Urban tunnelling in mixed soil conditions: A study of tunnelling works in Bangalore metro rail project, India

摘要

Carrying out civil works related to development of infrastructure towards Public Transport System is a challenging task in the present-day urbanization condition. Such Works in City like Bangalore where there is acute shortage of space and Geology controls the progress of construction of metro rail corridor. Bangalore Metro Rail Corporation Ltd. (BMRCL), taken responsibility for implementing Bangalore Metro Rail Project and faced several difficulties in implementing First Phase of this project. One of such challenges was construction of Tunnels and Underground Stations. Tunneling in mixed strata, below major roads and old buildings influenced the progress. Tunneling in ground filled with huge boulders and excavating very hard rock by controlled blasting for station excavation were some of such difficult works. Let us understand the challenges faced and solutions found for Tunneling and Station excavation.