• 한국지반공학회논문집
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• 제22권5호
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• pp.13-26
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• 2006

본 연구에서는 인천지역 준설매립지반을 대상으로 액상화 평가방법들에 대해 검토하고, 국내 지진특성을 고려하여 지진규모 6.5을 기준으로 액상화 가능성을 비교하였다. 그리고 다짐시험시공 및 동다짐 전 후에 수행한 표준관입시험 (SPT) 및 정적콘관입시험(CPT)을 토대로 지반개량효과 및 액상화 보강효과를 평가하였다. 그 결과, 동다짐은 다짐에너지가 클수록 개량효과가 우수한 것으로 나타났으며, 동다짐 후 지반강도 증가에 따라 액상화 안전율도 크게 증가되어 내진성능 향상을 크게 도모 할 수 있는 것으로 평가되었으며, 이에 따른 매립지반의 다짐관리 방안을 제시하였다.

• 한국작물학회:학술대회논문집
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• 한국작물학회 2022년도 추계학술대회
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• pp.128-128
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• 2022

• 한국농공학회:학술대회논문집
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• 한국농공학회 2003년도 학술발표논문집
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• pp.79-82
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• 2003

This study was performed in order to analyze the changes of electrical conductivity during the growing period in Saemangum reclaimed tidal lands soils. According to USDA Salinity Laboratory classification system of salt affected soils, the reclaimed tidal land soils used in this study were saline-sodic soils. As the results obtained from analying the changes of electrical conductivity(EC) during the growing period in reclaimed tidal land soils, EC of irrigation water and soils were no difference among the fertilization quanity, fertilization method and fertilization times.

• 한국작물학회지
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• 제24권4호
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• pp.12-18
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• 1979

간척답에서 생육한 수도의 근군의 형태 형성을 알기위하여 간척답과 숙답에서 재배된 수도의 근군을 채취하여 비교·검토한 결과를 요약하면 다음과 같다. 1. 간척답에서 생육한 수도 의 근군은 작토의 표층부에 밀집되어 있는 상태였으나, 숙답에서 생육한 수도의 근군은 작토의 심층부까지 균일하게 분포되어 있었다. 2. 간척답에서 생육한 수도의 근군 발달은 숙답에서 생육한 수도의 근군보다 불량했다. 이와 같은 경향은, 특히 이식 직후 출근하거나 관근의 원기가 형성되는 하위 요소에서 뚜렷하게 나타났다. 3. 재배 토양에 관계없이 유수형성기 이후에 출근하는 요소에서는 생장중지형 관근이 점하는 비율이 생육 초·중기의 그것보다 높았다. 4. 분기근의 형성밀도는 수도의 생육후기에 출근하는 관근을 제외하고는 간척답에서 생육한 수도가 숙답에서 생육한 수도보다 높았다.

• 토지주택연구
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• 제13권4호
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• pp.125-134
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• 2022

국내에서는 폐아스팔트를 통한 순환골재를 생산, 도로 자원으로 재활용하여 폐자원 활용에 활용하고 있다. 하지만 정부부처에서 제시한 순환아스팔트 의무사용량 40%를 아스팔트 포장에 적용할 경우, 품질저하가 발생하고 현재 제한적인 사용이 이루어지고 있는 실정이다. 본 연구는 순환골재 30%를 혼입한 순환아스팔트에, 재생첨가제를 사용하여 제작한 혼합물에 대한 품질 시험 및 성능 평가를 수행하였다. 품질시험 및 성능평가를 통해 일반 가열 아스팔트를 대체하여 순환아스팔트를 사용하는데 문제가 없는지 검토하였으며 실험 결과, 일반 가열 아스팔트와 순환아스팔트의 값은 유사하여 대체하여 사용하는데 문제가 없음을 알 수 있었다. 순환아스팔트를 사용함으로써 경제성을 높이고 폐자원을 활용할 수 있는 장점이 있으며 추후 연구를 통하여 재생첨가제와 순환골재의 적정비율을 선정하여 순환골재 혼입비율을 높이고, 보다 경제적이고 환경친화적인 순환 아스팔트의 개발이 요구된다.

• 한국환경과학회지
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• 제18권4호
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• pp.463-471
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• 2009

A study on vegetation in the Mangyeong River and Dongjin River basins and the surrounding regions of the Saemangeum Reclaimed Land was conducted in a series of efforts to determine the expected ecological changes in the salt marshes, to restore their vegetation, to explore the restoring force of halophyte, to examine the community mechanism and, ultimately, to rehabilitate marshy land vegetation along the lakeside, coastal dune and salt marshes of the Saemangeum Project Area. The findings of the study may be summed up as follows: Five species such as Suaeda japonica, Salicornia herbacea, Atriplex gmelini, Aster tripolium and Suaeda asparagoides that are mostly distributed in the estuary of the Saemangeum Reclaimed Land were analyzed to examine the mechanism of halophyte to maintain their community. To find out the strategies of plants for survival and the cause of forming community structure, a research was made as for appearance ratio of biomass, root lengths and germination. With regard to biomasses of halophyte, the biomass of Suaeda japonica increases rapidly, while Salicornia herbacea adopts a strategy of unstable growth pattern by which the biomass increases slowly in parallel with its slow speed of growth since initial appearance of young sapling. In contrast, Suaeda asparagoides, Atriplex gmelini and Aster tripolium choose to adapt themselves to environment promptly by being transformed into life form of annual or biennial plant, a pattern that is presumed to be favorable and stable for survival in the later stage of growth. In short, there is a sharp distinction among the 5 species: i.e. Suaeda japonica that begins to grow fast in the length of surface and underground section but slows down from the mid-stage on; Salicornia herbacea that grows slowly in the beginning step but starts to step up from the middle onward; Atriplex gmelini and Aster tripolium growing slowly in the initial stage but fast later on; and Suaeda asparagoides that turns from the constant growth in the beginning to rapid growth in the later period. The outcomes of the analysis into status of growth and influencing factors of Suaeda japonica in the sowing field that is most widely prevalent in the Saemangeum Reclaimed Land as a sort of ecological pioneer in the salt marshes showed that the average size of grass lands, density and number of individuals increase in the natural sowing field as well as in the plowing field regardless of their physical as well as physico-chemical features of the soil as the season progresses from June to October of a year.

• 한국조류학회지
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• 제25권2호
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• pp.87-93
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• 2018

시화호 환경변화에 따른 흰뺨검둥오리의 개체수 변화를 확인하기 위해 2008년 1월부터 2014년 12월까지 매월 1회씩 조사하였다. 흰뺨검둥오리의 평균 개체수는 12,204개체이었고 점차적으로 감소하는 경향을 보였다. 변동지수(Fi)는 2010년에 2.16로 가장 높았다. 개체군 변화경향은 겨울철은 급격한 감소, 가을철과 봄철에는 보통감소, 여름철은 보통 증가경향을 보였다. 주요 서식지로는 북측간척지, 방수제, 탄도수로, 인공습지 이었다. 기온과의 상관관계는 봄, 여름, 가을은 음의 상관관계를 보였고, 겨울은 양의 상관관계를 보였다. 간척지 환경변화에 따라 흰뺨검둥오리의 군집에 영향을 미치고 있어 본 연구와 같은 자료를 토대로 효과적인 관리방안이 필요하다.

• 한국지반공학회:학술대회논문집
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• 한국지반공학회 2010년도 추계 학술발표회
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• pp.40-48
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• 2010

Saemangeum reclaimed area is needed to construct much green zone to make high-quality multi-functional land such as tide embankment, lake dike, industrial complex, environmental spaces, etc. However, growth of plants is somewhat difficult because a salinity of Saemangeum soil is very high and a soil fertility, water content of soil are low. Therefore, it is essential to initial desalination of soil and continuous management for planting base. It is recommended that a group of grassland to raise the efficiency of covering should be made in the first stage and a forest by improvement of vegetation should be made in the mid and long term stage. It is recommended that the construction of vegetation base should be made with a regular thickness of soil of good quality in multi-functional area such as a shrub and wood. In case of construction of a windbreak forest, it is necessary to make a wood base of suitable depth using soil brought from another place or filling of soil. Also, it is necessary to keep a maintenance of woods in early stage. Saemangeum reclaimed land will be brand-named worldwide tourist attractions due to construction of much green zone having high quality multi-functional facilities.

• Korean Journal of Geomatics
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• 제3권1호
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• pp.59-65
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• 2003

The merging of different scales or multi-sensor image data is becoming a widely used procedure of the complementary nature of various data sets. Ideally, the merging method should not distort the characteristics of the high-spatial and high-spectral resolution data used. To present an effective merging method for survey of reclaimed land using the high-resolution (6.6 m) Electro-Optical Camera (EOC) panchromatic image of the first Korea Multi-Purpose Satellite 1 (KOMPSA T-l) and the multispectral Moderate Resolution Imaging Spectroradiometer (MODIS) image data, this paper compares the results of Intensity Hue Saturation (IHS) and Principal Component Analysis (PCA) methods. The comparison is made by statistical and visual evaluation of three-color combination images of IHS and PCA results based on spatial and spectral characteristics. The use of MODIS bands 1, 2, and 3 with a contrast stretched EOC panchromatic image as a substitute for intensity was found to be particularly effective in this study.

• 한국지반공학회:학술대회논문집
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• 한국지반공학회 2004년도 춘계학술발표회
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• pp.219-226
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• 2004

We measure subsidences occurred in a reclaimed coastal land, Noksan industrial complex, by using JERS-1 SAR (1996-1998) and RADARSAT-1 SAR (2002-2003) dataset. SAR with a high spatial resolution (about several or several tens meter) can reveal the two-dimensional distribution of settlement that would be bardly estimated from in situ measurements. The DInSAR results show significant deformation signal associated with soil consolidation. Accuracy of the settlements estimated by 2-pass differential interferometry (DInSAR) is evaluated using the measurements of settlement gauge. A two-dimensional subsidence map is constructed from 7 qualified pairs. Comparing the JERS-1 radar measurements with the ground truth data yields the correlation coefficient of 0.87 (RMSE of 1.44 cm). The regression line shows the gradient of 1.04 and intercepts close to the origin, which implies that the unbiased settlement can be measured by DInSAR technique. The residual settlements are also detected from RADARSAT-1 pairs. The extent and amount of the settlements are matched well with ground truth data.