洞室岩体质量评价的模糊可变集合方法

Use of Variable Fuzzy Sets Method for Evaluating Tunnel Rock Quality

摘要: 将模糊可变方法与洞室岩体质量评价相结合，从洞室工程的角度选取能够反映岩体综合工程特性的参数进行评价，在差异函数与相关参数的基础上建立洞室岩体质量评价模型。该方法能够科学、合理地确定与洞室岩体质量相关的各个研究指标处于级别区间的相对隶属函数，并根据指标重要性进行二元比较与量化，从而合理地确定出各个指标的权重，得出洞室岩体质量的综合评价的级别特征值。对石牌岭公路隧道岩体质量进行了分析，实例证明，本文所提方法能够准确地反映洞室岩体的工程特性。

Abstract: The variable fuzzy sets method is combined with tunnel rock quality evaluation. In view of the va-riety and complexity of the factors influencing rock quality, the parameters reflecting the general rock engineering are taken into account for evaluation. Under difference function and relative parameters thus the calculating model is advanced. The method can scientifically determine rela-tive membership functions of disquisitive indexes at level interval relating to engineering, also it can fully use one’s experience and knowledge, qualitative and quantitative information of index system to obtain weights of indexes for operating comprehensive evaluation for tunnel rock quality. The numerical example of Shibeiling tunnel rock shows that the proposed method can more precisely reflect the engineering characteristics of tunnel rock.