Abstracts for Annual Meeting of Japan Association of Mineralogical Sciences
2015 Annual Meeting of Japan Association of Mineralogical Sciences
Session ID : S2-02
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S2: Water Rock Interaction (Joint session with SRG)
Occurrence of rock fracture under the rapid decompression boiling condition of water
*Nobuo HIRANOSatoshi AOSHIMAAtsushi OKAMOTONoriyoshi TSUCHIYA
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CONFERENCE PROCEEDINGS FREE ACCESS

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Abstract

 In our previous experimental results, ”Hydrothermally Derived Fracture (HDF)” were progressed under the high temperature and low-pressure condition. The result of detailed observation, it was thought that the thermal stress occurred with rapid cooling of rock/mineral sample surface by low temperature condensed vapor dew contact. similarly, rapid decompression in the high-temperature/pressure state causes the rapid temperature decline by latent/sensible heat effect. And when such situation has happened around the rock/mineral samples, HDF may occur under the hydrothermal condition. When this decompression fracturing mechanism is elucidated, it may be useful for Enhanced Geothermal System or understanding of mineral vain formation.

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© 2015 Japan Association of Mineralogical Sciences
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