Friday, January 4, 2013

Borewell in Washermenpet-Manadi stretch pose challenge to Metro rail tunneling operations


C Shivakumar
Chennai:

Chennai Metro Rail is facing challenges while tunneling in the stretch between Washermenpet to Manadi as the owners of the building have not divulged the borewells that need to be shut down for the safety of the residents.


Chennai Metro Rail General Manager (construction) V Somasundaram said tunelling operation between Washermenpet-Manadi stretch was affected after a borewell was not filled.

“A small spare parts shop did not intimate us about the borewell. When the gigantic tunnel boring machines was burrowing beneath a few days ago, the land caved in thus affecting the stacking area,” said Somasundaram.

Interestingly, Chennai Metro Rail came forward and agreed to pay compensation to the shopkeeper based on evaluation done by a third party. Surprisingly, after the incident it was found that two more borewells required to be closed.

“These sort of things affect the work,” said Somasundaram. He said that Chennai Metro Rail has asked the Metro Water to carry out survey of each and every house in the area again and identify borewell that has not been closed.

Interestingly, it was on December 2011, Chennai Metro Rail issued notices to the property owners who stay along the metro routes to seal the borewells and open wells for the safety of the residents. Till now 140 borewells have been sealed. But after the incident Metro Water does not want to take chances and has once again started the survey.

Somasundaram said that on Wednesday, metro rail has sealed four to five borewells and have resumed the work on Wednesday, which he describes it as challenging.

“This is the toughest terrain for us as this area contains very old buildings. We are continuously monitoring the settlement. We have already captured photographs of these ancient buildings with date and are regularly comparing with the existing building,” he said.

Currently, Metro rail is using six instruments, including crack meter and optical meter to monitor the tunneling operations. But then it also requires the cooperation of the residents to ensure the city gets its metro rail on time.

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