A roadheader, also called a boom-type roadheader, road header machine, road header or just header machine, is a piece of excavating equipment consisting of a boom-mounted cutting head, a loading device usually involving a conveyor, and a crawler travelling track to move the entire machine forward into the rock face.
The first successful tunnelling shield was developed by Sir Marc Isambard Brunel to excavate the Thames Tunnel in 1825. However, this was only the invention of the shield concept and did not involve the construction of a complete tunnel boring machine, the digging still having to be accomplished by the then standard excavation methods.
Child Labor - Victorian Web. Article about child labor in the 19th century by David Cody, Associate Professor of English, Hartwick College.
Practical Tunnel Construction [Gary B. Hemphill] on Amazon.com. *FREE* shipping on qualifying offers. The only modern guide to all aspects of practical tunnelconstruction Practical Tunnel Construction fills a void in theliterature for a practical guide to tunnel construction.
Pipe jacking is a specialist tunnelling method for installing underground pipelines with the minimum surface disruption. Primarily used for new sewer construction it is also used for sewer replacement and relining, gas and water mains, oil pipelines, electricity and telecommunication installations, culverts and subways.
WITS SPECIAL EDITION - VOLUME I . A review of rock cutting for underground mining: past, present, and future . D. Vogt. Centre for Mechanised Mining Systems, University of the Witwatersrand Johannesburg, South Africa
Summary Statement . A comprehensive overview of health and safety in construction worldwide, including trades, typical hazards, methods of prevention, regulations, management structure, and major sectors.
KAMY series of Roadheaders offers the best cutting performance in a wide range of rock formations. Equipped with geometrically optimized transverse or longitudinal cutter heads, these flexible machines can be used to excavate subway tunnels, road tunnels, railway tunnels and water tunnels without using explosives.