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理想点法是一种多目标决策分析法,其基本思路是通过构造多指标问题的理想解和反理想解,并以靠近理想解和远离反理想解的程度作为各评价对象的判断依据,基于此原理建立了隧道围岩分类的理想点法评价模型。理想点法各指标权重的取值是否合理对最终的评判结果有着很大的影响,采用粗糙集理论把权重问题转化为粗糙集中属性重要性评价问题,以此来确定各指标权重。该方法不需先知经验,求解过程完全由实际样本驱动,具有很强的可操作性。建立了基于粗糙集和理想点法的隧道围岩分类模型,并应用于实际工程,结果表明,该方法的分类结果与实际相符,基于粗糙集和理想点法为隧洞围岩分类提供了一种新思路。
The ideal point method is a multi-objective decision analysis method. The basic idea of this method is to construct the ideal solution and the anti-ideal solution for the multi-index problem, and to judge the object of evaluation based on the degree of approaching the ideal solution and away from the anti- This principle establishes the ideal point method evaluation model of tunnel surrounding rock classification. The reasonable value of each index weight is reasonable on the final evaluation results have a great impact on the use of rough set theory to transform the weight problem into rough set of attribute importance evaluation, in order to determine the weight of each indicator. The method does not need prophetic experience, the solving process is completely driven by the actual sample, with strong operability. The tunnel surrounding rock classification model based on rough sets and ideal point method is established and applied to practical engineering. The results show that the classification results of this method are in accordance with the actual ones. Based on the rough sets and the ideal point method, New ideas.