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Investigation and modeling of 3D distribution of water chemistries in Horonobe, Hokkaido, Japan

地下水水質の3次元分布の推定に関するモデル化手法について

國丸 貴紀; 山本 肇*

Kunimaru, Takanori; Yamamoto, Hajime*

北海道幌延町で実施している幌延深地層研究計画では、地表からの調査として空中物理探査,地上物理探査,地質調査、及びボーリング調査などを行ってきた。それらの調査では、地質構造の把握や、水質の分析などを行っている。本報告では、地上からの調査段階において行った調査結果をもとに、地下水の水質形成や3次元分布に関する概念モデルを構築し、数値解析を行った結果をもとに、モデル化手法を構築した概要を示す。

The Japan Atomic Energy Agency (JAEA) has undertaken the underground research laboratory (Horonobe URL) project at Horonobe-cho, in northwest Hokkaido, Japan since fiscal year 2000. The project has now completed the first stage of surface based investigation, including environmental survey, airborne survey, geophysical survey, geological survey, and borehole drilling investigations, in the town. The conceptual model was carried out developing based on field investigations. The numerical simulations were performed based on conceptual model. This paper discusses to develop the conceptual and numerical hydrochemical models based on field investigations.

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