Interpretation of field tests using geo-statistics and Kriging to assess the deep vibratory compaction of the Dike A21, Diavik Diamond Mine

Abstract This article presents an interpretation and statistical analysis of heavy dynamic probing (DPH) tests carried out on the compacted core Dike A21, Diavik Diamond Mine. Due to inhomogeneous inherently random nature soil uncertainties associated with even well controlled field such as DPH tests, evaluation in situ properties (such density) should take into consideration natural variability soil. Aided by large amount relatively concentrated data, this paper a methodology for not only evaluating statistically through Kriging, but also judging compaction effort, taking variability. documents necessary normalization procedure, analyzing number external factors temperature, time since (aging) presence nearby works that may affect data. It was shown appraisal improvement measures consider unavoidable fluctuations fill material. The Kriging estimate combined averaging procedure subsequent comparison expected variability, quantified variogram, applied which enabled assessment areas insufficient compaction. Additionally, influence aging demonstrated, where clear increase between 0 14 days observed. found over-compaction leads typically lower relative density. authors note performed following control acceptance dike had no impact construction.