基于熵值法-FAHP的煤层底板突水常权脆弱性指数法应用

通过分析井工三矿39201工作面及所在矿井的地质、水文地质特征,确定了影响工作面煤层底板突水的各主控因素。使用单一的客观或者主观赋权方法在突水危险性评价中有着缺陷,难免会造成评价结果的主观随意性过大或者太注重数据本身,导致客观性太强。为确保井工三矿39201工作面底板突水危险性科学可靠的分区评价,结合2种主客观赋权法的优点,采用模糊层次分析法(FAHP)、熵值法的综合权重确定方法,确定各主控因素对井工三矿39201工作面底板突水危险性影响的权重大小,避免了单一使用主观或客观权重确定方法的不全面性。然后应用GIS的空间分析、数据处理功能,以及多因素融合的矿井底板突水评价方法--脆弱性指数法,对工作面突水危险性进行分区与评价。

Application of constant weight vulnerability index method of water-inrush from coal seam floor based on entropy method and FAHP

The main control factors affecting water-inrush from coal seam floor were determined by analyzing geological and hydrogeological characteristics of the working face in Jinggong No.3 Mine.Due to the defects of using single subjective or objective weighting method in water inrush risk assessment，it is inevitable that the subjective randomness of the assessment results is too large or too much attention is paid to the data itself and resulting in too strong objectivity.Therefore，in order to ensure the scientific and reliable zonal evaluation of the water-inrush risk of the floor of 39201 working face in Jinggong No.3 Mine，combined with the advantages of two subjective and objective weighting methods，the fuzzy analytic hierarchy process（FAHP） and entropy method are used to determine the weight of each main control factor on the water-inrush risk of the floor of 39201 working face in Jinggong No.3 Mine，so as to avoid single subjective or objective use the method of weight determination is not comprehensive.Then，the GIS spatial analysis and data processing function，combined the vulnerability index method which is the evaluation method of water inrush from mine floor，were used to partition and evaluate the risk of water-inrush.