摘要
Based on the theory of elastic mechanics,and using the typical rupture model of shallow earthquake,the authors considered the shallow earthquake as a plane mechanical problem,which was constructed the corresponding mechanical model.By the stress components' formulas of the semi-infinite model acted by the finite even shearing force,the main stress is deduced.It is clear that the sector on the right of the center section is squeezed zone,where the maximum principal stress points at the "source of stress",and that on the left is tensile zone,where the minimum principal stress points to the "source of stress".
Based on the theory of elastic mechanics, and using the typical rupture model of shallow earthquake, the authors considered the shallow earthquake as a plane mechanical problem, which was constructed the corresponding mechanical model. By the stress components＇ formulas of the semi-infinite model acted by the finite even shearing force, the main stress is deduced. It is clear that the sector on the right of the center section is squeezed zone, where the maximum principal stress points at the ＂source of stress＂, and that on the left is tensile zone, where the minimum principal stress points to the ＂source of stress＂.
