Abstract: In rock slope stability study, the slope rock mass strength parameters usually needed to be known.And experiment usually provides slope rock strength parameters.Therefore, how to convert Chengbianpo rock parameters stability analysis of rock mass needed parameters of rock slope stability analysis is very important, the results of the analysis on the slope stability has great influence.The domestic and international in common use in the intensity parameter transformation methods for comparative analysis was studied.Meanwhile, the modern BP neural network method was used in the slope rock mass strength parameters of the conversion.It was used in the practical slope stability study, and the application effect is remarkable.

Key words: Slope, Rock strength, Rock mass strength, Strength parameter conversions, Neural network