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为了对煤与瓦斯突出的危险性进行综合评价,同时避免评价主观性强和各指标间的不相容问题。首先从地应力、瓦斯潜能以及煤的物理性质3个方面出发,针对桐梓某煤矿的3个煤层,选择了影响煤与瓦斯突出危险性的12个指标,将类间标准差法与可拓优度评价相结合建立评价模型;其次根据可拓学方法构建煤与瓦斯突出危险性的物元模型;再次通过可拓优度评价法对物元模型进行求解,同时运用类间标准差法进行权系数的计算,从而得出3个煤层危险性的优度排序,最后与基于熵权的TOPSIS法的结果进行比较。结果表明,该方法客观、明确、计算简单、实用性强。
In order to comprehensively evaluate the danger of coal and gas outburst, at the same time, to avoid the problem of subjectivity and incompatibility among various indicators. First of all, from the three aspects of geostress, gas potential and coal physical properties, 12 indexes affecting the coal and gas outburst danger are selected for 3 coal seams of Tongzi coal mine, Degree evaluation to establish the evaluation model; Secondly, construct the matter-element model of coal and gas outburst danger according to the extenics method; Solve the matter-element model again by the method of extension excellentness evaluation, Coefficient, and then get the rank of the three coal seam hazards, and finally compare with the TOPSIS method based on the entropy weight. The results show that this method is objective, clear, simple and practical.