Econ. Environ. Geol. 2009; 42(6): 609-618

Published online December 31, 2009

© THE KOREAN SOCIETY OF ECONOMIC AND ENVIRONMENTAL GEOLOGY

Thermo-hydraulic Modeling in Fault Zones

Youngmin Lee1, Jongchan Kim1,2*, Min-Ho Koo2 and Youngseuk Keehm2

1Korea Institute of Geoscience and Mineral Resources
2Kongju National University

Correspondence to :

Jongchan Kim

geotherm01@gmail.com

Received: November 20, 2009; Accepted: December 22, 2009

Abstract

High permeable faults are important geological structures for fluid flow, energy, and solute transport. Therefore, high permeable faults play an important role in the formation of hydrothermal fluid (or hot spring), high heat flow, and hydrothermal ore deposits. We conducted 2-D coupled thermal and hydraulic modeling to examine thermohydraulic behavior in fault zones with various permeabilities and geometric conditions. The results indicate discharge temperature in fault zones increases with increasing fault permeability. In addition, discharge temperature in fault zones is linearly correlated with Peclet number (R2=0.98). If Peclet number is greater than 1, discharge temperature in fault zones can be higher than 32oC. In this case, convection is dominant against conduction for the heat transfer in fault zones.

Keywords fault, permeability, heat, temperature

Article

Econ. Environ. Geol. 2009; 42(6): 609-618

Published online December 31, 2009

Copyright © THE KOREAN SOCIETY OF ECONOMIC AND ENVIRONMENTAL GEOLOGY.

Thermo-hydraulic Modeling in Fault Zones

Youngmin Lee1, Jongchan Kim1,2*, Min-Ho Koo2 and Youngseuk Keehm2

1Korea Institute of Geoscience and Mineral Resources
2Kongju National University

Correspondence to:

Jongchan Kim

geotherm01@gmail.com

Received: November 20, 2009; Accepted: December 22, 2009

Abstract

High permeable faults are important geological structures for fluid flow, energy, and solute transport. Therefore, high permeable faults play an important role in the formation of hydrothermal fluid (or hot spring), high heat flow, and hydrothermal ore deposits. We conducted 2-D coupled thermal and hydraulic modeling to examine thermohydraulic behavior in fault zones with various permeabilities and geometric conditions. The results indicate discharge temperature in fault zones increases with increasing fault permeability. In addition, discharge temperature in fault zones is linearly correlated with Peclet number (R2=0.98). If Peclet number is greater than 1, discharge temperature in fault zones can be higher than 32oC. In this case, convection is dominant against conduction for the heat transfer in fault zones.

Keywords fault, permeability, heat, temperature

    KSEEG
    Apr 30, 2024 Vol.57 No.2, pp. 107~280

    Stats or Metrics

    Share this article on

    • kakao talk
    • line

    Related articles in KSEEG

    Economic and Environmental Geology

    pISSN 1225-7281
    eISSN 2288-7962
    qr-code Download