluation results. The objective weight determination method can avoid the influence of subjective factors and keep the evaluation results more accurate. The study also shows that the application of extenics theory to the effectiveness evaluation of water injection in coal seam effect is feasible.