基于模糊多属性群决策的危岩稳定性影响因子筛选研究

为了确定危岩体稳定性影响因子的重要程度,根据危岩体的特点,用直觉模糊数表示影响和制约危岩稳定性因子的各主要因素指标,采用模糊折衷型的TOPSIS法,确定方案与模糊理想解间的相对贴近度,并对其进行从小到大顺序排序,从而确定对危岩稳定性影响因子的重要程度。在采用以上方法分析计算后发现:岩体结构对危岩体稳定性的影响最大,地形坡度对危岩体稳定性的影响微弱地大于结构面特征,为工程设计和施工提供科学的决策依据。

Study on Choice of Factors Influencing Stability of Perilous Rock Based on Fuzzy Multi-attribute Group Decision-making

In order to determine the importance of the factors influencing stability of perilous rock, this paper, according to the characteristics of perilous rock, expressed the primary factor indices affecting and constraining the stability of perilous rock with intuitionistic fuzzy numbers and, by fuzzy compromise TOPSIS method, specified the relative closeness between the scheme and the fuzzy ideal solution, then sorted them into a increasing sequence, thus determined the importance of these factors.From the analysis and calculation of the method herein, it is found that the structure of rock mass has maximum impact on the stability, and the topographic slope has minor but greater impact than the structural surface’s features, offering scientific basis for decision-making in engineering design and construction.