TY - GEN

T1 - Induced Polarization of Saturated Ion-Conducting Rocks and Soils: Mechanistic Models

AU - Titov, K.

AU - Gurin, G.

AU - Mehalli, B.

AU - Tarasov, A.

N1 - Publisher Copyright: © Conference and Exhibition Eng. and Mining Geophysics 2021. All rights reserved.

PY - 2021/4/26

Y1 - 2021/4/26

N2 - In this paper, we review phenomenological and physical-chemical theories of Induced Polarization (IP) of saturated ion-conducting rocks and soils. The IP phenomenology is based on a behavior of equivalent electrical scheme including parallel connection of two elements: (1) a resistance, and (2) a serial connection of another resistance and capacitance. This scheme can be described based on a very popular Pelton [1978] model. Then we review two classes of physical-chemical theories, describing the granular and the capillary models of rock/soil. Both are based on the theory of Electrical Double Layer (EDL) occurring at the interface between the solid and liquid phases. In the granular model IP is mostly produced by the polarization of the inner part of EDL (the Stern layer), and in the capillary model – by the membrane polarization, which, in turn, is closely related to polarization of the outer part of EDL (the diffuse layer). In conclusion, we address two methodological principles of IP modelling: (1) experimental determination of a dominant IP physical mechanism typical of each rock/soil type, and (2) theoretical modelling of such a mechanism using minimally needed measurable parameters.

AB - In this paper, we review phenomenological and physical-chemical theories of Induced Polarization (IP) of saturated ion-conducting rocks and soils. The IP phenomenology is based on a behavior of equivalent electrical scheme including parallel connection of two elements: (1) a resistance, and (2) a serial connection of another resistance and capacitance. This scheme can be described based on a very popular Pelton [1978] model. Then we review two classes of physical-chemical theories, describing the granular and the capillary models of rock/soil. Both are based on the theory of Electrical Double Layer (EDL) occurring at the interface between the solid and liquid phases. In the granular model IP is mostly produced by the polarization of the inner part of EDL (the Stern layer), and in the capillary model – by the membrane polarization, which, in turn, is closely related to polarization of the outer part of EDL (the diffuse layer). In conclusion, we address two methodological principles of IP modelling: (1) experimental determination of a dominant IP physical mechanism typical of each rock/soil type, and (2) theoretical modelling of such a mechanism using minimally needed measurable parameters.

UR - http://www.scopus.com/inward/record.url?scp=85114242128&partnerID=8YFLogxK

U2 - 10.3997/2214-4609.202152079

DO - 10.3997/2214-4609.202152079

M3 - статья в сборнике материалов конференции

SN - 9789462823723

VL - 2021

T3 - 17th Conference and Exhibition Engineering and Mining Geophysics 2021

SP - 1

EP - 9

BT - 17th Conference and Exhibition Engineering and Mining Geophysics 2021

PB - European Association of Geoscientists and Engineers

T2 - Инженерная и рудная геофизика 2021

Y2 - 26 April 2021 through 30 April 2021

ER -