Case Study on the Construction of Main Tunnel and Parallel Safety Tunnel From Tupul to Imphal Railway Line under Northeast Frontier Railway, Manipur.

Abstract

As India’s Northeast region comes under the 6th most earthquake- prone belt in the world, the soil of young Himalayan region is weak due to the heavy monsoon for a longer period and working season is very less in the hilly region. The capital of Manipur, Imphal is the fourth capital city in the mountainous North-Eastern region to be connected with railways after three other Northeast states. The soil or the earth bearing capacity of the North Eastern region is much less as to compared other parts of the country. It had caused many problems that led to the deformations of the soil around the primary supports of the faces of the Tunnel-12 especially. Thus, geoconsultants and expert committees consisting of the various international consultants are also studying and giving guidance on the deformations formed on the strata of the earth.