Creep Behavior of Rocks and Its Application to the Long-Term Stability of Deep Rock Tunnels

Since underground structures such as tunnels are inevitably surrounded by rocks, their long-term safety and stability primarily governed the comportment of these materials. Being able to express time-dependent behavior creep is one most interesting mechanical properties considered in study tunnels. Based on relevant research efforts, this article aims provide a comprehensive review pertinent information rock its potential influencing factors. It also presents latest progress constitutive models discusses applicability deep structures. The results show that significantly influenced various factors both external internal. These mainly hydraulic pressure, stress level, water content, temperature, damage, time-to-failure. For instance, lifetime andesite drastically reduced presence water. about 180 times shorter wet conditions than dry conditions, under same conditions. By combined influence high stresses, pressures, temperatures, rupture occurs semi-brittle manner for types hard rocks. characteristics installation period lining have strong evolution rocks surrounding suggested despite colossal efforts already made area, more accurate still needed adequate applications Accordingly, key perspectives future investigations highlighted. This work can serve good reference establishment new aimed at improving accuracy, facilitate appropriate actions predict realistic situations.