Premium
Abrasiveness Assessment for Hard Rock Drilling
Author(s) -
Plinninger Ralf J.
Publication year - 2008
Publication title -
geomechanik und tunnelbau
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.317
H-Index - 18
eISSN - 1865-7389
pISSN - 1865-7362
DOI - 10.1002/geot.200800004
Subject(s) - drilling , drill , measurement while drilling , excavation , drill bit , mining engineering , geology , engineering , petroleum engineering , geotechnical engineering , mechanical engineering
The wear of drilling tools in mining and tunnelling has always been a predominant factor for the costs of hard rock excavation. This fact is not only related to material and personnel costs arising from drill bit maintenance and replacement but also because of the direct and negative impact of a worn drill bit on the drilling performance. This paper presents typical machinery, tools and basic findings on wear and performance interactions as well as drilling tool wear mechanisms. Based on this theoretical background, methods and classifications for on‐site investigation of encountered tool wear rate and wear types are presented. The paper then summarises laboratory approaches for assessing of rock abrasiveness in order to predict drilling tool wear from geotechnical investigations.