| The purpose of this study is to examine the effectiveness of high-density oxygen gas for tracing groundwater flow.To grasp groundwater flow accurately is important for efficient landslide groundwater drainage works. Generally, it has been employed tracer such as salt, chemicals, dyes, but these tracers are considered to make bad influences to the groundwater occasionally. Therefore, we developed a new method for groundwater tracing, using high-density oxygen as a tracer instead of others. As the result of this new method we had examined in several landslide sites in Japan, and obtain effectiveness of this method. |
