Purpose. Based on the analysis of calculation strategies (analytical, experimental, numerical) and their methodological features, to substantiate most appropriate one for study design inclined tunnel under construction by NATM. Methodology. To achieve this goal, an computational was performed. The specifics each strategy conditions underground workings case NATM are analyzed. It is determined h...

Transportation tunnels are the most preferred method to facilitate transportation in mountainous and rough terrains. The excavation choice of fortification tools tunnel construction depend on geological structure route. Correct formation determination will reduce cost eliminate many risks. Black Sea region has a very rugged terrain. obvious used overcome terrain is road tunnels. rock classifica...

At present, almost all mountain tunnels in Japan are excavated and constructed utilizing the New Austrian Tunneling Method (NATM), which was advocated by Prof. Rabcewicz of Austria in 1964. In Japan, this method has been applied to tunnel construction since around 1978, after which there has been a subsequent decrease in the number of casualties during tunnel construction. However, there is sti...

The T26 tunnel was designed within the scope of Ankara-Istanbul high-speed railway in accordance with speed 250 km/h. Some serious problems and excessive deformations were encountered during excavation works. caused subsidence on surface Tunnel Boring Machine (TBM) became stuck; therefore, works suspended. Design for re-excavation extracting TBM carried out re-designed by New Austrian Tunneling...

The comparison of alternative construction methods is one of the principal reasons for using simulation to model construction processes. The efficiency and effectiveness of such comparisons can be greatly improved by the prudent use of “matched pairs,” a variance reduction technique based on dedicated and fully synchronized random number streams. The basic methodology is illustrated by using th...