Influence of Shotcrete on Increase Safety Factor in Underground Tunnels Support Structure to Versus Earthquake Load

During new century, underground structures are important research in science of mining, transportation, fortification and so on. This knowledge will be improve power of military in countries and it will be develop armament of military and also will be rise the security of underground structures, such as tunnels and buildings of underground.The aim of this research consist design of solid structure, resistance and support underground structures. Utilize of shotcrete in underground cavities is for interim structure and sometimes for perennial structure, which its history return about one hundred years ago. However, initial utilization of shotcrete was support of stones in contrast of weathering. Yet, nowadays shotcrete will be substitute inverse of underground concrete structures.This paper shows the shotcrete specification in underground structures will be resistance during seismic loads, and also we will consider shotcrete in opposite of seismic loading effects on state of tunnel lining