In our past fracturing experiments using the granite and artificial quartz, fracturing was accelerated under the specific hydrothermal conditions. We have already reported fracturing phenomena accelerated by hydrothermal solution as hydrothermally derived fracturing (HDF). These phenomena occurred under the hydrothermal conditions subcritical and including supercritical condition such as 600°C, 60MPa. And, the result of artificial quartz fracturing experiment suggested that fracturing of granite was initiated by quartz fracturing. Therefore, We investigated the fracturing of quartz grain in natural granite rock samples under same conditions as past experiments. As a result, it is confirmed that the natural quartz fracturing in natural granite was accelerated at 400°C, 0.1 MPa - 1 MPa drastically. This microfracture making was may be useful for the application of shallow geothermal development near the volcano.
|Number of pages
|Transactions - Geothermal Resources Council
|Published - 2003
|International Collaboration for Geothermal Energy in the Americas - Geothermal Resources Counsil: 2003 Annual Meeting - Morelia, Michoacan, Mexico
Duration: 2003 Oct 12 → 2003 Oct 15
- Geothermal fluid supercritical water
- Hydrothermally derived fracture