1 NATM (New Austrian Tunneling Method ) in Tunneling Def of Tunneling: Underground passage dug though hill, under road or river etc. for passage of road, train etc. Various…
1 NATM (New Austrian Tunneling Method ) in Tunneling Def of Tunneling: Underground passage dug though hill, under road or river etc. for passage of road, train etc. Various…
19 Special Tunnel Blasting Techniques for Railway Projects More Ramulu Central Institute of Mining & Fuel Research, Nagpur, India 1. Introduction Excavations of tunnels…