Explosion Effect and Angle of Dip of Uncontinuous for Optimum Depth of Tunnel

Design of underground structure against of kinds of bombs explosion duration influence in earth. In this paper at first is defined component of underground structure and then are considered surface explosion and behavior of tunnel lining. Because aim of construction of tunnels is protecting of people, instrument and equipment versus any kinds of attacks.However a safe underground structure is a shield and it can propagate waves of explosion. Also will be discussed the parameters of dynamic loading and transmission wave into rocks and soils. In this research is used UDEC software which is based on finite difference method. Which this software can analysis of dynamic of uncontinuous rocks. For loading, it is necessary to study propagate and damp of wave during surface explosion. Also we will explain about stability and optimum depth of tunnels.