Seismic impact to radioactive waste disposal facilities may include strong ground-motion impact, fault displacement and ground deformation impact, and impact by secondary hazards. Estimation of strong ground-motion for a site commonly uses deterministic or probabilistic approach via a seismic hazard analysis which has been mature in methodology. Because a disposal site locates commonly in an underground cavern, ground-motions or secondary hazards by tsunami, landslide, liquefaction etc. are not controlling the design of the disposal facilities, and fault displacement and ground deformation become the control. Fault displacement and ground deformation occur generally at primary fault and its surrounding areas and these may have avoided in selecting the disposal site. Therefore, secondary faulting becomes the issue concerned. In the region close to the primary fault, there may exist secondary faults or shear zones. These weak zones may also move during movement of the primary fault affecting the safety of disposal facilities. This study intends to collect relevant information extensively, and to review seismic impact assessment methods for radioactive waste disposal facilities. Details of fault displacement hazard analysis, including development of method and actual applications, will be conducted in the following projects.
|Effective start/end date
|1/01/18 → 31/12/18
UN Sustainable Development Goals
In 2015, UN member states agreed to 17 global Sustainable Development Goals (SDGs) to end poverty, protect the planet and ensure prosperity for all. This project contributes towards the following SDG(s):
- Radioactive waste disposal
- Seismic impact assessment
- Seismic hazard analysis
- Fault displacement hazard analysis
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