Deformation behaviour of tunnels under different loading conditions: State of art

Abstract

Construction of tunnels as transport medium has become a very important part in various civil engineering practises. Tunnels are constructed and commonly being used for different purposes such as for underground mining, underground parking facilities, military purposes, underground gas pipelines, transportation purposes in metro cities and many more fields. In the present study, the deformation behaviour of tunnels under various loading conditions that may be static load acting on the tunnels due to the overburden pressure, dynamic load due to the earthquakes and impact load causes due to terrorist activities is studied. Various factors which may be responsible for causing deformation cracks in tunnels are being studied. Various theories on stress distribution in tunnels are given by a lot of researchers were also studied.