Details
| Original language | English |
|---|---|
| Title of host publication | 13th ISRM International Congress of Rock Mechanics |
| Editors | Hassani, Hadjigeorgiou, Archibald |
| ISBN (electronic) | 9781926872254 |
| Publication status | Published - 2015 |
| Event | 13th ISRM International Congress of Rock Mechanics 2015 - Montreal, Canada Duration: 10 May 2015 → 13 May 2015 |
Publication series
| Name | 13th ISRM International Congress of Rock Mechanics |
|---|---|
| Volume | 2015- MAY |
Abstract
The demand for gas storage operations with high withdrawal rates and operation modes different to a seasonal storage regime requires a more detailed rock mechanical consideration of thermal induced stresses in the vicinity of the caverns. This means that the change of gas temperatures during operation and the consequences of these temperature changes on the stressing of the salt rock mass must be taken into account in the rock mechanical dimensioning. Within the rock mechanical calculations a loading history, i.e. a pressure versus time dependency, has to be defined. As rock salt has a time dependent material behavior stress redistributions in the rock salt mass take place even under constant internal pressure conditions. Therefore not only withdrawal and filling periods but also the duration of phases with nearly constant internal pressure is significant for the resulting state variables. Within the paper the differences and consequences for the rock mechanical recommendations are discussed. As a result it can be concluded that recommendations with respect to minimum operation pressure as well as for maximum withdrawal rates can be answered only in connection with the respective time intervals.
Keywords
- Creep of rock salt, Gas cavern design, Rock mechanics, Thermodynamics
ASJC Scopus subject areas
- Earth and Planetary Sciences(all)
- Geophysics
- Earth and Planetary Sciences(all)
- Geochemistry and Petrology
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13th ISRM International Congress of Rock Mechanics. ed. / Hassani; Hadjigeorgiou; Archibald. 2015. (13th ISRM International Congress of Rock Mechanics; Vol. 2015- MAY).
Research output: Chapter in book/report/conference proceeding › Conference contribution › Research › peer review
}
TY - GEN
T1 - Rock mechanical design of gas storage caverns in rock salt mass with cyclic operations
AU - Staudtmeister, K.
AU - Zapf, D.
PY - 2015
Y1 - 2015
N2 - The demand for gas storage operations with high withdrawal rates and operation modes different to a seasonal storage regime requires a more detailed rock mechanical consideration of thermal induced stresses in the vicinity of the caverns. This means that the change of gas temperatures during operation and the consequences of these temperature changes on the stressing of the salt rock mass must be taken into account in the rock mechanical dimensioning. Within the rock mechanical calculations a loading history, i.e. a pressure versus time dependency, has to be defined. As rock salt has a time dependent material behavior stress redistributions in the rock salt mass take place even under constant internal pressure conditions. Therefore not only withdrawal and filling periods but also the duration of phases with nearly constant internal pressure is significant for the resulting state variables. Within the paper the differences and consequences for the rock mechanical recommendations are discussed. As a result it can be concluded that recommendations with respect to minimum operation pressure as well as for maximum withdrawal rates can be answered only in connection with the respective time intervals.
AB - The demand for gas storage operations with high withdrawal rates and operation modes different to a seasonal storage regime requires a more detailed rock mechanical consideration of thermal induced stresses in the vicinity of the caverns. This means that the change of gas temperatures during operation and the consequences of these temperature changes on the stressing of the salt rock mass must be taken into account in the rock mechanical dimensioning. Within the rock mechanical calculations a loading history, i.e. a pressure versus time dependency, has to be defined. As rock salt has a time dependent material behavior stress redistributions in the rock salt mass take place even under constant internal pressure conditions. Therefore not only withdrawal and filling periods but also the duration of phases with nearly constant internal pressure is significant for the resulting state variables. Within the paper the differences and consequences for the rock mechanical recommendations are discussed. As a result it can be concluded that recommendations with respect to minimum operation pressure as well as for maximum withdrawal rates can be answered only in connection with the respective time intervals.
KW - Creep of rock salt
KW - Gas cavern design
KW - Rock mechanics
KW - Thermodynamics
UR - http://www.scopus.com/inward/record.url?scp=85044178562&partnerID=8YFLogxK
M3 - Conference contribution
AN - SCOPUS:85044178562
T3 - 13th ISRM International Congress of Rock Mechanics
BT - 13th ISRM International Congress of Rock Mechanics
A2 - Hassani, null
A2 - Hadjigeorgiou, null
A2 - Archibald, null
T2 - 13th ISRM International Congress of Rock Mechanics 2015
Y2 - 10 May 2015 through 13 May 2015
ER -