Classification of tunnels according to purpose, conveyance, material, position or alignment, shape and size of tunnels under different conditions.
Answers
tunnel according to the proper sequence material position is agreement shape and size of tunnel under different condition is upside and downside
Tunnels are underground passages used for transportation. They could be used for carrying freights and passengers, water, sewage, etc Tunnels are more economical than open cuts beyond certain depths. Tunnels avoid disturbing or interfering with surface life and traffic during construction. Tunnels prove to be cheaper than bridges or open cuts to carry public utility services like water, sewer and gas. Feasibility of these constructions in natural materials, such as rock and soil, causes the geological conditions to play a major role in their stability. Aspects of major importance and that is decisive for the feasibility of a tunnel project is geological conditions, construction time and costs. The objective of this lesson is to provide the general aspects of importance in tunnels, their types and methods of tunnelling.