Predicting performance is an essential task for efficient application of roadheader and is mainly related to evaluation of instantaneous cutting rate (ICR) for various cutting conditions. ICR is defined as the amount of rock excavated per time of cutting (tons or cubic meter/cutting hour).
Performance prediction is one of the major parameters for the success of roadheader applications and generally deals with machine selection, production rate, and bit consumption. Instantaneous cutting rate (ICR) is defined as the production rate during a continuous excavation phase in m 3 /h.
It is concluded that roadheader performance could be accurately predicted as a function of unconfined compressive strength, Brazilian tensile strength, rock quality designation, and alpha angle R 2 = 0.987. Sensitivity analysis reveals that the most effective parameter on roadheader performance is the unconfined compressive strength.
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 consumption. ... In this study, rock mass brittleness index (RMBI) is defined in order to ...
Correlations of observed roadheader performance with each author’s combination of laboratory measurements, with or without rock mass characteristics, have led to some success in “ball-park” predictions of future field performance.
Roadheader performance and related parameters are reviewed and their effects on the production and advance rate are discussed. Among the parameters influencing the machine performance, the most important one is the cutterhead design which could be optimized for a specific application. The
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 brittleness.
Excavation performance is a term used in underground construction to describe the influence of a number of parameters on the cutting rate and the tool wear of a roadheader.
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 ...
Prediction of roadheader performance by artificial neural network Article in Tunnelling and Underground Space Technology 44:3–9 · September 2014 with 34 Reads DOI: 10.1016/j.tust.2014.07.003
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.