Science – Society – Technology
From: THM modeling of hydrothermal circulation at Rittershoffen geothermal site, France
Property (unit) | Upper sediments | Lower sediments | Upper granites | Lower granites |
---|---|---|---|---|
Porosity, \(\phi _o\) (\(\%\)) | 3.0\(^{[1]}\)–35.0\(^{[1]}\) | 2.9\(^{[10]}\)–20.7\(^{[11]}\) | 0.13\(^{[3]}\)–25.55\(^{[3]}\) | 0.13\(^{[3]}\)–0.8\(^{[1]}\) |
Total specific mass, \(r_0\) (kg m\(^{-3}\)) | 2300\(^{[1]}\)–2600\(^{[1]}\) | 2180\(^{[4]}\)–2660\(^{[7]}\) | 2500\(^{[1]}\)–2800\(^{[1]}\) | 2650\(^{[6]}\)–2800\(^{[6]}\) |
Young’s modulus, E (GPa) | 10.0\(^{[1]}\)–90.0\(^{[1]}\) | 8.0\(^{[1]}\)–39.0\(^{[5]}\) | 25.0\(^{[9]}\)–80.0\(^{[5]}\) | 25.0\(^{[9]}\)–80.0\(^{[5]}\) |
Poisson’s ratio, \(\nu\) (–) | 0.1\(^{[9]}\)–0.33\(^{[1]}\) | 0.06\(^{[1]}\)–0.46\(^{[1]}\) | 0.1\(^{[9]}\)–0.38\(^{[5]}\) | 0.1\(^{[9]}\)–0.38\(^{[5]}\) |
Biot coefficient, b (–) | 0.65\(^{[1]}\)–0.8\(^{[1]}\) | 0.8\(^{[1]}\)–1.0\(^{[1]}\) | 0.27\(^{[1]}\)–0.45\(^{[1]}\) | 0.27\(^{[1]}\)–0.45\(^{[1]}\) |
Specific heat, \(c_s\) (J kg\(^{-1}\) K\(^{-1}\)) | 800\(^{[1]}\) | 800\(^{[1]}\) | 800\(^{[1]}\) | 800\(^{[1]}\) |
Thermal conductivity, \(\lambda _{d}\) (W m\(^{-1}\) K\(^{-1}\)) | 1.1\(^{[3]}\)–5.9\(^{[3]}\) | 1.2\(^{[3]}\)–4.2\(^{[3]}\) | 2.3\(^{[3]}\)–4.3\(^{[3]}\) | 2.3\(^{[3]}\)–4.3\(^{[3]}\) |
Thermal dilation, \(\alpha _0\) (10\(^{-5}\) K\(^{-1}\)) | 1.3\(^{[8]}\)–1.5\(^{[8]}\) | 1.3\(^{[8]}\)–1.5\(^{[8]}\) | 1.4\(^{,[1]}\) | 1.4\(^{[1]}\) |
Heat source production, \(\theta _{\text{rad}}\) (\(\upmu\)W m\(^{-3}\)) | 0.1\(^{[2]}\)–1.0\(^{[3]}\) | 0.5\(^{[1]}\)–1.0\(^{[3]}\) | 1.0\(^{[6]}\)–6.2\(^{[5]}\) | 1.0\(^{[6]}\)–6.2\(^{[5]}\) |
Permeability, \(K_{\text{int}}\) (m\(^2\)) | \(1.0\times 10^{-18^{[4]}}\)–\(3.2\times 10^{-14^{[4]}}\) | \(1.0\times 10^{-18^{[11]}}\)–\(1.0\times 10^{-13^{[10]}}\) | \(1.0\times 10^{-20^{[12]}}\)–\(3.0\times 10^{-14^{[12]}}\) | \(1.0\times 10^{-20^{[12]}}\)–\(1.8\times 10^{-15^{[3]}}\) |