한국지반신소재학회논문집 (Journal of the Korean Geosynthetics Society)

  • 제16권4호
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  • Pages.57-66
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  • 2017
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  • 2508-2876(pISSN)
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  • 2287-9528(eISSN)
한국지반신소재학회 (Korean Geosynthetics Society)
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인천지역 항로 준설토의 침강자중압밀시험에 의한 유보율 결정에 관한 연구

Retention Ratio of Dredged Soil at Incheon Habour Route using Self-Weight Consolidation Test

  • Shin, Eun-Chul (Dept. of Civil and Environmental Engineering, College of Urban Science, Incheon National Univ.) ;
  • Park, Young-Jin (Dept. of Civil and Environmental Engineering, College of Urban Science, Incheon National Univ.) ;
  • Kang, Jeong-Ku (Urban Science Institute, College of Urban Science, Incheon National Univ.)
  • 투고 : 2017.11.20
  • 심사 : 2017.11.30
  • 발행 : 2017.12.30
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초록

준설 매립 부지의 최종 계획고를 얻기 위한 초기 준설 매립량과 매립두께를 결정하고 자중압밀에 소요되는 시간을 예측하기 위해 인천지역 항로 준설 시료에 대한 자중압밀시험과 공학적 특성을 분석하였다. 준설투기된 시료의 시간경과에 따른 함수비, 간극비 및 체적변화비에 관한 인자를 Yano의 경험식을 이용하여 평가하였다. 세립분 함유율이 낮은 경우 침강압밀계수의 변화폭이 작게 나타났으며, 세립분 함유율 50%에서 가장 크게 나타났다. 자중압밀에 따른 체적변화비를 이용하여 준설매립공사에 제시된 입도별 유보율의 포괄적인 측면을 보완할 수 있는 세립분 함유율에 따른 유보율을 산정하여 제시하였다.

Self-weight consolidation test and soil property of dredged soil at Incheon habour route were analyzed to determine the initial dredging reclamation amount, reclamation depth, and estimating the required time of self-weight consolidation with calculation of the final planned height of dredging reclamation site. The moisture content, void ratio and ratio of volume change with elapsed time after throwing were estimated through Yano's empirical equation. As a result, there was a less variation in elements when fine-grained soil content was low as similarly to the behavior of coefficient of sedimentation-consolidation, Cs and the highest variation was shown at the fine-grained soil content of 50%. The retention ratio according to the fine grained soil content that could reinforce the comprehensive aspect of retention ratio for each particle size presented in the standard of estimate for reclamation construction work was calculated and presented using the calculated ratio of volume change.

키워드

참고문헌

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