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中文摘要：
围岩稳定性评价是一个复杂不确定系统问题。应用集对分析和可变模糊集合理论，建立了围岩稳定性评价的集对分析-可变模糊集综合评价模型，简化了构建相对差异度过程，提高了评价结果的准确性和可靠性，并应用于实际工程，与其它分类方法进行了对比分析，结果表明该法是有效可行的，且更客观。
英文摘要：
The evaluation of stability of surrounding rock is a complicated uncertainty system problem. Based on the set pair analysis （SPA） and the variable fuzzy sets theory, a new fuzzy comprehensive classification model was established. In order to simplify the evaluation procedure and improve the accuracy and reliability of results, a new method to construct relative difference degree was proposed. Moreover, it was shown by comparison of results between a practical example and other methods that the proposed method used to evaluate the stability of surrounding rock was feasible and effective, and more objective.
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