The Development of Roadheader and it's Future

Autor:	Hideo Imai, Sumio Yamada
Rok vydání:	1998
Předmět:	Digging Heading (navigation) Engineering Reaction Mining engineering business.industry Cutting force Forensic engineering Coal mining Roadheader business
Zdroj:	Shigen-to-Sozai. 114:693-698
ISSN:	1880-6244 0916-1740
DOI:	10.2473/shigentosozai.114.693
Popis:	Roadheader was developed as a heading machine of coal mine in 1 9 6 6 in Japan, following to other countries. At first, it cut coal seams. And it has been improved to cut more severe strata. In Japan there was a big market for digging tunnels in the field of civil engineerings. Roadheader has been widely used for a heading machine of tunnels in Japan. The specification to be attained for tunneling was slightly different from that of coal mine. To improve cutting abilities, a big cuttinng force and a machine stability is most important. But increase of cutting force is restricted by a machine weight. Because it is inevitable for a selecting cutting system to receive a reaction force by a friction of machine weight. In future Roadheader will become a more powerful and useful machine.
Databáze:	OpenAIRE
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