中文摘要：

针对岩质边坡稳定性分析方法存在的缺陷和不足,将AHP-理想点模型引入岩质边坡稳定性分级中。该模型从地形地貌、力学性质、结构、气候以及其他外因等各方面综合考虑,选取黏聚力、内摩擦角、坡角、坡高、最大地震烈度以及最大过程降雨共6个影响因素作为评价指标,并运用层次分析法确定各指标的权重。其基本思路是通过构造理想点评价函数,并确定各岩质边坡稳定性等级下的理想点贴近率;然后,将岩质边坡稳定性等级判别为理想点贴近率较小值所对应的等级,并将该模型应用于工程实际。研究结果表明：处于不稳定和极不稳定的理想点贴近率分别为0.400和0.339,因而该岩质边坡稳定性为不稳定—极不稳定,与实际情况相符,表明该模型具有较高的可靠性和较强的实用性,为岩质边坡稳定性分级提供了一种新的思路和方法。

英文摘要：

According to the deficiencies of the commonly used methods in slope stability analysis, the AHP- ideal point model was introduced to the stability gradation of rock slope. Topography, mechanical properties and structure, climate and other factors were taken into account in this model so that the cohesion, internal fiction angel, slope angel, slope height, the maximum seismic intensity and the maximum process rainfall were chosen as the evaluating indicators weighted by AHP（analytic hierarchy process）.The basic idea of this model was to construct ideal point evaluating function and determine the ideal point close degrees of all the rock slope stability gradations. Then, the stability gradation of rock slope was close to the gradation whose close degree was smaller. Finally, the model was applied in the actual engineering. The results show that the unstable and highly unstable close degrees are 0.400 and 0.339, respectively.Therefore, the actual rock slope is from unstable to highly unstable, which is in accordance with the actual situation. The model has higher reliability and practicability, which provides a new idea and method for stability gradation of rock slope.