On the basis of introducing the method of calculating the stress of surrounding rocks and the failure character of rock mass, the authors derived the equation of determining the minimum thickness of overlying rock formation with the Hoek-Brown strength criterion.

On the basis of introducing the possible failure patterns and stress calculating method of tensile foundation on rock mass, the authors introduce the method to calculate the allowable uplift force and ultimate bearing capacity with Hoek-Brown strength criterion and illustrate the design steps of tensile foundation with an example.

Family and Family Structure: Concept, Type, and the Reflective of these Empirical principles;

Study on the ultimate pullout force of pre-stressed cable based on nonlinear Mohr-Coulomb failure criterion;

From these points, a new failure criterion is given based on the prerequisite that the action of the whole three principal shear stress couples acting on the dodecahedron element should be taken into account in the establishment of failure criterion.

Based on these concepts,a new failure criterion is given out for geomaterial.

A simplified strength criterion for concrete under biaxial stresses;

Standard space theory of strength criterion for anisotropic internal friction materials;

A model of the strength criterion of shale;

Based on this test,failure mechanism has been widely researched;and shear strength criteria have been put forward,such as Jennings method,Lajtai rock theory,shear theory in fracture mechanics,combined failure theory of tensile and shear.

A new strength criterion was deduced based on the existed strength criteria for cohesionless soil such as the SMP model and the Lade model.

This paper studied Hoek s rock strength criteria and then applied the criteria to the evaluation of rock mechanical parameters of Xiaowan dam shoulders.