岩体质量模糊分类方法

Fuzzy classification of rock mass

将模糊数学的综合评判原理引入岩体稳定性分类中,介绍了模糊综合评判的基本原理,分析了反映岩体质量的各种影响因素,考虑了地应力的影响,在考虑多种因素的影响下对岩体质量作出综合决断。根据选取指标的特征,选取正态函数作为隶属函数,介绍了评定因子参数的计算方法。通过实例分析,表明岩体分类的模糊综合评价方法避免了某些参数测定的不精确所带来的片面性, 也避免了人为划定分类界限和人为评分的主观性,有良好的工程应用前景。

The fuzzy comprehensive evaluation principle was introduced into stability classification of rock mass, and the fuzzy comprehensive evaluation of rock mass was made by consideration of geo-stress and other affecting factors. According to the characteristics of the index, the normal function was chosen as the membership function, and the calculation method for evaluating the factor parameter was given. Case study shows that the present method avoids the one-sidedness induced by inaccuracy in parameter measurement and subjectivity of the conventional method. Therefore, the method is of wide scope of application.