• 한국방재학회:학술대회논문집
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• 2007.02a
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• pp.579-582
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• 2007

In this paper, the inundation simulations were carried out by using GIS tools for the analysis of detention efficiency based on the results of runoff analysis according to location and scale of regional detention facilities. The inundation maps could be drawn by the inundation simulations, and the locations and magnitude of inundation areas could be estimated through the inundation maps. The inundation simulations with GIS tools are approved to be the one of the useful method in designing optimized location and scale of regional detention facilities.

• Journal of Korea Water Resources Association
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• v.50 no.4
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• pp.223-232
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• 2017

The ability to defend against floods in urban areas was weakened, because the increase in the impervious rate of urban areas due to urbanization and industrialization and the increase in the localized torrential rainfall due to abnormal climate. In order to reduce flood damage in urban areas, various runoff reduction facilities such as detention ponds and infiltration facilities were installed. However, in the case of domestic metropolitan cities, it is difficult to secure land for the installation of storm water reduction facilities and secure the budget for improving the aged pipelines. Therefore, it is necessary to design a storage system (called the detention pond in trunk sewer) that linked the existing drainage system to improve the flood control capacity of the urban area and reduce the budget. In this study, to analyze the effect of reducing runoff amounts according to the volume of the detention pond in trunk sewer, three kinds of virtual watershed (longitudinal, middle, concentration shape) were assumed and the detention pond in trunk sewer was installed at an arbitrary location in the watershed. The volume of the detention pond in trunk sewer was set to 6 cases ($1,000m^3$, $3,000m^3$, $5,000m^3$, $10,000m^3$, $20,000m^3$, $30,000m^3$), and the installation location of the detention pond in trunk sewer was varied to 20%, 40%, 60%, and 80% of the detention pond upstream area to the total watershed area (DUAR). Also, using the results of this study, a graph of the relationship and relational equation between the volume of the detention pond in trunk sewer and the installation location is presented.

• Journal of the Korean Society of Marine Environment & Safety
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• v.25 no.6
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• pp.708-716
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• 2019

After the Sewol ferry disaster, the maritime safety supervisor system was introduced to strengthen maritime safety control for coastal vessels. If any critical defect is found in vessel facilities during periodical or occasional guidance and supervision on a vessel, a maritime safety supervisor takes an administrative measure: detention of the vessel until it has been completely corrected. The detention order is one of the most powerful regulations exercised by a maritime safety supervisor. It would not be an overstatement to say that the guidance and supervision conducted by a maritime safety supervisor is very important for the safety of a vessel and protection of the maritime environment. However, the regulatory level of each Regional Office of Oceans and Fisheries toward vessels may vary with the enforcers, and an individual's intentional act or negligence might occur during the execution process. Detention of a coastal vessel by the Regional Office of Ocean and Fisheries can easily lead to delayed navigation, and a vessel owner may suffer economic loss from suspension of a charter party. Nevertheless, the Maritime Safety Act does not prescribe filing a petition for objection to the measure of detention order by a maritime safety supervisor. To overcome this problem, therefore, the objection procedure under the Maritime Safety Act has to be reformed to reclaim a right against an inappropriate detention order measure caused by an individual's intentional act or negligence through a formal objection.

• Proceedings of the Korea Water Resources Association Conference
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• 2008.05a
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• pp.759-763
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• 2008

도시의 개발은 토지이용상태를 변화시키고 필연적으로 도시유역내에서 홍수량을 증가시키게 된다. 이에 따라 정부에서는 자연재해대책법에 근거하여 사전재해영향성검토 등의 협의수단을 마련하였고, 도시개발에 따라 증가된 홍수량을 저감하기 위한 방법으로 유역내 저류지를 설치할 것을 권장하고 있다. 본 연구에서는 유역내 저류지를 계획할 때 저류지의 위치와 규모를 산정하기 위하여 도시유출모형인 SWMM 모형과 비선형 최적화 기법인 유전자알고리즘(GA)을 연계하였다. 이렇게 구축된 연계모형의 결과는 유역내에 저류지의 최적 위치와 규모를 설정하기 위한 방안을 마련해 줄 것으로 판단된다. 따라서 기존에 임의로 저류지의 위치를 결정하고 규모를 산정하는 방법의 대안으로 활용될 수 있을 것으로 기대된다.

• Journal of the Korean Institute of Landscape Architecture International Edition
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• no.2
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• pp.25-31
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• 2004

Newly revised Urban Park Act and Land Planning Law are evaluated. Through exploring their functions and limits. Critical guidelines for Green Space Preservation and Planning Law are suggestec. The following is the summary of the findings: 1. New urban and regina! planning system has the foundation for green space plannig expressed as environmental planning, green space planning, landscape planning and park planning. 2. New Urban park act broadens and diversifies the range of urban park and green space(eg, stream and river, road, detention pond etc.) 3. The Urban Natural park items are removed because of long tenn unconstructed urban facilities and the new concept of 'Urban Park Zone' are inserted. And Green Space Preservation District and Urban Greening District's were introduced. And system of Contract of green space utilization and Agreement of Greening were adapted. 4. There exists new emerging needs for establishment of comprehensive green space preservation and planning law. 5. And the green space system can be classified to preservation system, recreation system and scenery system .. 6. The types of proposed green space planning are regional green space plg. urban green space plg, and district unit green space plg.