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边坡工程是一个动态的、模糊的、开放的复杂系统,影响边坡稳定性的因素复杂且具有随机性和模糊性,传统的分析方法难以对复杂边坡的稳定性作出符合实际的评价。运用模糊概率的基本原理,建立了岩质路堑深边坡稳定性评价的模糊概率模型。在此模型中,综合选取了边坡岩体质量系数SRQC、边坡结构系数SSC、坡高系数SHC、坡角系数SCC、工程因素影响系数EFEC等5个评价指标因子;同时将边坡稳定性评价等级划分为很不稳定、不稳定、基本稳定、稳定以及很稳定5个等级。利用模糊概率模型对20个典型的边坡工程进行了稳定性评价分析,结果表明:该方法具有明显的合理性和可靠性,为边坡工程的预测与防治提供了新的途径。
The slope engineering is a dynamic, fuzzy and open complex system. The factors that affect the slope stability are complex, random and fuzziness, and the traditional analysis method is hard to make a realistic evaluation on the stability of the complex slope. By using the basic principle of fuzzy probability, a fuzzy probability model for evaluating the stability of deep rock slope is set up. In this model, five evaluation index factors such as the rock mass mass coefficient SRQC, the slope structure coefficient SSC, the slope height coefficient SHC, the slope angle coefficient SCC, and the engineering factor influence coefficient EFEC are selected synthetically. At the same time, the slope stability Evaluation of the level is divided into very unstable, unstable, basically stable, stable and very stable five levels. The fuzzy probability model is used to evaluate the stability of 20 typical slope projects. The results show that this method has obvious rationality and reliability, and provides a new approach for the prediction and prevention of slope engineering.