With the normal numerical value simulation test method,the paper studied the bolt support parameters affected to the deformation and failure of the mining gateway.

The deformation and failure of metals are complex multi-scale processes.

Hence the internal structure of the materials must be considered in the study of deformation and fracture of the materials.

The paper presents a theoretical study of the temporal features of deformation and fracture of rock and rock mass and an investigation of the strain rate dependence of strength and its mechanism.

Structural hierarchy and dynamic deformation and fracture of solids;