Study On Evaluation Index System Of Near Miss Management Level In Coal Mine

The Near-miss management is an advanced management of coal mine safety.A large number of literature and practical experience have proved that the higher level of Near-miss management can effectively prevent accidents.In recent years,the concepts and theories relating of Near-miss management have been gradually implemented in coal mines.However,there was still lack of guidance in the indicators system for Near-miss management.However,due to the lack of guidance in the assessment indicators system for Near-miss management,the promotion work is slow.with a view to providing reference and guidance for promoting the management of Near-miss.Firstly,based on the relevant literature on the level of Near-miss management of coal mine,this paper made a preliminary analysis of the factors affecting the level of Near-miss management in the literature from four aspects of human-machine-environment-management.Then,using the Delphi method,visited 5 coal mines in Shaanxi to carry out field research,carried out in-depth interviews on the topic "Near-miss management level of coal mine" and recorded summary interview data.On this basis,150 Near-miss cases were collected and case data were recorded in detail.The main categories and core categories were obtained,and 6 core categories of Near-miss management were determined management personnel,mechanical equipment management,operation environment management,Near-miss information management,construction of Near-miss management system,safety atmosphere.Saturation verification,determined the evaluation index factor.Secondly,through the verification and analysis of the index factors by Delphy method,a set of index system for evaluating the management level of coal mine Near-miss was constructed,which includes 6 first-level index and 25 second-level index.Then the weight of each index factor in the index system was determined by the AHP and entropy weight method from the subjective and objective two methods.The index system could be used to quantitatively evaluate the management level of coal mine Near-miss.Finally,the empirical application of the indicator system was carried out in this study.According to the indicators in index system,the questionnaire were prepared to issue the case in a coal mine and fuzzy comprehensive evaluation method was used to conduct a fuzzy comprehensive evaluation of the management leve of coal Near-miss.The two-level fuzzy comprehensive evaluation finally concluded that the management level of coal mine Near-miss was 71.2 points and the grade was level 3,and the management level of the Near-miss was a general level.The empirical research results show that the Near-miss management level evaluation index system is reasonable and effective,It can be used to guide the construction the coal mine Near-miss management system,and provide guidance and reference for improving the management of Near-miss and prevention level of coal mine Near-miss.