Groundwater flow analysis based on hydrogeological model including active fault

Noda, Masaru*; Ando, Kenichi*; Tanaka, Tatsuya*

The Objectives of this study is to develop the modeling strategy for high permeable fracture zone around active fault and influence of tectonically movement. Hydrogeological model of Atotsugawa-fault and Tsukiyoshi fault is developed for groundwater flow analysis. Last year, literature survey for hydrogeological modeling and groundwater flow analysis was performed, and hydrogeological model of Mozumisukenobu-fault was initiated based on JNC research. This year, the strategy for hydrogeological model of Mozumisukenobu-fault, Tsukiyoshi fault and active fault of Tottori-ken Seibu Earthquake is developed. The quality and quantity of hydrogeological information are different among the above three areas, therefore well developed strategy for the adequate modeling and analyzing is required. Finally local scale model of Mozumisukenobu-fault (2kmx2kmx500m) and Tsukyoshi-fault(4kmx6km3km), and regional scale model of active fault of Tottori-ken Seibu Earthquake(30kmx30kmx5km) are created and analyzed as an initial model.