CMRL launches work on Phase-II of underground stretch
The Chennai Metro Rail has fast-tracked the construction work on the underground metro project starting from Madhavaram to Taramani and the work is likely to get completed in the next five years. The contractors have resumed construction for the Phase -2 project work as they have started building the diaphragm walls in various locations across the stretch to create the underground metro between Madhavaram and Trapani. It comes under the Madhavaram to SIPCOT line, part of the Phase-II project. Diaphragm walls are beneficial in averting any settlement of soil as it is a box-type structure and must be built before the beginning of tunneling work. The building of the diaphragm walls takes around 6-8 months of period as it is a very complex job. There are various locations like Chetpet, Purasawalkam, Murari Hospital, Madhavaram, Ayanavaram etc., where the construction of diaphragm walls has already been started. Germany has provided the trench cutters used to dig deeper into the soils. As a matter of fact, the tunneling work is the most challenging task, and will start after the diaphragm construction gets over. Moreover, extra precautions and concerns are needed for the underground work to ensure the safety of roads and buildings in the neighborhood.
