Control test of radioactive transport on the cut slope at the edge of hill forest after the Fukushima Daiichi nuclear disaster

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  • 福島第一原発事故後の丘陵地林縁部法面における放射性物質移動防止試験
  • フクシマ ダイイチ ゲンパツ ジコ ゴ ノ キュウリョウチリンエンブ ノリメン ニ オケル ホウシャセイ ブッシツ イドウ ボウシ シケン

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Abstract

Control test of radioactive transport was done from June to November in 2012 on the cut slope at the edge of deciduous broadleaf hill forest in Yamakiya District of Kawamata Town, Fukushima Prefecture. After removing vegetation and litter, 6 decontamination and erosion control treatment plots were set. Though radioactive substance as decreased in the treatment plots at first, it became stopped later due to the development of vegetation. The downward movement of 1.5-8.6 kBq/m2 of radiocesium was observed in the test plots during 4 and half months. Almost radioactive substance moved downwards as the form of sediment and litter. It was effectively controlled by the combination of fence and permeable mat.

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