Analysis of chawri bazar section of Delhi metro tunnel

Present paper deals with the analysis of the Delhi Metro Tunnels of Chawri bazar area. The design and construction of metro tunnels and their linings require the knowledge of displacements and stresses in the surrounding rocks due to excavation. With the use of Finite Element Method (FEM), the analysis of the tunnels has been done under various loading conditions for Hauz Khazi tunnel near Amar Cinema. A comparative study was made with various loading cases, in this study elastic solutions were considered. Hauz Khazi section has two tunnels of diameter 3m and center to center distances between the tunnels are 6.26 m. Study suggest that loading of a assumed surcharge and water pressure acting all along the periphery of the tunnels with assumed lining thickness was found to be critical for this section.