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Bulletin of Engineering Geology and the Environment
Published in: Bulletin of Engineering Geology and the Environment 4/2020

16-12-2019 | Original Paper

Parametric study of integrity on the mechanical properties of transversely isotropic rock mass using DEM

Authors: Jiu-yang Huan, Ming-ming He, Zhi-qiang Zhang, Ning Li

Published in: Bulletin of Engineering Geology and the Environment | Issue 4/2020

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Abstract

The evaluation of the mechanical properties of a transversely isotropic rock mass is a challenging task in practical engineering. This paper aims to study the relationships between the integrity parameters and mechanical properties of a transversely isotropic rock mass. The rock mass quality designation (RQD) is an important index and reference for rock mass quality evaluation that was introduced to establish the numerical models of a jointed rock mass with different integrities. The numerical models of a transversely isotropic rock mass were established using the bonded particle model (BPM) and smooth joint model (SJM) embedded into the Particle Flow Code software (PFC2D). After calibrating the microscopic parameters of the intact rock and structural planes, a series of compression tests of a transversely isotropic rock mass was carried out to determine compressive strength and deformation modulus, and main factors were considered including the RQD, inclined angle of structural planes, structural plane thickness, structural plane properties, intact rock properties, and confining pressure. The experimental results showed that the mechanical parameters and failure modes of a transversely isotropic rock mass were controlled by the integrity parameters. By comparing the value of σcm/σc (ratio of the compressive strength of rock mass to rock mass) and Em/Er (ratio of the deformation modulus of rock mass to rock mass) with field test results, the results obtained from the discrete element method were demonstrated to be reasonable.
previous article Mechanical behavior of transversely isotropic rocks under uniaxial compression governed by micro-structure and micro-parameters
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Metadata
Title
Parametric study of integrity on the mechanical properties of transversely isotropic rock mass using DEM
Authors
Jiu-yang Huan
Ming-ming He
Zhi-qiang Zhang
Ning Li
Publication date
16-12-2019
Publisher
Springer Berlin Heidelberg
Published in
Bulletin of Engineering Geology and the Environment / Issue 4/2020
Print ISSN: 1435-9529
Electronic ISSN: 1435-9537
DOI
https://doi.org/10.1007/s10064-019-01679-9

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