基于多级熵权物元的煤矿瓦斯防治评价模型与应用

Evaluation Model and Application of Coal Mine Gas Prevention and Control Based on Multilevel Entropy Weight Matter Element

基于煤矿瓦斯防治的特点,筛选影响瓦斯防治现状安全的主要因素,建立煤矿瓦斯防治现状评价指标体系;在传统物元评价模型基础上,运用熵权法计算各级指标权重并构建多级熵权物元评价模型,以贵州省某煤矿为实例进行现状评价。实例结果表明:贵州省某煤矿瓦斯防治现状等级最大综合关联度K_2(N)=0.03,特征值j*=1.72,现状为Ⅱ级,即基本安全,评价结果与煤矿实际生产情况相符,将该模型用于瓦斯防治现状评价是可行的,并可根据各级指标关联度及特征值,有针对性的提出保障煤矿安全生产的有效措施。

Based on the characteristics of coal mine gas prevention and control,the main factors which influenced the safety situation of gas prevention and control were selected to establish the evaluation index system. On the basis of the traditional matter-element evaluation model,each index weight was calculated by the entropy weight,so as to build the multilevel entropy matter-element evaluation model which could practically evaluate the current situation of a coal mine in Guizhou Province. The results showed that in the target coal mine,the maximum correlation degree of the gas prevention and control status level was K_2( N) = 0. 03,with the characteristic value j* of 1. 72,which was evaluated as grade Ⅱ and safety by the multilevel entropy matter-element evaluation model. The evaluation results were accordant with the actual situation of the coal mine,indicating the model was reasonable and reliable. Therefore,some effective measures to guarantee the safety in production of coal mine could be raised,according to the correlation degree of each index and the characteristic value from the optimized model.