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.[1]
The cutting head can be a general purpose rotating drum mounted in line or perpendicular to the boom, or can be special function heads such as jackhammer-like spikes, compression fracture micro-wheel heads like those on larger tunnel boring machines, a slicer head like a gigantic chain saw for dicing up rock, or simple jaw-like buckets of traditional excavators.[2]
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Dr. Helmut Schneider (September 1988). "Criteria for Selecting a Boom-Type Roadheader". Mining Magazine. The Mining Journal, Ltd. p. 183.
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"Tunnel Virtual Team - Questions and Answers from Ask the Expert". US Department of Transportation Federal Highway Administration. 2006-08-01. Retrieved 2006-09-15.
A roadheader, also called a boom-type roadheader, road header machine, road header or just header machine, is a piece of excavating equipment consisting...
used to speed up work, as it provided another two working faces for the roadheaders used. The shaft is today used for ventilation and emergency egress, in...
the longer Burnley Tunnel that carries traffic in the other direction. Roadheaders were used to dig the bored section of tunnel, while at the eastern end...
designed as the alien creature, and at the start of Forbidden Valley was a roadheader surrounded by alien theming, known as the Nemesis Drill/Gun. This decoration...
Austrian tunneling method – Method of modern tunnel design and construction Roadheader – Excavation equipment Subterrene – Vehicle that moves through solid rock...
took him in. Norm (voiced by Dustin Demri-Burns) is a giant, light blue roadheader whose only spoken dialogue is "Dig, Dig, Tunnel, Tunnel!" Two-Tonne (voiced...
or killed, but the nearly-completed tunnel was flooded, submerging a roadheader. Repairs were completed, and the city was cleared of any wrong-doing....
constructed using a combination of open box and cavern construction. Roadheaders excavating the tunnel from Woolloongabba railway station reached the...
surrounding areas. By early 2019, the platform caverns were being excavated by roadheader machines. In August 2019, the first tunnel boring machine (TBM), Nancy...
approved in April 2018, began construction in 2019. In February 2021, roadheaders carved from the M4-M5 Link tunnels into the M8 tunnel, connecting the...
Sadi Evren; Ocak, Ibrahim (12 Feb 2020). "Performance prediction of roadheaders using ensemble machine learning techniques". Neural Computing and Applications...
usually excavated using a tunnel roadheader or a milling head attachment on an excavator. The spoils behind the roadheader conveyor belt are dumped on the...
finished the boring machines had placed 37,000 precast linings. Smaller roadheader machines began from the southern end in February 2007. By September 2008...
tunnel was mined through the Austin Chalk underlying the airport by a roadheader, a large rock cutting machine that was nicknamed "Big Mike," at a rate...
of £1 million to August 1990. The colliery received a single new Dosco roadheader in March that year. However, a geological report issued in the autumn...
underneath a layer of that kind of rock. The cavern was excavated using roadheaders. During construction a toothpaste box, a perfume bottle and bottles that...
at either end of the tunnel at Surry Hills and Woolloomooloo. Seven roadheaders were utilised for the tunnel boring, with the rock ceiling then reinforced...
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