Jul 26, 2011 · Tunnel Construction Methods and their comparison . 1. Introduction – This paper gives a general description of the tunnelling techniques such as cut and cover, drill and blast, bored tunnelling and sequential mining construction, reviewed for possible use in various projects.
Cut and cover construction is one of the methods that will be used to build the new Metro Tunnel stations. As the name suggests, cut and cover construction involves using excavation equipment to dig a large trench or rectangular hole in the ground which is then covered by a concrete deck.
Subway construction can use two different methods: "cut and cover" and "deep bore." Cut and Cover Method of Building a Subway Older subway systems, such as those found in Toronto and New York, were built with a method known as "cut and cover". In "cut and cover" tunneling, the pavement of the street ...
Apart from cut and cover and blasting, Tunnel Boring Machine (TBM) is a commonly used construction method in building tunnels nowadays. The type of tunnelling method to be used depends on the specific geology of the project, tunnel length or diameter, logistical arrangements, environmental and other factors.