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In those cases, the roadheader is the best option. On the other end, in areas where the rock may be less than 100 MPa, mining with a roadheader may be even cheaper than drill-and-blast. The advantage of a roadheader application is that it is a continuous mining operation.
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CPBSHJ says the chance to upskill to a roadheader operator is open to machinery operators from other industries, particularly those from the mining industry, and will open up long term opportunities to work on the myriad tunnelling projects across the city.
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excavation performance and tool wear in soft and hard rock. Every now and again problems have been encountered leading to high bit consumption and low cutting performance of roadheaders. In this paper the connection between some geological features, cutting performance and bit wear is presented.
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.