选用工程中广泛应用的Ｈｏｅｋ－Ｂｒｏｗｎ强度准则作为极限状态函数，将方程中的六个变量：即主应力分量σ１，σ２，σ３；岩块单轴抗压强度σｃ和岩石参数ｍ，ｓ作为基本随机变量，采用改进的ＪＣ方法计算三维岩体强度准则的可靠度指标β。由于三维Ｈｏｅｋ－Ｂｒｏｗｎ准则方程所表现出来的高次非线性和复杂性，文中利用复合函数求导法则直接针对随机变量求解可靠度指标和相应的验算点值，并进行了参数相关及不同概型情况下三维Ｈｏｅｋ－Ｂｒｏｗｎ准则可靠度的计算。 The Hoek-Brown strength criterion widely used in engineering is selected as the limit state function, and the six variables in the equation: the principal stress components σ1, σ2, σ3; the rock uniaxial compressive strength σc and the rock parameters m, s are taken as the basic Random variable, the improved JC method is used to calculate the reliability index β of three-dimensional rock mass strength criterion. Due to the high-order nonlinearity and complexity presented by the Hoek-Brown criterion equation, the complex function derivation method is used to solve the reliability index and the corresponding checkpoint value directly for the random variables. The correlation between the parameters and the different profiles Reliability Calculation of Three-Dimensional Hoek-Brown Criterion.