Experimental and analytical research on shear-flow coupling mechanism in rock joints. Heisei 13 progress report for the precedence-foundation engineering field. Document on collaborative study

JNC (Japan Nuclear Cycle Development Institute) has carried out research and development with Kyushu University titled ''Experimental and Analytical Research on Shear-Flow Coupling Mechanism in Rock Joints'' during 1999 to 2001 year. This report summarized a result in the final 2001 year in the above cooperate research. The following objectives were defined for this research. (1) Establishment of the aperture measurement methodology. (2) Development of the fracture hydrology and dynamics coupling evaluation technology. (3) Development of the fracture hydrology and dynamics coupling simulation modeling using GIS technology. Then we got following results. (1) We proposed the evaluation methodology of fracture aperture at the beginning of making a joint, and inspected the validity of this methodology. The geometrical property of fracture surface was evaluated quantitatively, and the variation of geometrical property with shearing could be estimated. (2) The share-flow coupling test apparatus was developed. We could find new information about the property of share-flow coupling data. (3) The share-flow coupling model was built up using GIS technology. (author)