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

인천지역 항로 준설토의 침강자중압밀시험에 의한 유보율 결정에 관한 연구

Eun-Chul Shin1*
,
Young-Jin Park2
,
Jeong-Ku Kang3
신 은철1*
,
박 영진2
,
강 정구3
1Member, Professor, Dept. of Civil and Environmental Engineering, College of Urban Science, Incheon National Univ
2Member, Graduate Student, Dept. of Civil and Environmental Engineering, College of Urban Science, Incheon National Univ.
3Member, Research Professor, Urban Science Institute, College of Urban Science, Incheon National Univ.
*교신저자. *Corresponding Author. 
30 December 2017. pp. 57-66
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Abstract

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 sedimentationconsolidation, 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.

Keywords
Marine clay
Dredged soil
Content of fine grained soil
Volume change ratio
Retention ratio

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 준설매립공 사에 제시된 입도별 유보율의 포괄적인 측면을 보완할 수 있는 세립분 함유율에 따른 유보율을 산정하여 제시하였다.

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Information
  • Publisher :Korean Geosythetics Society
  • Publisher(Ko) :한국지반신소재학회
  • Journal Title :Journal of the Korean Geosynthetics Society
  • Journal Title(Ko) :한국지반신소재학회 논문집
  • Volume : 16
  • No :4
  • Pages :57-66
  • Received Date : 2017-11-20
  • Accepted Date : 2017-11-30
  • DOI :https://doi.org/10.12814/jkgss.2017.16.4.057
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