On the basis of experimental data of triaxial compression in different conditions

a stress –strain –time constitutive model was created through the learning procedure by using genetic algorithm which ran in the parallel computing environment .The predicted results which were obtained through the created model indicate that this model is well in accord with the constitutive model of diatomaceous soft rock .This method

which creates a constitutive model by using genetic algorithm

has a vigorous foreground in the rock and soil mechanics .It provides a new approach for the further research of constitutive models .