Impact of Tunnels in Environment

Many research works are going on to save or protect the environment from different hazardous or toxic gases, chemicals and other harmful effects. Different construction materials (both renewable & non-renewable) are used while constructing any structure, road, railway, tunnel, etc. But every Engineer must know the concept of sustainable development and the particular application of construction materials in its related areas without effecting the green environment. To satisfy the needs, huge rush, demands, time saving etc., of people in roadways, Traffic or Road Tunnels are constructed. In this paper the importance of ventilation in construction of tunnels is highlighted as because different harmful or toxic gases or chemicals are generated by the vehicles passing through it. The aim of this paper is to bring the awareness about the tunnel environment while constructing Tunnels and to minimize the hazardous effect inside the tunnel and also to the environment.