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| | Abstract | | In March 2011, Fukushima Daiichi Nuclear power Plant suffered major damage from 9.0 earthquake and subsequent tsunami. Disaster wastes contaminated by radioactive cesium were generated in large quantities by this disaster. A large amount of the wastes were burned in incineration plants. The incineration ashes contain a lot of radioactive cesium. Some ashes were dumped into controlled final landfill sites. Radioactive cesium is soluble in water. After dumping into the landfill, percolating water containing radioactive cesium may flow out from the landfill and pollute surrounding environment. Therefore it is important to understand the behavior of radioactive cesium in landfill. In order to understand that, it is necessary to clarify water permeability in landfills. Therefore, we tried to clarify water permeability in landfills by electrical resistivity method. We carried out two kinds of experiments. One is field survey, the other is a model experiment in the laboratory. By these experiments, we estimated about the movement of leachate in landfills. |
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