【摘要】 目前各种岩体质量评价方法考虑的因素及其评分标准不统一,导致岩体质量评价存在一定的局限性。通过采用灰色系统理论改进传统TOPSIS法在多指标综合评价中的不足,提出一种基于组合赋权和灰色逼近理想解排序(TOPSIS)的岩体质量评价方法。根据岩石性质选取8项评价指标,建立了符合工程实际的评价指标体系,并依据信息熵原理对各项评价指标进行主客观组合赋权,克服了传统单一赋权方法的缺陷,保证了指标权重的客观性。最后探讨了提出方法在水布垭地下厂房围岩质量评价中的应用。结果表明:本文提出方法相比于可拓物元法、模糊可变集法和分形插值评价方法,评价结果是准确可靠的,操作简单,计算精度高,较好解决了岩体工程中的实际问题,亦可推广应用于其他水利工程的评价中。更多还原

【Abstract】 There are some limitations in evaluating the rock mass quality due to the factors considered by the rock mass quality evaluation method and the evaluation criteria are not unified. Traditional TOPSIS method is improved by using the grey system theory in the comprehensive evaluation of multiple indicators. A new method for evaluating the rock mass quality based on combined weights and gray technique for order preference by similarity to ideal solution( TOPSIS) is proposed. According to the rock properties,8 evaluation indexes are chosen,the evaluation indices system according with engineering practice is set up,and the subjective and objective weights of each evaluation index is combined based on the information entropy principle. Finally,the application of this method in the evaluation for surrounding rock mass of the Shuibuya underground powerhouse is discussed. Results of the proposed method are accurate and reliable compared with the extension matter-element method,the fuzzy variable set method and the fractal interpolation method. The proposed method is simple and accurate,which solves the practical problems in rock mass engineering well,and can be applied in the evaluation of other water conservancy projects.更多还原