Study on Moisture Movement in Solid Waste Landfill with Cover Soil Layers

DOI Web Site 4 References
  • Shimaoka Takayuki
    Department of Urban and Environmental Engineering, Faculty of Engineering, Kyushu University
  • Komiya Teppei
    Research Institute of Environment for Sustainability, Faculty of Engineering, Kyushu University
  • Komiya Naoko
    Department of Urban and Environmental Engineering, Graduate School of Engineering, Kyushu University
  • Miyawaki Kentaro
    Department of Environmental Systems, School of Science and Engineering, Meisei University
  • Hanashima Masataka
    Research Center for Recycling Systems, Planning & Information Department of Fukuoka

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Other Title
  • 覆土膜構造を有する廃棄物埋立地の水分移動に関する研究
  • フクド マク コウゾウ オ ユウスル ハイキブツ ウメタテチ ノ スイブン イドウ ニ カンスル ケンキュウ

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In order to clarify the effect of daily cover soil on moisture movement in a solid waste landfill, water permeation experiments were carried out using large two-dimensional lysimeters in which inclined cover soil layers were constructed, and the effects were examined by unsaturated water flow analysis.<BR>It was proven that the moisture movement was uneven horizontally because of the existence of inclined cover soil layers, and rainwater permeation through these layers to the landfill waste was impeded. It was demonstrated that the unevenness of horizontal permeation decreased as the slope of a cover soil layer became gentler. This suggests that uneven permeation could be mitigated by the proper positioning of inclined soil layers in the landfill waste layers.

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