Roadheader applications in mining and tunneling ... of Colorado School of Mines on the use of historical data for use as a performance predictor model. ... of roadheader performance, only a few of ...
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A model to predict the performance of roadheaders based on the Rock Mass Brittleness Index ... Performance prediction is an important factor for successful roadheader application and generally deals with machine selection, production rate and bit consumpt
Prediction of roadheader performance plays a significant role in the plan of tunnel construction, which is influenced by different key parameters, including rock strength, discontinuity in rock mass, type and specifications of roadheader machine, and brit
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The (mud) rotary technique. In rotary drilling, a drill bit is attached to a length of connected drill pipe. The drill bit will be made of tough metals such as tungsten, and as the drill is rotated the bit grind up the rock.
Boring is drilling a hole, tunnel, or well in the earth. A boring machine illustration from the 1911 Encyclopædia Britannica. Mud log in process, ...
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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.