中文摘要：

影响围岩稳定性评价因素较多，且围岩破坏机理复杂，围岩稳定性评价一直受到工程界的广泛关注。本文基于粗糙集理论探讨了围岩稳定性的模糊综合评价方法，即利用粗糙集中的知识约简方法来挖掘评价指标，应用信息量概念确定评价指标的权重。实例应用结果表明该法进行围岩稳定性评价是可行的，且操作简单，结果可信。

英文摘要：

The stability of surrounding rock is affected by many factors, and the failure mechanism is Complex. Therefore, more and more concerns are given by the engineers. In this paper a fuzzy assessment method of surrounding rock stability based on rough set theory is discussed. The evaluated indexes are selected by use of knowledge reduction method of rough set theory. The method using a concept of information quantity is also introduced to determinate index weight. The results from the practical example show that this proposed method used to evaluate the surround rock stability is effective and reliable, and easy to operate.