Tunnelling in populated areas a challenge for CMRL
By Express News Service - CHENNAI
13th September 2012 09:14 AM
Metro Rail will be digging nine metres below the densely populated Washermanpet-Manali stretch and it will be one of the most challenging tasks, according to an expert.
Delivering the N V Arunachalam Memorial Endowment lecture, chief engineer (cut and cover structure) M Ramanathan, whose Hong Kong-based firm AECOM is handling the Chennai Metro rail project, said experts would be geo-technically monitoring the work along with crackmeters.
“Although the tunnel technology is improved, it will still be the biggest challenge for tunnelling experts as the tunnel criss-crosses many heritage sites and thickly populated areas.”
Currently, the Metro Rail was building diaphragm chambers for the underground stations and tunnelling work had started in one site only, Ramanathan said. The biggest challenge was also to ensure that water did not seep into the structure, he added.
He also said that the other major problem the tunnelling experts faced was the dry wells in the residential areas. These wells in the alignment of tunnels required to be backfilled, he said.
He also said Chennai would be the first city in India to have platform screen door facility. Platform screen doors (PSDs) at train or subway stations screened the platform from the train. They are a relatively new addition to many metro systems around the world.
- India's poor need more purchasing power, not doles
- 'Middle-class Indians hard hit by rupee's fall'
- Japan support sought for Vision 2023
- Rahul aide to pick Nellore MP candidate
- Kerala: PSC guidelines put candidates in a fix
- Dead son's education loan: Bank seeks its pound of flesh
- 'Kerala will lose 10 per cent of water resources by 2030'
- With Advani visit, Modi begins charm offensive
- Indian Coast Guards help rescue 26 crew from shipwreck near Yemen
- Thousands missing near Kedarnath shrine
- Tata Motors unveils 8 upgraded models of passenger vehicles
- Flaws in Koodankulam plant
- Army Major captures 'UFO' in Kerala
- Prices of 348 drugs to come down drastically from May 15
- 10-year-old prodigy to enter Harvard University
- 60 killed in Nigerian village attacks