Geotechnical core logging, of diamond drill core is one of the most widely used methods to investigate and characterise rock masses. Core logging results feed in to among other things engineering geological interpretations, ground models, rock mass quality forecasts and hydrogeological assessments. If the geotechnical characteristics of the rock are not captured with precision and accuracy during core logging, then the subsequent usage of the data can produce misleading results that can negatively impact rock engineering projects.
This study started with a hypothesis that there is a lack of modern published standards and guidelines for geotechnical core logging, and that applied methodology varies significantly throughout the industry.
Results from the study show that a lack of published standards and guidelines has led to a large variation in applied practice for geotechnical core logging. The authors highlight the many areas in which practice can be improved and the need for the industry to develop a standard or guideline dedicated to geotechnical core logging. It is hoped that the recommendations provided in this document can help form the basis for such a standard, but even in their current form the recommendations can be used to help practitioners to improve the quality of their geotechnical core logging.
The study was funded by BeFo and ITASCA. The engagement from a reference group consisting of 9 participants from the rock engineering industry is acknowledged.
