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Research Article

Stability of Landfill Sites Reinforced Using the Compacted Earth Method

압성토로 보강에 따른 폐기물 매립지반의 해석적 검증에 관한 연구

Wooyoul Lee1
,
Seokjin Oh2
,
Hyeok Seo2*
이 우열1
,
오 석진2
,
서 혁2*
1Graduate Student, Department of Civil Engineering, Chosun University
2Assistant Professor, Department of Civil & Environmental Engineering, Honam University
1조선대학교 토목공학과 박사과정
2호남대학교 토목환경공학과 조교수
*Corresponding Author
30 June 2025. pp. 195-209
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Abstract

Landfill stability is a critical issue in geotechnical engineering, particularly the seismic resistance of landfill sites. We evaluated the seismic stability of landfill sites that use the compacted earth method, a counterbalance reinforcement technique. A series of 1 g shake table tests were conducted to examine the dynamic response of landfill slopes reinforced with compacted earth. Peak ground acceleration (PGA) was measured at different depths, and numerical simulations were performed to verify the experimental results. Our results indicate that reinforcement significantly reduces seismic amplification, with greater stability observed with 15 m of compacted earth reinforcement compared with 10 m of reinforcement. Our study also highlights discrepancies between experimental and numerical analyses, suggesting the need for further refinement in seismic response modeling. These results provide valuable insights into methods of improving landfill stability during seismic events.

Keywords
waste landfill
counter balance method
1g shaking table
accelerometer
numerical analysis

폐기물 매립지의 안정성은 지반공학에서 중요한 연구 주제이며, 특히 내진 성능에 대한 검토가 필수적이다. 본 연구에서는 압성토 공법을 적용하여 매립지의 내진 안정성을 평가하였다. 1g 진동대 시험을 통해 압성토 보강이 적용된 매립지 사면의 동적 응답을 분석하였으며, 가속도계(peak ground acceleration, PGA) 값을 깊이별로 측정하고 실험 결과를 검증하기 위해 수치 해석을 수행하였다. 연구 결과, 압성토 보강이 지진 시 지반의 증폭률을 감소시키는 효과가 있으며, 특히 15 m 보강이 10 m 보강보다 더욱 안정적인 거동을 나타내는 것으로 확인되었다. 또한, 실내 실험과 수치 해석 간의 차이를 분석하여 내진 응답 해석 모델의 개선 필요성을 제시하였다. 본 연구 결과는 폐기물 매립지의 내진 성능 향상을 위한 기초 자료로 활용될 수 있다.

키워드
폐기물 매립지
압성토 공법
1g 진동대
가속도계
수치해석
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Information
  • Publisher :Korean Society of Engineering Geology
  • Publisher(Ko) :대한지질공학회
  • Journal Title :The Journal of Engineering Geology
  • Journal Title(Ko) :지질공학
  • Volume : 35
  • No :2
  • Pages :195-209
  • Received Date : 2025-03-24
  • Revised Date : 2025-06-20
  • Accepted Date : 2025-06-25
  • DOI :https://doi.org/10.9720/kseg.2025.2.195
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