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For the rock mass parameter uncertainties in numerical analysis, this paper illustrates an equivalent pattern recognition model. Firstly, based on indoor rock mechanical parameter test along with the rock classification and experience, it carries out orthogonal numerical simulation on different parameter variants to get the different calculation displacements. Secondly, it fits a function relation between the calculation displacement and rock parameters using statistics analysis. Thirdly, itfatcat:puzvs6e6g5eczfwmbtj4h23g7u