Long-Term Settlement Behavior of Refuse Landfills with Different Fill Ages

매립 연한이 서로 다른 쓰레기 매립지의 장기 침하 거동

  • Park, Hyeon-Il (Dept. of Civil Engineering, Korea Advanced Institute of Science and Technology) ;
  • Lee, Seung-Rae (Dept. of Civil Engineering, Korea Advanced Institute of Science and Technology) ;
  • Go, Gwang-Hun
  • Published : 1998.04.01

Abstract

The settlement characteristics of refuse landfills are peculiar because considerable amount of settlement occurs due to the decomposition of refuse organic solids for very long period. The total amount of compression that occurs due to the decomposition in refuse landfill is mainly dependent on the amount of biodegradable refuse solids and fill Ige of the refuse landfill, and the settlement stabilization speed is dependent on the decomposition condition. In order to figure out the settlement characteristics of refuse landfills. a proposed mathematical model is applied to settlement data of refuse landfills with different fill ages. A data bank of model parameters was obtained and the trends were analyzed. The long-term settlement behavior of refuse landfills can be estimated fairly well by the proposed model. The total remaining amount of settlement may be predicted on the basis of the fill age and appropriate two design parameters.

쓰레기 매립지는 쓰레기 고형물이 장기간에 걸쳐 생물학적으로 분해됨으로 말미암아 상당한 양의 침하가 유발되는 독특한 침하특성을 갖고 있다. 분해에 의한 총 압축량은 분해가능한 쓰레기의 고형물 함량 및 매립연한에 크게 의존하며. 매립지 침하의 안정화 속도는 분해조건에 의존한다. 쓰레기 매립지의 이러한 독특한 침하거동을 규명하기 위하여 제안되었던 침하모델을 매립 연한이 서로 다른 쓰레기 매립지 침하자료들에 대하여 적용하였다. 모델 변수 값들이 각각 구해 졌으며, 그 경향들이 분석되었다. 쓰레기 매립지의 장기 침하 양상이 제안된 모델에 의해 잘 예측될 수 있으며, 매립연한 및 두개의 적합한 설계변수에 근거하여 잔존 침하량을 예측할 수 있다.

Keywords

References

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