Abstract
Rock mass hydraulic conductivity is one of the most important indexes for candidate site quantitative assessment of high-level radioactive waste disposal. 178 hydrogeology tests, mainly constant head injection test and pulse test, were performed in the 4 boreholes drilled in Shazaoyuan candidate site. Reliable hydraulic conductivity was obtained with transient curve matching methods. The result shows that the hydraulic conductivity was high heterogeneous; the maximum hydraulic conductivity was 9.30×10-8m/s and 93% of the sections were lower than 10-8m/s. Shazaoyuan candidate site can be inferred as one of the most potential sites for the geological disposal of China’s HLW in the view of low permeability.
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