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Reliability of rock parameters determination
Author(s) -
KUVIK Marian,
FRANKOVSKÁ Jana,
STOLÁRIK Ladislav
Publication year - 2018
Publication title -
ce/papers
Language(s) - English
Resource type - Journals
ISSN - 2509-7075
DOI - 10.1002/cepa.754
Subject(s) - dilatometer , rock mass classification , geotechnical engineering , geology , geological strength index , deformation (meteorology) , reliability (semiconductor) , rock mass rating , materials science , power (physics) , physics , quantum mechanics , oceanography , thermal expansion , metallurgy
Abstract This paper describes the field test methods used for rock parameters determination. The basic problem of engineering geotechnical investigation is – besides geological condition's description – determination of specific geotechnical parameters of rock and soil on the construction site. The deformation parameters of rock mass may be obtained by execution of in‐situ tests, indirect estimations based on rock classification methods and laboratory testing. The results of a geological investigation are often based only on laboratory testing, which consequently leads to inadequate characteristics of geotechnical parameters of the rock mass. Results of pressuremeter and dilatometer tests for crystalline rocks and their interpretation are presented in the paper. Deformation parameters determined by rock dilatometer testing for geotechnical design of the expressway R2 in Slovakia are analysed. In this paper, simple expressions are derived for estimating the deformation modulus using rock quality designation and degree of faulting.