Journal of the Korean GEO-environmental Society (한국지반환경공학회 논문집)

Korean Geo-Environmental Society (한국지반환경공학회)
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Long-term Settlement Prediction of Center-cored Rockfill Dam using Measured Data

계측자료를 이용한 중심코어형 석괴댐의 장기침하량 예측

  • Lee, Chungwon (Institute for Advanced Construction Materials, Kangwon National University) ;
  • Kim, Yongseong (Department of Regional Infrastructure Engineering, Kangwon National University)
  • Received : 2014.07.18
  • Accepted : 2014.09.25
  • Published : 2014.11.01
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Abstract

In this study, the prediction methods for the crest settlement after impounding and the maximum internal settlement during dam construction were proposed through the analysis on settlement data at 46 monitored points of 37 Center-Cored Rockfill Dams (CCRDs). Results from this analysis provided that the crest settlement increases with elapsed time, and from the relationship between the dam height and the maximum internal settlement during dam construction, it is confirmed that the internal settlement was largely evaluated when the coarse-grained material was used as the dam core. This internal settlement increased in proportion to the dam height. In addition, the crest settlement of the CCRD with the core compacted with fine-grained material was relatively large. It is expected that the results of this study would provide the practical tool for the design, construction and management of CCRDs.

본 연구에서는 37개의 CCRD에 대한 계측자료(46개 지점)를 통해 댐 축조단계에서 얻어지는 계측자료를 이용하여 담수 후 댐의 정부침하량 및 내부침하량 예측기법을 제안하였다. 전체 데이터에 대한 분석 결과, 담수 후 시간경과에 따라 정부침하량이 함께 증가함이 확인되었으며, 댐 코어의 재료를 조립질과 세립질의 2가지 유형으로 구분한 댐 높이와 시공 중 최대 내부침하량의 관계로부터 조립질 재료를 사용 시의 내부침하량이 다소 크게 평가되었다. 또한 내부침하량은 댐 높이에 비례하여 증가하였으며, 댐 코어로서 세립질 재료를 사용하는 경우의 정부침하량이 상대적으로 크게 평가되었다. 본 연구결과는 향후 CCRD의 설계, 시공, 장기적 유지관리를 위한 유용한 도구가 될 것으로 전망된다.

Keywords

References

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