Long-term storage of spent fuel is critical to the nuclear energy industry. The Swedish Nuclear Fuel and Waste Management Company (SKB) is developing an approach for the storage of spent nuclear fuel in an underground repository in competent crystalline rock. In order to better understand the spalling damage process, an in-situ test involving the drilling of two boreholes was performed in Äspö diorite at SKB’s underground hard rock laboratory in Äspö. Tests and monitoring were performed on the pillar that separated the boreholes. In order to further investigate the damage process, Itasca performed numerical modeling using PFC3D and FLAC3D.
Dr. Zheng has been engaged in probabilistic site investigation methods of geotechnical engineering based on Bayesian Theory. She has been involved in postdoctoral research on soil parameters of deep muddy dam foundations based on in-situ tests in Power China HuaDong Engineering Corporation Limited and participated in Nyabarongo II HPP. The scope of her work covers ground investigation, in-situ testing of soil, probabilistic site investigation using the Bayesian method and stability analysis of surrounding rock of underground powerhouses.
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