| 摘要 |
PROBLEM TO BE SOLVED: To provide an underground environment evaluating device capable of correctly evaluating shutting-up capacity of a nuclide possessed by an underground environment in a short time. SOLUTION: This underground environment evaluating device A1 is characterized by having a thin layer flow passage 4 formed along a surface of underground base rock 3, a first liquid supply part of supplying a first liquid including a tracer to the thin layer flow passage 4, a second liquid supply part of supplying a second liquid without including the tracer to the thin layer flow passage 4, and a concentration measuring means 7 measuring the concentration of the tracer in an outlet of the thin layer flow passage 4. COPYRIGHT: (C)2008,JPO&INPIT
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