Thermo-hydrogeomechanical modeling of vertical ground deformation during the operation of the Mutnovskii Geothermal Field
| Autor: | Jonny Rutqvist, O. L. Basmanov, M. A. Magus’kin, A. V. Kiryukhin, V. N. Dvigalo |
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| Jazyk: | angličtina |
| Rok vydání: | 2016 |
| Předmět: |
Geochemistry & Geophysics
geography geography.geographical_feature_category 010504 meteorology & atmospheric sciences Field (physics) Petrophysics Metals and Alloys Borehole Subsidence Deformation (meteorology) Fault (geology) 010502 geochemistry & geophysics Geotechnical Engineering and Engineering Geology 01 natural sciences Tectonics Geophysics Geothermal gradient Seismology Geology 0105 earth and related environmental sciences |
| Zdroj: | Basmanov, OL; Kiryukhin, AV; Maguskin, MA; Dvigalo, VN; & Rutqvist, J. (2016). Thermo-hydrogeomechanical modeling of vertical ground deformation during the operation of the Mutnovskii Geothermal Field. Journal of Volcanology and Seismology, 10(2), 138-149. doi: 10.1134/S0742046316020032. Lawrence Berkeley National Laboratory: Retrieved from: http://www.escholarship.org/uc/item/6kt3v7n6 Journal of Volcanology and Seismology, vol 10, iss 2 |
| DOI: | 10.1134/S0742046316020032. |
| Popis: | © 2016, Pleiades Publishing, Ltd. Vertical ground displacements at the Mutnovskii Geothermal Field were measured annually during the 2004–2013 period using a network of borehole markers. Three areas have been identified where the vertical displacements were different in character. Positive vertical deformation (2–5 mm/yr) was recorded in the middle of the Dachnyi Area in 2005–2006, giving way to a later stabilization. The North Test Area where the exhaust heat carrier was reinjected did not show any substantial deformation during the 2003–2006 period. This was followed by an uplift in 2006–2008 (6–7 mm/yr) and then by a subsidence (5–8 mm/yr) in 2009–2013. No vertical deformation worth mentioning was recorded in the Verkhne-Mutnovskii Area prior to 2008, but a rapid subsidence began at a rate of 6–18 mm/yr after 2008. We used the TOUGH-FLAC software to analyze vertical ground deformation. This program is used to perform thermo-hydrogeomechanical (THM) modeling based on the previous TOUGH2 model. THM modeling can explain relative vertical deformation during the exploitation of the Mutnovskii Geothermal Field by separating the geothermal field into two compartments by the Osnovnoi fault, as the two have different tectonic settings and petrophysical properties. |
| Databáze: | OpenAIRE |
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