• Title/Summary/Keyword: reclaimed land

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만경강 유역의 오염부하 유출특성에 관한 연구 (A Study on the Characteristics of Pollutant loads runoff in the Drainage Area of Mangyeong River)

  • 엄명철;이광야;권순국
    • 한국농공학회:학술대회논문집
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    • 한국농공학회 2003년도 학술발표논문집
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    • pp.607-610
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    • 2003
  • The object of this study is to analyze the characteristics of pollutant loadings on rainy day compared with normal day in the Mangyeong catchment area of Saemangeum tidal reclaimed area. On rainy day, the concentrations of BOD, COD, T-N and T-P are smaller than those on normal day, in spite of the pollutant loading themselves are increased significantly on rainy day due to non point source pollution, such as CSOs(combined sewage overflows), runoff from agricultural land use and so on.

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Challenges in Structural Design of W-Project

  • Kim, Jong Soo
    • 국제초고층학회논문집
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    • 제3권3호
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    • pp.199-204
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    • 2014
  • W-Project is 70-story mixed-use residential building complex project in Busan, the second biggest city in South Korea. As it is a high rise building complex located at the coast, the residents have great ocean view from the height. Though, there were many difficult challenges to be solved to secure structural safety and meet the serviceability requirements. As it is located on the reclaimed land, securing the foundation bearing capacity on soft soil is the first issue to be solved for the stable structure. W-Project. Busan on the way usual track of typhoon, wind load on structure is also critical for structural safety and serviceability for occupants due to wind vibration. This paper will address process of lateral load resisting structural system of W-Project.

The state of Act and Policy for Recycling of Construction Industry Wastes

  • Ahn, Ji-Whan;Lee, Yong-Hee;Kim, Hyung-Seok;Lee, Bong-Han;Kim, Hwan;Oh, Jae-Hyun;Gung, Yeon-Nam;Kang, Byung-Ok;Kim, Kyung-Soo
    • 대한전자공학회:학술대회논문집
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    • 대한전자공학회 2001년도 The 6th International Symposium of East Asian Resources Recycling Technology
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    • pp.671-674
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    • 2001
  • In Korea, because of the shortage of reclaimed lands and disposal sites and the small size of national land, A political measure for construction wastes recycling is needed. therefore we studied the current state of construction wastes recycling and the act for it. And we analyzed problems and unreasonable regulations regarding the wastes. So we suggested an alternative act to increase the construction wastes recycling.

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광양만 임해매립지 곰솔 식재지역 토양환경의 수직적 특성 (Vertical Soil Environmental Characteristics at Landscape Planting Sites of Pinuse thunbergii Parlatore in Reclaimed Land from the Sea on Kwangyang Bay)

  • 김도균;김용식;김민수;오구균
    • 한국환경생태학회지
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    • 제15권2호
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    • pp.186-192
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    • 2001
  • 본 연구는 전라남도 광양만의 6개 임해매립지 식재지반의 토양환경 특성을 조사분석하였다. 토심이 깊어짐에 따른 토양성질의 수직적 특성은 각 식재지반별로 다르게 나타났다. 토양성질의 수직적 특성에 영향을 미치는 요인은 개토와 준설토의 이질서, 토양의 물리. 화학성의 교란, 지반하부에 잔존하는 염류의 이동, 유기물의 이동과 강우나 가뭄 등이었다. 수목생 상 유리한 식재지반은 식재지반의 높이가 낮은 곳보다 높은 성토지역이었으며, 이것은 토양의 물리. 화학적 교란과 지하부의 염류로부터 안전성이 높기때문이었다. 조경식물의 생육상 불리한 토양성질들은 토성의 이질서, 토양의 경화, 알칼리성 염류토양, 높은 ECe, Na, K. 저농도의 Ca, Mg, T-C등이었으며, 이러한 토양성질들은 표토보다는 지하의 근권부에 주로 분포하여 있었다. 따라서 임해매립지 식재지반 조성시에는 토양의 성질이 교란되지 않은 방법이 모색되어야 하며, 조경수목의 생육에 관련된 토양환경조사는 지하근권부 이하까지 정밀하게 조사. 분석하여야 할 것으로 사료되었다. 사료되었다.

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Bottom Ash를 잔 골재 대체재로 사용한 콘크리트의 내구성에 관한 실험적 연구 (An Experimental Study on the Durability of Concrete using the Bottom Ash as a part of Fine Aggregate)

  • 최세진;이성일;정용;김양배;오복진;김무한
    • 한국콘크리트학회:학술대회논문집
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    • 한국콘크리트학회 2003년도 봄 학술발표회 논문집
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    • pp.19-24
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    • 2003
  • Recently, the by-product of coal ash has been increased by increase of consumption of electric power. So in view of environmental aspect, it is important to secure a reclaimed land and treatment utility for coal ash. This is an experimental study to compare and analyze the properties of high volume coal-ash concrete using the bottom ash. For this purpose, the mix proportions of concrete according to the replacement ratio of bottom ash(l0, 20, 35, 50%). And then air content, slump, compressive strength, durability test were performed. According to test results, it was found that the compressive strength of bottom ash concrete was similar to that of plain concrete(BA0). And the carbonation depth of bottom ash concrete increased as the replacement ratio of bottom ash.

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왕겨충전에 따른 암거의 제염 효과 (Desalinization Effect of Subsurface Drainage System with Rice Hull Packing)

  • 이승헌;안열;류순호;정영상
    • 한국농공학회지
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    • 제43권5호
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    • pp.63-69
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    • 2001
  • The main purpose of this study is to seek desalinization effect of subsurface drainage system with rice hull packing in Dae-Ho Reclaimed Land. After 4 years installed sub-surface drainage system, distribution of drained water electric conductivity (ECw) was 4.43~12.78 ds/m. The soil profile showed partial development of the soil structure and compaction of subsoils with increased bulk density. The bulk density of the subsoil was 1.42~1.66 g/cm$^3$, which might limit root growth. The soil color changed near the drainage pipe line. Distribution of soil extract solution ECe and SAR as subsurface drainage pipe position and drainage canal distance showed desalinization effect of subsurface drainage system with rice hull packing as widening effective zone of subsurface drainage pipe.

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준설토 활용을 위한 환경기준과 처리공법에 대한 고찰 (The Study of Environmental Standard and Treated Method for Beneficial Use of Dredged Materials)

  • 배윤신;윤길림
    • 한국재난정보학회 논문집
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    • 제7권4호
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    • pp.247-258
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    • 2011
  • 본 연구에서는 국내 육상 및 해상 준설토 활용관련 환경기준과 처리공법을 총 망라해 고찰해 보았다. 해양준설토 활용방법 제시를 위하여 고화벽돌 및 경량벽돌 등 시제품을 제작하였으며 매립복토재로서 활용성도 매립작업을 원할히 하기위한 강도(대략 50kPa)를 만족하였다.

준설토의 유실율 결정에 관한 연구 (A Study on the Determination of Loss Ratio in Dredged Soils)

  • 김석열;김승욱;노종구
    • 한국농공학회:학술대회논문집
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    • 한국농공학회 1999년도 Proceedings of the 1999 Annual Conference The Korean Society of Agricutural Engineers
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    • pp.606-611
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    • 1999
  • Recently , the hydraulic fill method is commonly used in many reclamation projects due to lack of fill materialss. The method of hydraulic fill i recalmation is executed by transporting the mixture of water -soil particles into a relcaimed land through dredging pipes, then the dredged soil particels settle down in thewater orflow over an out flow weir with the water. The amount of the volume reductions of dredged soil is considered the sum of the overall settlement by descication shrinkage and self-weigth consolidation and the loss of soil particles flow over a weir. In the present study, hydrometer analysis was performed with the soil samples obtained bofore and after dredging to estimate the amount of soil particles residual at reclaimed area and the loss of soil particles , then it was suggested the method of determining the loss ratio of dredged soils from the tests results. The hydrometer analysis of in-situ soil samples showed that the loss ratio of dredged soils is lowest at the nearest point to dredge pipe and highest at the nearest point of out flow weir.

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