Category: Tunnels
Difference between Natural & Mechanical Ventilation in Tunnel Tunnel ventilation is a technique, that provides fresh air inside the tunnel and removes dust from the tunnel during and after construction. Following are the 6 difference between natural ventilation and mechanical ventilation in tunnel. Natural Ventilation 1. Natural ventilation is achieved by providing shaft at a … Continue reading Difference between Natural & Mechanical Ventilation in Tunnel
Tunnel Lighting Various tunnelling work and operations can not be carried out successfully and satisfactorily if there is insufficient light in the tunnel. It is suggested that light with an intensity of 260 lumens per m2 in the working area is sufficient for the proper effectiveness of tunnelling work. Following are the situation and locations … Continue reading Tunnel Lighting & Their Types
18 Safety Precautions in Tunnelling Tunnelling is an underground construction and there are many types of risks during construction. Therefore, it is essential to take measures to protect the workers from accidents. Following are the 18 Safety Precautions in Tunnelling. 18 Safety Precautions in Tunnelling 1. The floor of the tunnel should be kept dry … Continue reading 18 Safety Precautions in Tunnelling
Maintenance of Railway Tunnels Generally, P.W.I. inspects every tunnel in his section, and he is personally responsible for maintaining the track through tunnel in perfect running condition. The following points should be noted in connection with the maintenance of railway tunnels. 1. It should be noticed whether the structure of the tunnel has weakened, cracked … Continue reading Maintenance of Railway Tunnels
Classification of Tunnel Drainage System Tunnel Drainage systems are classified as: (1) Drainage system provided at the time of construction or temporary drainage system.(2) Drainage system provided in completed tunnels or permanent drainage system. (1) Temporary Drainage System This is provided to remove groundwater from the tunnel at the time of construction. In this system, … Continue reading Classification of Tunnel Drainage System
Methods of Ventilation in Tunnels Following methods are implemented for ventilation in tunnels: Natural MethodMechanical Method Methods of Ventilation in Tunnels 1. Natural Ventilation When a tunnel receives fresh air and automatically removes the dust without the use of mechanical appliances, this sort of ventilation is called natural ventilation. This type of ventilation can be … Continue reading Methods of Ventilation in Tunnels
Requirements of Good Ventilation System in Tunnels A good tunnel ventilation system should meet the following requirements: 1. It should reduce the dust produced by the tunnel activities to a safe limit. 2. It should quickly clear the fumes generated by blasting from the working face. 3. A good ventilation system should be such that, it can prevent … Continue reading Requirements of Good Ventilation System in Tunnels