Stability of slopes and cavities

Criteria of infinite elongation and associated strain rates at some critical stage, together with non-linear equations that take into account finite strains of unsteady creep, influence of stress state type and damage (the development of internal defects), are used for the determination of the ultimate state of ‘structures’. The critical displacements, loads and periods for development of conical, cylindrical and spherical voids under internal and external pressures are determined. The distribution of stress in a conical void subject to a vertical concentrated force at its apex is also investigated.

• 1 INTRODUCTION

• 2 CONSTITUTIVE EQUATIONS

• 3 CONICAL AND CYLINDRICAL VOIDS

• 4 SPHERICAL VOID

• 5 GENERALIZATION OF THE BOUSSINESQ PROBLEM

• 6 CONCLUSIONS

• 7 REFERENCES