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围岩稳定性评价指标分布具有有限区间分布和等级边界模糊特性。基于联系数理论和云理论的耦合方法,探讨了能考虑指标区间分布特点和级别界限模糊转换特性的围岩稳定性分类联系云模型。首先探讨了有限区间内的联系云模型,以描述有限区间内的围岩稳定性分类指标的模糊性和转换态势,结合样本指标权重和联系概率概念分析实测评价指标对各等级的综合确定度,判定了样本的围岩稳定性级别。实例应用和与其他方法对比分析结果表明,该模型应用于围岩稳定性评价是有效可行的,取得较好效果,且弥补了理想云模型不能整体描述有限区间分布的指标间确定和不确定关系的缺陷,拓广了云模型应用的适应性。
Surrounding rock stability evaluation index distribution has limited interval distribution and level boundary fuzzy characteristics. Based on the coupling theory of connection number theory and cloud theory, the classification of contact cloud model of surrounding rock stability is discussed, which can consider the distribution characteristics of index interval and the fuzzy transition features of level boundaries. Firstly, the contact cloud model in finite interval is discussed to describe the ambiguity and transformation trend of the classification index of surrounding rock stability in finite interval, and the comprehensive determination of each grade based on the concept of sample index weight and contact probability, Determine the sample rock stability level. The results of application and comparison with other methods show that the model is effective and feasible for the surrounding rock stability assessment and achieves good results, and makes up for the fact that the ideal cloud model can not describe the distribution of the finite interval as a whole. The flaws, to expand the application of cloud model adaptability.