Prediction of cutting rates for boom type roadheaders : Aleman, V P Tunn Tunnlg, V15, N1, Jan 1983, P23–25

Abstract

With the increasing use of boom type roadheaders for tunnel excavation in strong rock, there is a need for a method of accurately predicting roadheader performance. Existing methods of predicting a machine's cutting performance are based on tests carried out on samples removed from proposed sites. Such tests do not take account of actual conditions even though they influence cutting performance. A method of strata assessment was therefore sought which would account for in-situ characteristics. Tests were also conducted to relate these to machine cutting performance. From the results of these tests a system was developed to forecast roadheader types in different strata conditions. (TRRL)