Thursday Jan,09 2014
The Klang Valley MRT Project celebrated another major achievement with the breakthrough of the world’s first Variable Density tunnel boring machine, used for the MRT Sungai Buloh-Kajang Line.
The tunnel boring machine (TBM), called Cochrane 2, was launched from the Cochrane Launch Shaft in Cheras on 22 July 2013. It excavated a distance of around 1km through limestone formation to complete the tunnel at the Pasar Rakyat Station.
The breakthrough marks the completion of the first section of twin tunnels (between Cochrane and Pasar Rakyat Station) for the 9.5km MRT Sungai Buloh-Kajang Line underground alignment without any major issues.
The Variable Density TBM is the first of its kind, designed and jointly developed by the MRT Project’s underground works contractor, MMC Gamuda KVMRT (T) Sdn Bhd and leading TBM manufacturer, Herrenknecht AG of Germany specifically for tunnelling beneath Kuala Lumpur.