Tunnelling challenges on Mumbai's Metro Line 3 revealed
Tunnelling challenges on Mumbai’s Metro Line 3 revealed Tunnel boring machines (TBM) used to complete the tunnelling for Metro Line 3 in Mumbai were called on to undertake a hybrid method in order to deliver a platform tunnel in hard rock, as well as deliver some tunnelling firsts for India. The second of two 6.65m diameter Robbins Crossover XRE TBMs made its third and final breakthrough on the project delivered by a joint venture of Larsen & Toubro and the Shanghai Tunnel Engineering Company (L&T – STEC) in spring this year. However, the engineering challenges, such as the hybrid TBM/New...
Source: newcivilengineer.com