Research on entropy catastrophic regularity and failure criterion in the deformation and failure process of rocks;

Study on slope failure criterion based on strength reduction and gravity increase method;

Study on plane instability model and failure criterion of horizontal-strata landslide

Numerical simulation was made on the thick- ness of mid-pillars in small internal tunnel with finite element method;fitting curve of maximum tensile stress,yield func- tion criteria and small interval was obtained through Griffith damage criteria and Drucker-Prager criteria.

The old and the new safety regulations for blasting are compared and the blasting damage criteria is analyzed.

To predict the cracking of rice grains during drying, transporting and subsequent storage, information must be available about modulus of elasticity, such as failure force, failure stress and failure energy.

The failure mechanism of steel fiber-reinforced concrete bridge pavement in concrete highway bridges was studied by utilizing the model in conjunction with the linear elastic fracture mechanics,and the influence of temperature variation on the failure stress of pavement layer or failure moment was considered.

This paper uses circular disk models in experiments to measure failure stresses around the hole,because its axial symmetry can decrease the material discrete influence.