Abstract:

Underground Construction excavation (UC) by modern technologies with Tunneling Machines are widely applied over the world. The advantages of these machines are high speed excavation without risks during operating process. Supports are installed immediately during and after the process removing rock mass and soils from the working surface to ensure the stability of rock mass around tunnels. Works in the cycle such as excavation, transportation, installation of supports and stabilizing of tunnels are carried by mechanization, therefore reduced the workers in the tunneling process. In Vietnam, nowadays UC trends are more considered and attention, especially in Hanoi and Ho Chi Minh City to solve traffic jam on the streets in the rush hour. In addition, the North-South highway projects with hundreds of kilometers of tunnels through the mountains, irrigation, military, and mining tunnels have also received more and more attentions. In this article authors introduce tunneling technology by Tunnel Boring Machines (TBM) and the application trend of this equipment in the underground construction in Vietnam.