A new concept of karst development based on hydrogeology and geophysics

75 3. Hydrogeology of the Poitou Threshold At Civaux (Fig. 14), the parameter values are less dispersed 5. For the fracture network, hydraulic conductivity remains in the same order of magnitude (10–⁴ to 10–⁵ m/s), and specific storage ranges from 10–⁵ to 10–⁴ m–¹. The results for the matrix are also within a narrow range: matrix hydraulic conductivity varies between 10–⁹ and 2.10–⁸ m/s, and the specific storage of the matrix blocks ranges from 10–⁵ to 10–⁴ m–¹. 5. © EDF 2024: these data are the property of EDF; any use is subject to EDF’s prior agreement. Figure 13 HES parameters. Figure 14 Civaux parameters. © EDF 2024: these data are the property of EDF; any use is subject to EDF’s prior agreement.

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