Abstract
A three-dimensional (3-D) discrete fracture network (DFN) geo-descriptive model is developed for water conducting features (WCFs) in the sedimentary formations of Horonobe underground research laboratory (URL) in Japan. Fracturing and faulting system in/around the URL area, which is the main investigation area of the Horonobe URL project, is characterized by taking into account borehole geophysical logging data, regional geologic/structural data, and fracture/fault data (orientation, intensity, size) obtained from the surface-based investigations. Volumetric fracture intensity potential is estimated by the correlation and the multi-linear regression analysis of observed data, and is used as one of controls for 3-D DFN model. A regional scale 3-D geo-descriptive DFN model is constructed based on the analyzed fracturing system identified for the WCFs. The current 3-D geo-descriptive model could be utilized explicitly to derive performance assessment (PA) parameters for the hypothetical repository of the high-level radioactive wastes in Japan, and to assist optimization of the safe repository design.
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Hatanaka, K., Lim, DH. & Ishii, E. Geo-Descriptive Modeling of Water Conducting Features Characterized in Sedimentary Formations in Horonobe Area of Japan. MRS Online Proceedings Library 1265, 604 (2010). https://doi.org/10.1557/PROC-1265-AA06-04
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DOI: https://doi.org/10.1557/PROC-1265-AA06-04