D-Wall Construction Commences For Agra Fort Underground Metro Station
Agra, May 22 (TNA) In a major breakthrough step for Agra Metro underground section, the civil construction work of D-wall has commenced in Agra Fort Metro Station. This is one of the most important step in making the wall of an underground metro station. It is a cage of reinforcement which is vertically inserted inside the ground, almost like a wall, over which concrete is poured and a wall like support structure is then made.
The Underground (UG) Section of Agra Metro’s Corridor-I from Taj East Gate to Sikandara is marked between Taj Mahal Metro Station to RBS College Metro Station.
What is D-Wall?
The D-wall can be understood as the boundary of a Metro Station. Before starting the construction of an Underground Metro Station, this wall is constructed as a security enclosure around it. The D-Wall will be constructed with the rectangular panels. This wall will exist up to a depth of approximately 21 meters. The D-Wall gives strength to the under-construction underground station walls and paves way for TBM( Tunnel Boring Machine) to construct a tunnel for the underground section.
UG Metro Stations are Being Constructed With Top-Down Method
In all, Seven Metro Stations are to be built in the Underground Section for the first corridor of Agra Metro Rail Project, viz Taj Mahal, Agra Fort, Jama Masjid, Medical College, Agra College, Raja Ki Mandi and RBS College.
The underground stations of Agra Metro will be prepared with the Top-Down Method i.e. construction work will be done from top to bottom. This system is being adopted to minimize the impact on traffic as the barricading on the road will be reduced after the construction of the first floor starting from the road level.
The construction work of the station below the road will continue and the movement of vehicles on the road will also continue smoothly eventually.