Modern technology has been used to build tunnels in recent years by means of drilling machines (TBM) that were used for civil engineering work in large cities to reduce the harmful effects of spending on the surface of the earth significantly. To build the tunnel, numerical modeling was used on the basis of the finite element method to predict stress behavior during the tunnel construction proc...

By the year 2035 it is estimated that Delhi and Mumbai will become two of most populous cities around globe. The massive population growth rate has led to rise land scarcity, urbanization, industrialization developments for rapid transit systems have made accordingly. Modern comprise Metro rails subways etc., increase underground-construction activities. Nowadays, tunnel-construction process he...

The simulation of the advancing process for arbitrary alignments during shield tunneling requires a continuous adaption of the finite element mesh in the vicinity of the tunnel face in conjunction with a steering algorithm for the Tunnel Boring Machine (TBM) advance. Moreover, the finite element mesh should match the actual motion path of the shield machine resulting from the FE-analysis in eac...

In a novel shield tunneling method, the tunnel lining is produced by an extrusion process with continuous shield advance. A robotic manipulator is used to build the tunnel supporting formwork, consisting of rings of steel segments. As the shield of the tunnel-boring machine advances, concrete is continuously injected in the space between the formwork and the surrounding soil. This technology re...

Rock mass conditions are extremely sensitive to tunnel boring machine (TBM) tunneling. Therefore, establishing a surrounding rock excavatability (SRE) classification system applicable TBM tunnels. Accurately and intelligently identifying grades can also facilitate efficient tunneling intelligent construction. Specific excavation penetration rates were used evaluate SRE. Their correlations with ...

This paper aims to estimate the distribution and magnitude of the excavation damaged zone (EDZ) caused by the tunnel boring machine (TBM) through dynamic three-dimensional large deformation finite element analysis. Coupled EulerianLagrangian (CEL) analysis was used to consider the large deformation behavior during TBM excavation. The analysis model was verified based on estimations reported in ...