According to the statistic analysis and the rock grading idea,the paper researches and identifies the key influential factors for the excavation stability of the rock cutting side slopes,and points out the hazardous evaluation methods for the rock cutting side slopes based on the change grading model,so as to lay the foundation for making the protection measures of the side slopes.%通过统计分析,借鉴岩体分级的思路,研究确定了岩质路堑边坡开挖稳定的关键影响因素,提出了一种基于概率分级模型的岩质路堑边坡危险性评价方法,为边坡防护措施的制定提供了基础。
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