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在对比分析各类岩体质量评判方法的基础上,针对影响地下工程岩体质量的关键因素,选取其中的6项基本指标作为地下工程岩体质量评判的基础.然后采用距离判别分析的思想确定岩体评价指标的隶属度,并引进变异系数法与专家评分相组合来确定各指标权重,建立了相应的模糊综合评价模型.该方法使得距离判别关系定量化,避免单纯距离判别分析方法中的模糊不确定性带来的误差.通过对三山岛金矿深部岩体进行的工程应用表明,该方法对于地下工程岩体分级具有很好的适用性与合理性.
Based on the comparative analysis of various rock mass quality evaluation methods, six basic indexes are selected as the key factors that affect the rock mass quality of underground engineering as the basis of rock mass quality evaluation of underground engineering.Then the idea of distance discriminant analysis The membership degree of rock mass evaluation index is introduced and the weight coefficient of each index is determined by combining the variation coefficient method and expert score.The corresponding fuzzy comprehensive evaluation model is established.The method makes the distance determination relation quantified and avoids the problem of simple distance discriminant analysis The error caused by fuzzy uncertainty.Based on the engineering application of the deep rock mass in Sanshandao gold deposit, the method has good applicability and rationality to the classification of underground engineering rock mass.