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Tunneling Methods Overview by manucperingelil is a document available to read on EtoBox.

This document describes several tunneling methods including the heading and bench method, drift method, pilot tunnel method, and soft ground tunneling methods. The heading and bench method involves excavating the top half of the tunnel (heading) first before excavating the bottom half (bench). For the drift method, a small initial tunnel (drift) is dug and then expanded out to the full tunnel size. The pilot tunnel method involves initially digging a smaller pilot tunnel used to access and ventilate the m

Author

manucperingelil

Language

EN