north east frontier railway (tunnel 21-22)

• Scope of Work : Construction of Single Line BG Tunnel no. 21 ( App. Length 630 RM ) at Km. 39.507 to Km. 40.137 & Tunnel No. 22 (App.Length 178 RM ) at Km. 42.75 to Km. 42.930 in
  between Station Mualkhang & Sairang in connection with construction of New Railway Line Project Bhairabi – Sairang (Mizoram) of NF Railway (Construction)

Salient Features

• Method of Tunneling : NATM
• Length of Tunnel : 630 Meters & 204 Meters
• Underground Excavation : 56,500 Cum (App.)
• Open Excavation : 537000 Cum (App.)
• Underground Shotcrete : 10,450 Cum (App.)
• Underground Concrete : 13, 100 Cum (App.)
• Steel : 2612.00 MT (App.)