The assessment of rock mass blockiness is fundamental for any geotechnical study, managing and validating geotechnical information is then critical for rock mass characterization purposes, especially when the borehole information is limited or the available cores are disturbed.
This work presents cases in Peruvian practice where managing and validation of logging database was successfully undertaken. The validation procedure included an evaluation of the blockiness and the use of a logging database from different projects to confirm/modify theoretical published bounds that correlate RQD and defect spacing, the work also included a comparative analysis of GSI estimation from data collected from cores, well-known approaches have been considered.
Moreover, blockiness data consistency as well as typical issues on logging activities and analysis are discussed. Special consideration has been given to weak zones and core loss. Typical issues and shortcomings when using/collecting borehole data for rock mass characterization are also highlighted.
