Effects of Excavation Damage on the Electrical Properties of Rock Mass

Pekka Kantia; Risto Kiuru; Mikael Rinne

Effects of Excavation Damage on the Electrical Properties of Rock Mass

Department of Civil Engineering

Geofcon

Research output: Chapter in Book/Report/Conference proceeding › Conference article in proceedings › Scientific › peer-review

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Abstract

Electrical and Electromagnetic (EM) methods have been used for characterization of Excavation Damage Zone (EDZ) in conjunction with long-term safety evaluation of geological disposal of spent nuclear fuel. Physical properties of the rock have been tested in laboratory to characterise the property changes related to EDZ. EM research has focused around Ground Penetrating Radar (GPR) utilizing GPR EDZ method, developed for excavation quality control in means of EDZ extend. For 20 specimens, resistivity, relative dielectric permittivity (ε r ) as well as high frequency scattering parameters (electrical conductivity and ε r ) were measured. Induced Polarization (IP) values were calculated from resistivity data. Resistivity, IP and ε r , was produced to support the use of GPR image analysis and the GPR EDZ method. Results were analysed to reveal links between εr and conductivity, and to analyse possible depth dependencies. A positive association between electrical conductivity and ε r was observed. Changes in the electrical properties linked to shallow depths and visual EDZ features were observed, which seems to validate the theoretical basis of the GPR EDZ method. Electrical property data allows further modelling, development and assessment of the GPR EDZ method.

Original language	English
Title of host publication	EUROCK 2018: Geomechanics and Geodynamics of Rock Masses
Subtitle of host publication	Proceedings of the 2018 European Rock Mechanics Symposium (Eurock 2018), Saint Petersburg, Russia, 22-26 May 2018
Editors	Vladimir Litvinenko
Publisher	CRC Press
Pages	647-652
Number of pages	6
Volume	1
ISBN (Electronic)	978-0-429-46177-4
ISBN (Print)	978-1-138-61645-5, 978-1-138-61735-3
Publication status	Published - 22 May 2018
MoE publication type	A4 Conference publication
Event	ISRM European Rock Mechanics Symposium - Saint Petersburg, Russian Federation Duration: 22 May 2018 → 26 May 2018

Conference

Conference	ISRM European Rock Mechanics Symposium
Abbreviated title	EUROCK
Country/Territory	Russian Federation
City	Saint Petersburg
Period	22/05/2018 → 26/05/2018

Keywords

Electrical conductivity
Electrical resistivity
Excavation damage
Induced polarisation
Network analyser
Relative dielectric permittivity
Scattering parameters

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ENG_Kantia_et_al_Effects_of_excavation_damage_EUROCK_2018Accepted author manuscript, 466 KB

Cite this

@inproceedings{83e3d4dc68bf4b57875ae6ee874d871d,

title = "Effects of Excavation Damage on the Electrical Properties of Rock Mass",

abstract = "Electrical and Electromagnetic (EM) methods have been used for characterization of Excavation Damage Zone (EDZ) in conjunction with long-term safety evaluation of geological disposal of spent nuclear fuel. Physical properties of the rock have been tested in laboratory to characterise the property changes related to EDZ. EM research has focused around Ground Penetrating Radar (GPR) utilizing GPR EDZ method, developed for excavation quality control in means of EDZ extend. For 20 specimens, resistivity, relative dielectric permittivity (ε r ) as well as high frequency scattering parameters (electrical conductivity and ε r ) were measured. Induced Polarization (IP) values were calculated from resistivity data. Resistivity, IP and ε r , was produced to support the use of GPR image analysis and the GPR EDZ method. Results were analysed to reveal links between εr and conductivity, and to analyse possible depth dependencies. A positive association between electrical conductivity and ε r was observed. Changes in the electrical properties linked to shallow depths and visual EDZ features were observed, which seems to validate the theoretical basis of the GPR EDZ method. Electrical property data allows further modelling, development and assessment of the GPR EDZ method. ",

keywords = "Electrical conductivity, Electrical resistivity, Excavation damage, Induced polarisation, Network analyser, Relative dielectric permittivity, Scattering parameters",

author = "Pekka Kantia and Risto Kiuru and Mikael Rinne",

year = "2018",

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day = "22",

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publisher = "CRC Press",

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note = "ISRM European Rock Mechanics Symposium, EUROCK ; Conference date: 22-05-2018 Through 26-05-2018",

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Kantia, P, Kiuru, R & Rinne, M 2018, Effects of Excavation Damage on the Electrical Properties of Rock Mass. in V Litvinenko (ed.), EUROCK 2018: Geomechanics and Geodynamics of Rock Masses : Proceedings of the 2018 European Rock Mechanics Symposium (Eurock 2018), Saint Petersburg, Russia, 22-26 May 2018. vol. 1, CRC Press, pp. 647-652, ISRM European Rock Mechanics Symposium, Saint Petersburg, Russian Federation, 22/05/2018.

Effects of Excavation Damage on the Electrical Properties of Rock Mass. / Kantia, Pekka; Kiuru, Risto ; Rinne, Mikael.
EUROCK 2018: Geomechanics and Geodynamics of Rock Masses : Proceedings of the 2018 European Rock Mechanics Symposium (Eurock 2018), Saint Petersburg, Russia, 22-26 May 2018. ed. / Vladimir Litvinenko. Vol. 1 CRC Press, 2018. p. 647-652.

Research output: Chapter in Book/Report/Conference proceeding › Conference article in proceedings › Scientific › peer-review

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T1 - Effects of Excavation Damage on the Electrical Properties of Rock Mass

AU - Kantia, Pekka

AU - Kiuru, Risto

AU - Rinne, Mikael

PY - 2018/5/22

Y1 - 2018/5/22

N2 - Electrical and Electromagnetic (EM) methods have been used for characterization of Excavation Damage Zone (EDZ) in conjunction with long-term safety evaluation of geological disposal of spent nuclear fuel. Physical properties of the rock have been tested in laboratory to characterise the property changes related to EDZ. EM research has focused around Ground Penetrating Radar (GPR) utilizing GPR EDZ method, developed for excavation quality control in means of EDZ extend. For 20 specimens, resistivity, relative dielectric permittivity (ε r ) as well as high frequency scattering parameters (electrical conductivity and ε r ) were measured. Induced Polarization (IP) values were calculated from resistivity data. Resistivity, IP and ε r , was produced to support the use of GPR image analysis and the GPR EDZ method. Results were analysed to reveal links between εr and conductivity, and to analyse possible depth dependencies. A positive association between electrical conductivity and ε r was observed. Changes in the electrical properties linked to shallow depths and visual EDZ features were observed, which seems to validate the theoretical basis of the GPR EDZ method. Electrical property data allows further modelling, development and assessment of the GPR EDZ method.

AB - Electrical and Electromagnetic (EM) methods have been used for characterization of Excavation Damage Zone (EDZ) in conjunction with long-term safety evaluation of geological disposal of spent nuclear fuel. Physical properties of the rock have been tested in laboratory to characterise the property changes related to EDZ. EM research has focused around Ground Penetrating Radar (GPR) utilizing GPR EDZ method, developed for excavation quality control in means of EDZ extend. For 20 specimens, resistivity, relative dielectric permittivity (ε r ) as well as high frequency scattering parameters (electrical conductivity and ε r ) were measured. Induced Polarization (IP) values were calculated from resistivity data. Resistivity, IP and ε r , was produced to support the use of GPR image analysis and the GPR EDZ method. Results were analysed to reveal links between εr and conductivity, and to analyse possible depth dependencies. A positive association between electrical conductivity and ε r was observed. Changes in the electrical properties linked to shallow depths and visual EDZ features were observed, which seems to validate the theoretical basis of the GPR EDZ method. Electrical property data allows further modelling, development and assessment of the GPR EDZ method.

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KW - Electrical resistivity

KW - Excavation damage

KW - Induced polarisation

KW - Network analyser

KW - Relative dielectric permittivity

KW - Scattering parameters

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SN - 978-1-138-61735-3

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BT - EUROCK 2018: Geomechanics and Geodynamics of Rock Masses

A2 - Litvinenko, Vladimir

PB - CRC Press

T2 - ISRM European Rock Mechanics Symposium

Y2 - 22 May 2018 through 26 May 2018

ER -

Effects of Excavation Damage on the Electrical Properties of Rock Mass

Abstract

Conference

Keywords

Access to Document

Other files and links

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ORMID: On-line Risk Management in Deep Mines

Cite this

Effects of Excavation Damage on the Electrical Properties of Rock Mass

Abstract

Conference

Keywords

Access to Document

Other files and links

Fingerprint

Projects

ORMID: On-line Risk Management in Deep Mines

Cite this