Publication

Decision Aids for Tunneling A CATALOGUE FOR APPLICATION TO SMALL TUNNELS

2018
Student Projects

Abstract

The Decision Aids for Tunneling are a very powerful tool in assisting decision makers. They have been developed and applied over decades. As popular as they have become in big tunneling projects, they remain complicated and less used for small tunnels. The objective of this work is to devise a way to facilitate their use for small tunneling applications. After considering two different approaches, a “calculator” and a “catalogue”, the latter was developed. A Catalogue is arguably the best option to do so, as a compromise between both extremes of completely modeling each project and just not using the DAT. The users only have to consult the proper pre-developed chart in order to obtain the total construction time and cost for their project without using the DAT or running any simulations themselves. The Catalogue currently consists of 27 charts. Each one presenting results based on 50,000 simulations for each one of five length steps: 1 to 5

Official source

https://infoscience.epfl.ch/entities/publication/cb749cdd-fe2d-48c7-9f81-11d09a1cdb92

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2018
Student Projects

Abstract

Official source

https://infoscience.epfl.ch/entities/publication/cb749cdd-fe2d-48c7-9f81-11d09a1cdb92

About this result

Related concepts (23)

Tunnel

A tunnel is an underground passageway, dug through surrounding soil, earth or rock, and enclosed except for the entrance and exit, commonly at each end. A pipeline is not a tunnel, though some recent tunnels have used immersed tube construction techniques rather than traditional tunnel boring methods. A tunnel may be for foot or vehicular road traffic, for rail traffic, or for a canal. The central portions of a rapid transit network are usually in the tunnel.

Scanning tunneling microscope

A scanning tunneling microscope (STM) is a type of microscope used for imaging surfaces at the atomic level. Its development in 1981 earned its inventors, Gerd Binnig and Heinrich Rohrer, then at IBM Zürich, the Nobel Prize in Physics in 1986. STM senses the surface by using an extremely sharp conducting tip that can distinguish features smaller than 0.1 nm with a 0.01 nm (10 pm) depth resolution. This means that individual atoms can routinely be imaged and manipulated.

Quantum tunnelling

In physics, quantum tunnelling, barrier penetration, or simply tunnelling is a quantum mechanical phenomenon in which an object such as an electron or atom passes through a potential energy barrier that, according to classical mechanics, the object does not have sufficient energy to enter or surmount. Tunneling is a consequence of the wave nature of matter, where the quantum wave function describes the state of a particle or other physical system, and wave equations such as the Schrödinger equation describe their behavior.