This practical guide describes the stage-by-stage development of a method for predicting
the penetration rate (PR) and the advance rate (AR) for tunnel boring machines based on an …

Percussive blast hole drills were observed in eight rock types at an open pit mine and three
motorway sites. The net penetration rates of the drills were calculated from the performance …

Circular diamond saw of wear is affected by a range of factors. However, the principal factors
that require consideration in predicting wear rates are the type of diamond saw, the saw …

Disc cutter wear is one of the comprehensive results of the rock–machine interaction in
tunnel boring machine (TBM) tunneling. The replacement of the disc cutter is a time …

The focus of this study is to statistically evaluate the correlations between brittleness,
destruction specific energy (SEdes), and both cut-ability and drillability using the optimum …

Rock abrasivity is an important factor that affects tool wear and tool parameter design,
construction efficiency, and cost budgeting during rock excavation. The Cerchar abrasivity …

Energy efficiency (specific energy) and penetration rate in rock drilling processes are
dependent on various operational variables (applied load, torque etc.) in addition to the …

Rock abrasiveness is defined as the abrasive effect of a rock on a metal surface.
Abrasiveness influences the capacity of various types of soil to wear down excavation tools …

Abstract Rock drilling Penetration Rate (PR) is influenced by many parameters including
rock properties, machine parameters of the chosen rig and the working process. Five …

An experimental study was carried out with the intent of establishing the most significant rock
properties influencing sawblade wear performance in the processing of 'true'granites. To …