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North East Frontier Railway (Tunnel 21-22)

  • Location : Mualkhang & Sairang, Mizoram State
  • Client : Northeast Frontier Railway
  • Date of Completion : December 2017
  • Value of Work : 89.94 Crores
  • 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.)