Application of rock parameters selecting under Hoek-Brown empirical criterion;

The importance of study on mechanical parameters of rock mass,and the modified expressions on Hoek-Brown strength criterion by Hoek are introduced.

Then, the mechanical parameters of rockmass were estimated by using the Hoek-Brown strength criterion.

The method to calculate the ultimate bearing capacity of soft sandy gravel rock foundation is established based on Hoek-Brown strength criterion.

Application of the Hoek-Brown criterion in rock slope stability analysis;

The indirect calculation method for the safety factor of slope based on generalized Hoek-Brown criterion;

Yielding approach index for surrounding rock mass of tunnel based on Hoek-Brown criterion

In order to make up the deficiency that the Mohr-Coulomb strength criterion can not dynamically reflect rock mechanical behaviors during the failure process and that it has some limitations in engineering simulation,the difference between Mohr-Coulomb strength criterion and Hoek-Brown strength criterion was analyzed and the relationship between them found.