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针对基于漂移度的隧道围岩质量分级组合评价方法存在漂移度参考对象不一致,计算结果不可比问题,引入支持度概念作为各基础评价方法权重计算的依据。首先,从相似度和差异度两个方面建立新的支持度数学定义,避免了传统支持度公式仅考虑差异度的缺陷。其次,以整体数据对每种基础评价方法评价结果的综合支持度作为权重计算综合评价结果,从而建立了隧道围岩质量分级的新型组合评价方法,该方法不仅可以解决不同基础分级方法评价结果的非一致性问题,更重要的是其解决了漂移度概念下参考对象的不一致问题,使得权重结果更客观实际,理论基础更加坚实。最后,通过工程实例分析,表明了该方法的合理性与可行性。
In order to solve the problem of incompatibility of drift reference objects and incomparable calculation results, the concept of support degree is taken as the basis of weight calculation for tunnel surrounding rock mass classification based on drift degree. First of all, a new mathematic definition of support degree is established from two aspects of similarity and difference, which avoids the defect that the traditional support formula only considers the difference degree. Secondly, based on the overall data, the comprehensive support of each basic evaluation method is used as the weight to calculate the comprehensive evaluation results, so that a new combined evaluation method of tunnel surrounding rock mass classification is established. This method can not only solve the evaluation results of different basic grading methods More importantly, it addresses the problem of inconsistency of reference objects under the concept of drift, making the weighting results more objective and more realistic. Finally, through the case study, the rationality and feasibility of the method are demonstrated.