Study On Safety Evaluation Of Coal Mine Based On Combination Determining Weights And Local Variable Weights

Three issues which include the establishment of index system of safety evaluation of coal mine,the rational allocation of each index weight and the method selecting of safety evaluation are usually involved during the comprehensive safety evaluation of coal mine.Considering the complication of product system and the polytropism and hiding of risk factor,certain principle should be followed in order to fully and effectively reflect the safety attribute of coal mine when setting up index system.Lots of scholars are facing the problem needed to further study that how to rationally allocate the weights of each index so as to truly reflect the significance of them in the comprehensive safety evaluation process.Based on this,the paper is try to make to certain extent some progresses.There is no doubt that whether the problem can be resolved or not directly determines the scientificness and the effectiveness of evaluation results.The theoretical framework which involves in the principle and the process of setting up index system of coal mine and the theory of combination determining weights and local variable weights is elaborated in the paper in the first;After collecting raw materials related,the paper then acquires constant weights vector through the method of subjective-objective combination determining weights based on least square and local variable weights vector through the theory of local variable weights according to the theoretical framework.At last,the constant weights vector and the local variable weights vector obtained are compared and analyzed in detail,and the paper also matches the constant weights synthesizing and the local variable weights synthesizing at length in the end,which demostrates that combination determining weights and local variable weights contribute to the allocation of the index weight and the comprehensive evaluation results.