Dual direction sides dump equipment of loader;

Biomechanical analysis of the posterior pedicle screw and the lateral mass screw on the atlas;

The lateral mass screw technique applying to the unstability of lower cervical spine;

Applied anatomy of the lateral mass of cervical vertebrae and its significance in the plate-screw internal fixation;

Deformation characteristics of the soil around the foundation pit with lateral unloading

Following the characteristics of foundation pit excavation,the control procedure for the commonly-used triaxial apparatus is improved and the process for the Ko consolidation-lateral unloading just like the foundation pit excavation is simulated.

This paper simulates the stress paths in unloading state during excavation effect of lateral unloading on shear strength of soil mass is studied, and the reasons are analyzed according to the microstructure of soil samples.