HYDERABAD: As the proposed works of GHMC flyover and underpass at Mindspace junction overlap with Metro Rail Station at Raidurg, MAUD Special Chief Secretary M G Gopal instructed that a joint working group comprising of LTMRHL, GHMC and HMRL should meet regularly under the guidance of the technical experts for completing the works on time.
Gopal held a meeting with HMRL Managing Director NVS Reddy and GHMC Commissioner B Janardhan Reddy, structural engineering experts and consultants last evening on overlapping of GHMC flyover and underpass at Mindspace junction with Metro Rail Station at Raidurg.
MS Madhav, Retd Prof of IIT Kanpur, who was invited specially for giving his technical opinion stated that blasting of the rock for the underpass have to be completed before taking up metro rail pillar foundations.
He further said that the metro rail pillar foundations are very sensitive to vibrations and any settlement will have a cascading effect on rail track and operations of trains.
The bearing capacity of soil should be properly apportioned and shared wherever integrated construction of the underpass and metro rail is taken up. Special care needs to be given to the underpass box proportion, he advised.
KVL Subramaniam, Prof of IIT, Hyderabad and special invitee stated that the metro rail structure on a single pillar is very sensitive to vibrations and as such it requires a lot of care during construction of the underpass, so as to see that the structure is not affected due to any external effects.
He advised that the total blasting operation and rock cutting should be completed on the stretch before taking up any metro rail construction activity.
Earlier MP Naidu, project director, LTMRHL made a detailed presentation on different steps involved in construction of Metro Rail station at Raidurg and the time required for each activity.
NVS Reddy requested all the stakeholders to examine each other’s proposals and arrive at a technically feasible solution so that both the works of Metro Rail and GHMC can be executed in a time-bound manner.
He also requested GHMC to prepare the storm water drain plan for the VUP (Vehicular Under Pass) since the area does not have regular storm water drain system and the underpass will get flooded and affect the Metro Rail pillar foundations during rains, if proper drain system is not developed simultaneously.