Base Research on Solid Waste Pressure Transmission in Solid Waste Landfill

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  • Shimaoka Takayuki
    Department of Civil Engineering, Faculty of Engineering, Fukuoka University
  • Takezaki So
    Department of Civil Engineering, Faculty of Engineering, Fukuoka University
  • Ohyama Takeshi
    Department of Civil Engineering, Faculty of Engineering, Fukuoka University
  • Hanashima Masataka
    Department of Civil Engineering, Faculty of Engineering, Fukuoka University
  • Hirai Takao
    Research Laboratory, Mitsui Petrochemical Industrial Products Ltd.
  • Mizuta Kuninori
    Civil Engineering Materials Section, Mitsuboshi Sangyo Co., Ltd.

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Other Title
  • 埋立廃棄物のごみ圧に関する基礎的研究
  • ウメタテ ハイキブツ ノ ゴミアツ ニ カンスル キソテキ ケンキュウ

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Abstract

The forces within solid waste landfill must be understood in determining the stability of the foundation ground, structure and solid waste landfill at final waste disposal sites. In particular, pressure from solid waste that forms its structure is important in rattonaly designing that structure. In this research, experiments were conducted on the pressure from bottom ash, incombustible shredded solid waste and mixed solid waste, by using two test apparatuses for measuring earth pressure different forms of foundation. The purpose has to define the pressure transmission mechanism of solid waste landfill. It was found that the horizontal pressure was not proportional to the load pressure in certain types of waste, while vertical pressure from the solid waste showed differences in forms of distribution for each type of waste. Unlike earth pressure, the solid waste pressure fluctuated over time and did not show any distinct active state. The coefficient of stationaly solid waste pressure ranged between 0.38 and 0.46 for bottom ash, between 0.27 and 0.38 for incombustible shredded solid waste and between 0.34 and 0.62 for mixed solid waste. It was also found that these coefficients could not be estimated from the classification based on the grain size distribution of the solid waste. The effectiveness of Poisson's ratio concept in successfully explaining the pressure special characteristics of the transmission was demonstrated.

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