Recent studies on buried explosions in dry soils in proximity to buried structures

摘要

The problem of a buried explosion in soil,the resulting shock waves propa-gation and their interaction with a buried obstacle is of great interest and of much complex-ity.The proposed paper aims at summarizing a series of recent studies conducted by the authors,aiming at extending our understanding of several key issues that are related to the problem.It includes the derivation of a constitutive model that is characterized by irrevers-ible bulk compaction (with or without full locking) and study of an interaction of the shock waves with a rigid obstacle as well as with elastic plastic tunnel lining shells.The study of the interaction with a structure includes the study of the contact stress distribution along the buried structure's perimeter and the soil free surface motion depending on the soil and lining properties,and on the scaled distance between the charge and the structure.In addition the paper studies the shock waves interaction with an intermediate barrier that is composed of rigid inclusions that are placed between a lined tunnel and a buried charge.