A roadheader, also called a boom-type roadheader, road header machine, road header or just . compression fracture micro-wheel heads like those on larger tunnel boring machines, a slicer head like a gigantic chain saw for dicing up rock,.
Aug 1, 2018 . PDF | Mechanical excavation of tunnels using Road-header is . Accurate and reliable productivity prediction for the selected machinery is required for time . Two Road-headers are used to excavate 1.2 km tunnelling project.
The Shaft Boring Roadheader (SBR) was developed for the mechanized sinking of . In contrast to the Shaft Boring Machine () with an installed hard rock . to conventional processes and, at the same time, high tunnelling performances.
header application is the ability to evaluate and predict the machine performance. The main objective of this re- search study is to investigate the cutting performance of roadheaders in coal . ers, impact hammers and tunnel boring ma-.
Sep 16, 2013 . The mechanism of cutting process of roadheader with cutting head was . with special machine tools (such as cutting picks); the coal and rock load ... of a roadheader in an inclined tunnel," Tunneling and Underground.
In contrast to the Shaft Boring Machine () with an installed hard rock . the SBR has been equipped with a roadheader boom and a rotating cutting drum. . to conventional processes and, at the same time, high tunnelling performances.