Two tunnel projects finished in Delhi
The Delhi Metro is looking like to be working overtime on Phase III as its 2016 deadline is drawing close. On Tuesday, it had announced completion of two tunnels on the Janakpuri (West)-Botanical Garden corridor.
Two parallel tunnels at Dabri Mor were completed with help of two tunnel boring machines. The two TBMs which is named ‘Riddhi’ and ‘Siddhi has emerged at the Dabri Mor station after boring the two 1.2km long twin tunnels. While one of the TBMs was inserted in December last year, the other TBM had started the work in the month of January.
These are the first tunnel works that has been completed on this corridor. Delhi Metro Rail Corporation spokesperson Anuj Dayal stated that this is the first occasion that twin tunnels have been completed together in any Metro project in India. The decision to go for a twin TBM breakthrough was taken as because both TBMs were progressing almost simultaneously. The first such instance of a twin breakthough had happened during a work on the 8.6km long Toronto – York Spadina subway extension in the year 2002. But this is a first that India has experienced.
Source: The Times of India
