Hardrock Tunnel Boring Machines - Bernhard Maidl, Leonhard Schmid, Willy Ritz, Martin Herrenknecht - Google Books

https://books.google.de/books?id=y9kNt17Ki1gC

This book covers the fundamentals of tunneling machine technology: drilling, tunneling, waste removal and securing. It treats methods of rock classification for the machinery concerned as well as legal issues, using numerous example projects to reflect the…