Rheological-dynamical method for prediction of compressive strength and deformation of rocks

In this paper, a novel rheological-dynamical method for predicting uniaxial compressive strength and rock deformation is presented. The method uses a rheological-dynamical analogy (RDA) to determine the ascending branch of pre-peak states of rock sample, taking into account only the measured P and S...

Full description

Saved in:
Bibliographic Details
Published in:International journal of rock mechanics and mining sciences (Oxford, England : 1997) England : 1997), 2021-05, Vol.141, p.104659, Article 104659
Main Author: Milašinović, Dragan D.
Format: Article
Language:English
Subjects:
Compressive strength
Creep (materials)
Damage
Damage variable
Deformation
Internal friction
Mohr-Coulomb material
Mohr-Coulomb theory
RDA
Rheological properties
Rheology
Rocks
S waves
Sandstone
Strain
Strain-softening
UCS
Ultrasonic measurements
Wave velocity
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:In this paper, a novel rheological-dynamical method for predicting uniaxial compressive strength and rock deformation is presented. The method uses a rheological-dynamical analogy (RDA) to determine the ascending branch of pre-peak states of rock sample, taking into account only the measured P and S wave velocities and rock density. Post-peak state is defined as strain-softening by damage mechanics, with the scalar damage variable defined by a creep coefficient. Own experimental results and those taken from the literature are used in support of the presented method. The method is very suitable if the rock is viewed as a Mohr-Coulomb material with an experimentally-determined angle of internal friction and cohesion. The efficiency and accuracy of the method is confirmed based on samples of sandstone, granite and carbonate.
ISSN:1365-1609
1873-4545
DOI:10.1016/j.ijrmms.2021.104659