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基于二滩水电站和溪洛渡的工程岩体实例，提出了岩体 Ｈｏｅｋ Ｂｒｏｗｎ 经验强度准则的可靠度计算方法，同时讨论了准则可靠度对 ｍ ，ｓ 等强度参数的变异系数的敏感性以及在三维岩体 Ｈｏｅｋ Ｂｒｏｗ ｎ 经验强度准则中第二主应力对可靠度的影响程度。通过分析指出， 强度参数的变异性是准则可靠度的决定性因素之一，因此， 岩体工程的详细勘察和试验以及对参数的变异性进行统计分析，对于工程设计来说是具有重大意义的。
Based on the examples of engineering rock mass of Ertan Hydropower Station and Xiluodu, the reliability calculation method of Hoek Brown empirical strength criterion for rock mass is put forward. At the same time, the sensitivity of criterion reliability to the variation coefficient of m, s and other intensity parameters is discussed, The degree of influence of the second principal stress on reliability in Hoek Brown empirical strength criterion. The analysis shows that the variability of strength parameters is one of the decisive factors for the reliability of the criterion. Therefore, the detailed investigation and experiment of rock mass engineering and the statistical analysis of the variability of parameters are of great significance to engineering design.