• Journal of Korean Society for Geospatial Information Science
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• v.15 no.4
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• pp.97-102
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• 2007

Recently, coastal damage according to the natural disaster like storm-surge, overflowing of the sea has been massively increased. In case of earth fill at the seaside, there are a lot of weak areas of the natural disaster and it has also high possibility that a large disaster happens. Thus flood expectation map in the reclaimed land using 3D spatial information was produced in this study. The area around Myungji, Kangsugu, Busan which was made with the large scale earth fils at the seaside was designated as a study area. Observation of both costal datum and ground height using the tidal date and field surveying dates was conducted. Terrain model using the GIS program was produced and than 3D building model was produced using 3D MAX. It was shown that there are possibility more than 50% if over 4.5m storm-surge is happening, as a result of calculating the virtual flooded area on the produced cartographic map.

• Journal of the Korean GEO-environmental Society
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• v.6 no.4
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• pp.47-58
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• 2005

Development of underground space is conducted for various useful facility and underground structures and deep excavation technology for reclaimed area has been researched and developed. The seepage flow and behavior of phreatic line in reclaimed area was predominated by transient flow caused by tidal action. Also the soil-water characteristic relation is most important factor for transient flow analysis, therefore the research about the soil-water characteristic is strongly required. In this paper, laboratory tests (pressure cell, desiccator, and tensiometer test) and theoretical analysis were performed to investigate the soil-water characteristic such as air-entry value, metric suction, and residual water content. And the feasibility of prediction method for soil-water characteristic are presented by transient seepage analysis and comparison between analysis results and in-situ measured seepage flux in LNG TK-00 storage tank. Based on the result of laboratory and theoretical analysis, Fredlund and Xing's method provide to work out well for reclaimed ground soils. Also, the transient analysis result is more reasonable and effective for design of deep excavation work in coastal and reclaimed ground.

• Journal of Korean Society of Coastal and Ocean Engineers
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• v.21 no.5
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• pp.380-390
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• 2009

This study was conducted as a part of investigating pre-reclamation shorelines from aerial photographs to estimate coastal land area at reclaimed lands (Anjeong industrial complex, Myeongji residental complex, and Noksan industrial complex), southeastern coast of Korea. To assess how the shorelines were suitable for the calculation of coastal lands, we constructed shoreline change data. Secondary ground control points were used to accomplish triangulation for old aerial photographs. Two kinds of shorelines were mapped; one was the shoreline based on approximately highest high water level (AHHWL) and the other was the high water line based on wet/dry signiture. These shorelines were consistent at artificial coast. Shoreline change data were built with a variety of levels of error due to detailed differences in the photograph scale, quality of image, type of ground control point and type of shoreline. Thus assessment of the pre-reclamation shorelines at the level of qualitative analysis for the trend of shoreline changes was satisfactory. Most of shoreline changes before reclamation in this study were associated with coastal development. Investigation of shoreline attributes in relation to aerial photographs allowed us to understand the shoreline changes.

• Proceedings of the Korea Water Resources Association Conference
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• 2015.05a
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• pp.376-376
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• 2015

거주지나 공장부지와 같은 이용 가능한 토지를 만들기 위하여 해안 지역을 매립하는 토목공사가 전세계 곳곳에서 이루어지고 있다. 매립공사에서 매립토량의 결정은 경제성 부분에서 매우 중요하나 국내는 어항 항만 설계기준(2014)에 의하여 단순히 입경별로 유실율과 유보율을 산정하여결정하고 있는 실정이다. 따라서 본 연구에서는 원형의 매립호안 주변의 유사 거동을 분석하기 위하여 수리실험을 통한 연구를 진행하였다. 수리실험은 길이 13.0 m, 폭 5.0 m, 수위 0.10 m의 직사각형 단면의 개수로에서 수행되었으며, 실험에 사용된 유사는 주문진사($d_{50}=1.0mm$)와 안트사이트($d_{50}=0.44mm$)를 사용하였다. 원형 호안은 방수처리가 되어있는 목재로 제작하였고 두 가지 유사 모두 매립지역에서 형성되는 모래의 형상은 차이를 보였고 일정량의 유사가 호안 하류측에 쌓이는 것으로 나타났다. 선행 연구와 달리 호안에서 형성되는 모래의 이송된 형상을 관측하였다. 향후 모래 유입 위치를 달리하여 퇴적된 모래의 형성을 정량적으로 관측이 가능하다면 매립공사의 경제성을 높일 수 있을 것이라 기대된다.

• Proceedings of the Korean Society of Coastal and Ocean Engineers Conference
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• 2002.08a
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• pp.266-269
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• 2002

최근 항구 및 해안지역의 오염과 대규모 준설 매립으로 인하여 습지 및 환경 생태계 파괴 가 심각한 문제로 대두되고 있다. 또한 파도와 조수의 이동으로 인한 해안침식, 태풍이나 폭풍 둥의 자연재해로 인한 해안 및 항만구조물의 파괴가 빈번히 발생되고 있다. 이에 지오텍스타일 공법을 해안생태계를 복원 및 보전하고 해안 및 항만구조물로 활용하기 시작했다. (중략)

• The Journal of Engineering Geology
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• v.14 no.1
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• pp.1-20
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• 2004

This study focuses on the hydrochemical characteristics in goundwater affected by reclamation at 2000 Sydney Olympic Games site, Sydney, Australia. The Olympic Games site can be divided into three areas, i.e. reclaimed areas; landfill areas and non-infilled areas. In the current work, 'reclaimed areas' were previously estuarine, and were filled with waste materials and are now above present high tide level, whereas 'landfill areas' are areas where deposition of waste materials occurred above sea level. No deposition of waste took place in 'non-infilled areas'. This study was also evaluated by three different types such as deep boreholes, shallow boreholes and standpipes. The hydrochemishy of groundwaters in reclaimed and non-in-filled areas is characterized by Mg- and Ca-enrichment, whereas groundwaters in landfill areas are elevated in K and NO₃. Na, K and Mg are the dominant cations in groundwater from reclaimed areas and Na and K are the dominant cations in groundwater in landfill areas. Na and Mg are the dominant cations in groundwater in deep boreholes, whereas Na and K are the dominant cations in groundwater in shallow boreholes and standpipes. There is no distinct trend in heavy metals with electrical conductivity in the groundwater between the re-claimed, landfill and non-infilled areas. Fe and Mn in landfill areas with respect to reclaimed areas and non-infilled areas show a distinct increase in concentration with declining pH. Mean electrical conductivity values in the deep and shallow boreholes are higher than that of standpipes, but the minimum and maximum value of electrical conductivity in groundwater in standpipes shows remarkably different value, probably due to perched pond. There is no correlation between Cu, Pb, Zn, Cr concentrations in groundwater with pH, from deep boreholes, shallow boreholes and standpipes, except for Fe and Mn, which demonstrate increasing concentrations with declining pH. The results revealed a close association between elevated concentrations in groundwater and the presence of fill materials at the site. Trace metals teachability from re-claimed soils adjacent to estuary plays a significant role in determining their potential environmental risk to surrounding environment.

• Journal of the Society of Disaster Information
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• v.14 no.3
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• pp.296-304
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• 2018

Purpose: This study was carried out to evaluate the liquefaction potential of the land reclamation area in Incheon by using the ProShake program for long frequency Hachinohe seismic wave and short frequency Ofunato seismic waves to interpret ground response. Method: The interpretation results and the Modified Seed and Idriss method were used to evaluate the liquefaction potential. The liquefaction potential index which proposed by Iwasaki was calculated to be used as a guide line to represent the liquefaction evaluation results at the given location. The equivalent liquefaction factor of safety presented by Kang(1999) was used as a quantitative index to draw up the mapping of liquefaction potential. Results: This paper presents the mapping of liquefaction potential for the Incheon seaside reclamation area using both the liquefaction potential index and the equivalent liquefaction factor of safety. Conclution: As a result, the mapping of liquefaction based on the liquefaction potential index and equivalent liquefaction factor of safety shows similar distribution pattern.

• Journal of Navigation and Port Research
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• v.32 no.6
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• pp.489-497
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• 2008

The government is now driving a policy that development of industrial complex site for the local manufacturing industry by reengineering and expanding the existing sites or reclamation of coastal zone. Therefore, it is necessary to analyze the impact of the coastal reclamation work in terms of physical and environmental characteristics. This study is also dealing with the impact of coastal reclamation for national industrial complex site to the ocean physical characteristics, variation of sedimentation and diffusion system and marine environment from the analysis of the field measurement and numerical simulation. The site for application is at the coastal boundary near Onsan national industrial complex, Ulsan metro city. In order to verify the numerical simulation result, it is compared to the collected data for tide, current, and sediments of the existing measurement and field observation at the selected stations for this study. The verified numerical models were applied to the actual field and the future change was analyzed.

• Magazine of the Korean Society of Hazard Mitigation
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• v.7 no.1 s.24
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• pp.19-35
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• 2007

본고는 건설교통부의 지역특성화사업의 일환으로 진행 중인 "차세대 해안공간확보기술"에 관하여 일반 적인 사항을 설명하고자 한다. 본 과제 "차세대 해안 공간확보기술"는 2005년 06월 30일부터 2010년 07년 29일 까지 진행 예정이다. 과제의 연구를 위하여 주관기관 1개, 협동연구기관 4개, 참여기업 25개로 구성되어 있으며 총 연구비는 약 95억원이다. 2007년 3월 현재 2차년도 연구를 진행 중이다. 본 과제는 해안공간확보를 위하여 방(防) 용(用) 보(保)를 목표로 하고자 한다. 즉, 해안을 방어, 이용, 보전을 대상으로 각각의 세부과제를 분할하였다. 세부과제는 방어에 해당하는 제1세부과제인 해안저지대 방호기술, 이용에 해당하는 제2세부과제 해안매립공간 확보기술과 제3세부과제 해안 레저공간 확보 기술, 보전에 해당하는 제4세부과제 해안유지 및 확보기술로 구성되어 있다. 본 과제는 기술적 목표 외에 기반구축, 기업지원, 정책지원, 지역기여, 연계활동(홍보활동, 국제협력, 창업지원) 등의 의무적 활동을 요구하고 있다. 따라서 본 연구단은 언론을 통한 홍보, 지방정부에 대한 정책자문, 참여자 및 기술자를 대상으로 워크샵, 심포지움을 통한 교육 및 홍보, 일본 공항항만연구소와 방문 세미나개최, 요코하마국립대학 시바야마 연구실과 국제협력을 위한 양해각서 체결, 지역을 중심으로 한 "해안공간학회"설립 등을 목표로 하고 있다.

• Journal of the Korean Society of Groundwater Environment
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• v.3 no.1
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• pp.1-8
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• 1996

Coastal waste dump in Pohang is composed of slags and sludge of POSCO. Hydraulic parameters in the coastal waste dump are very different from those in municipal landfills and general unconsolidated or fractured aquifers. In the waste dump pumping or slug tests are not adequate for the estimation of hydraulic parameters. Time-lag and amplitude of the tidal fluctuation of groundwater table are used to determine the hydraulic parameters. Groundwater table at the groundwater observation wells is about 40 cm higher than the sea level. The contributing factors of the groundwater-rise are estimated. Vertical profile of some chemical constituents in groundwater indicates the gradual transition of the fresh groundwater at the uppermost position to the sea water at the bottom.