TBM breakthroughs for Sao Paulo metro

摘要

More than two-thirds of the TBM bored section on Line 4 of Sao Paulo Metro has been completed, with shield excavation due to be completed on schedule by next June.rnThe 9.46m diameter EPBM was launched in early 2007 near Faria Lima station and has driven east more than 4,300m, passing through Fradique Coutinho, Oscar Freire, Paulista and Higienopolis-Mackenzie stations.rnSeli's crew driving the Herrenknecht shield for the Odebrecht-led joint venture contractor has been pushing progress since March when it was relaunched after a lengthy stop at Oscar Freire. It reached the station a year ago.