Hyderabad Airport Metro line: inspection to asses the challenges for construction

HYDERABAD: Subodh Jain, Hyderabad Airport Metro Limited (HAML) adviser, and HAML managing director N.V.S. Reddy assessed the challenges to the construction of the Shamshabad airport line on Saturday.

These included the crossing at Mindspace junction, which has an underpass, rotary and flyover, at a height of about 21 metres (69 feet). The team studied different options of laying the viaduct with smaller spans or erection of a 90-metre (295 feet) long special span with a composite steel girder.

Different options for the new integrated Raidurg station of the extended Blue Line and the Airport Metro would be examined from a passenger convenience point of view. This multi-level interchange station will be designed to avoid shifting of the extra high voltage 400 kV underground cables adjacent to it.

The viaduct crossing the multi-level Biodiversity junction flyover at a height of about 20 metres (66 ft) was another challenge. The HAML pillars will be located away from the flyover pillars to avoid affecting them.

The Nanakramguda junction station will have to be designed as a portal structure — with three pillars, one in the central median and a pillar each on both edges of the road —as the median is in a curve and the station is required to be nearer to the junction to cater to the traffic coming from different directions.

HAML chief project manager B. Anand Mohan, general manager M. Vishnuvardhan Reddy, superintending engineer Y. Sayapu Reddy, and deputy chief engineer (Railway) J.N. Gupta participated in the exercise which studied the technical challenges involved in the stretch from Raidurg station to Nanakramguda junction.