TY  - JOUR
ID  - epos2139
UR  - http://doi.org/10.1016/j.ijrmms.2018.01.008
A1  - Blanco-Martín, Laura
A1  - Rouabhi, Ahmed
A1  - Billiotte, Joël
A1  - Hadj-Hassen, Faouzi
A1  - Tessier, Bruno
A1  - Hévin, Grégoire
A1  - Balland, Cyrille
A1  - Hertz, Emmanuel
Y1  - 2018///
N2  - High frequency cycling of salt caverns is becoming common practice to meet the needs of energy markets and to foster underground energy storage. In the case of rapid cooling, tensile stresses and thermally-induced fractures can appear in the surrounding rock, with potential detrimental consequences to the integrity of the storage project. To further investigate the effects of rapid cycles on the integrity of rock salt, a thermo-mechanical test was performed in a salt mine. It consisted in cooling rapidly several times a salt surface of 10 m2 (=?20 °C in about 8 h). Extensive monitoring allowed tracking the thermo-mechanical response of the rock, including possible fracture creation and propagation. Although more research is needed, the test demonstrated that tensile fracturing due to rapid cooling is possible. Thermo-mechanical modeling allowed reproducing fairly well the location, orientation and timing of the first fracture; indeed, fractures should be avoided to ensure cavern integrity, and therefore knowledge about the critical zones where fractures could appear is sufficient at the design stage.
PB  - Elsevier Science
JF  - International Journal of Rock Mechanics and Mining Sciences
VL  - 102
KW  - Field test
KW  -  Temperature drop
KW  -  Tensile stresses
KW  -  Salt caverns
KW  -  High frequency cycling
KW  -  Thermo-mechanical modeling
SN  - 1365-1609
TI  - Experimental and numerical investigation into rapid cooling of rock salt related to high frequency cycling of storage caverns
SP  - 120
AV  - none
EP  - 130
ER  -