Koraput Jagdalpur Doubling Project On Kk Line: Design, Proof Checking, Construction, Testing And Commissioning Of Ballast Less Track Including Other Allied Works For Seven Tunnels (Tunnel No.T1 From Ch. 1705 M To 2010, T1 A From Ch. 2160 M To 2400, T2 From Ch. 3240 M To 3560 M, T3 From Ch. 4513m To 4620m, T4 From Ch. 5120m To 5400 M, T5 From Ch. 6150 M To 6320 M &Amp T6 From 10027 10312 M (Total 1987= Tunnel Length Of 1707 M Plus 280 M I.E., Length Of Approaches On Either Side Of Tunnels )