Permeability and tracer test with using laboratory hydrology testing system on mass transport in fractured rock. Results until 2001 years

We have carried out the permeability tests and tracer tests using LABROCK (LABoratory test on mass transport in fractured ROCK) which was developed in order to get basic information relevant to the HLW geological disposal program. We have been focusing on the parallel single fracture and natural single fracture. Much knowledge about permeability and tracer transport was acquired as a result of examinations. This report summarize these knowledge. In future, we will measure the aperture of natural single fracture. If we will be able to develop the model of natural fracture based on measured aperture distribution and to explain permeability and tracer transport character described in this report, this research will play an important role in the HLW geological disposal program. (author)