Introduced A Method for Drilling a Subway Tunnel and NATM in the Industry

Excavation tunnels subway traditional and mechanized two methods of all sections are done.Method selection the tunnel to the tunnel, project scheduling, overburden status, urban location and traffic, geological conditions, ground level subsidence, and other considerations, the efficiency of the method is dependent.This paper introduces a a variety of tunnel excavation methods and the advantages and disadvantages of their perform operations and processes are briefly described.The purpose of this paper is to provide young engineers familiar with the basic concepts are the tunneling industry.