• 한국수자원학회논문집
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• 제40권2호
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• pp.125-134
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• 2007

본 연구의 목적은 치수안정성을 고려하여 새롭게 개발된 식생 호안 공법들의 적용성을 검토하는 것이다. 호안의 적용성은 치수 안전성과 환경성의 두 가지 측면을 통하여 검토되었다. 치수 안정성은 파주시에 위치한 동문천에서의 현장 실험과 수로 실험을 통하여 검토하였으며, 환경성은 동문천 시험 시공 지점에 대한 2년간의 식생 모니터링 결과를 분석하여 검토하였다. 연구 결과 개발된 식생 호안 모두 적절한 치수 안전성과 우수한 녹화능력이 있는 것으로 나타났다. 실험 결과 분석을 통하여 평균 유속과 평균 소류력에 대하여 개별 호안의 최대 적용 범위를 제시하였다.

• Structural Engineering and Mechanics
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• 제28권1호
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• pp.1-18
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• 2008

The conventional design of bridge piers against scour uses scour equations which involve number of uncertain flow, sediments and structural parameters. The inherent high uncertainties in these parameters suggest that the reliability of piers must be assessed to ensure desirable safety of bridges against scour. In the present study, a procedure for the reliability assessment of bridge piers, installed in main and flood channels, against scour has been presented. To study the influence of various random variables on piers' reliability sensitivity analysis has been carried out. To incorporate the reliability in the evaluation of safety factor, a simplified relationship between safety factor and reliability index has been proposed. Effects of clear water (flood channel) and live bed scour (main channel) are highlighted on pier reliability. In addition to these, an attempt has also been made to explain the failure of Black mount bridge of New Zealand based on its pier's reliability analysis. Some parametric studies have also been included to obtain the results of practical interest.

• 기술사
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• 제32권6호
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• pp.94-99
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• 1999

Recently, flood damage is rapidly increasing because of warming of globe, urbanization and industrialization. As a countermeasure to prevent these flood damages, it is quite required to extend the flood control ability by improving the objective rivers in the watershed and building more medium to large scale reserviors. Simultaneously repairing and rehabilitation of facilities through the safety diagnosis for reinforcement of the facilities should be continuously proceeded. Also extensive implementation of drainage improvement, establishment of prevention and refairing system against flood damage and raise of accuracy of weather forecasting should be proceeded.

• 한국물환경학회지
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• 제29권1호
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• pp.45-54
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• 2013

This study analyzes the reduction effects of runoff and flood damage through different arrangements of stormwater storage facilities. Three scenarios based on the spatial allocation of storage capacity are used: concentrated, decentralized and combinative. The characteristics of runoff and flood damage by scenario are compared. The XP-SWMM model is used for runoff simulation by the probable rainfall of return period. The result shows that the concentrated arrangement of storage facilities is most effective to reduce the amount of peak flow and to delay the time of peak flow. Yet, while the concentrated arrangement is most effective to reduce the inundation damage, it is not effective to reduce runoff volume. The decentralized arrangement is most effective to reduce runoff volume. The combinative arrangement is effective not only the runoff reduction but also the reduction of flood damage. The result indicates that the flood mitigation strategies against heavy rainfall need to consider decentralized on-site arrangement for the reduction of runoff volume along with concentrated off-site arrangement of storage facilities.

• 한국관개배수논문집
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• 제12권1호
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• pp.123-131
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• 2005

• 한국방재학회:학술대회논문집
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• 한국방재학회 2008년도 정기총회 및 학술발표대회
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• pp.195-198
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• 2008

본 연구는 도심지 유역인 경기도 부천 여월동 단지 내의 도시하천에 대해서 유출 및 홍수 특성을 분석하였다. 해당 유역의 하천은 평상시에는 매우 적은 유량만이 흐르고 있으나, 홍수 시에는 상대적으로 높은 홍수위 및 유속으로 인해 홍수 피해의 위험성을 안고 있다. 홍수에 대한 안전성을 확인하기 위하여 유출 해석 모형을 적용하고, 또한 해당 유역에 대해 구축된 GIS 자료 및 하천 단면과 HEC-RAS를 이용, 홍수위를 예측하여 치수 안정성을 검증하고, 홍수시의 유속을 산정하여 하천 시설물과 자연형 호안 공법에 대한 홍수 방어 능력을 검토 하였다. 검토 결과 다목적 소하천을 목적으로 설치된 하천 구조물로 인하여 홍수 피해 발생위험이 있었으며, 홍수시에도 높은 유속으로 인한 불안요소를 포함하고 있었다. 이러한 주거지역내 소규모의 도시 하천에 대한 홍수 유출 해석에서는 홍수 유출 외에도 구조물에 의한 배수위 변동과 홍수시 유속으로 인한 영향과 같은 여러 위험 요인에 대하여 함께 고려해야 할 것으로 판단된다.

• 해양환경안전학회지
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• 제1권2호
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• pp.107-118
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• 1995

This study is for decision making on distribution of resources so as to improve the effectiveness of initial disaster relief efforts. It is very important that relief efforts should be accomplished appropriately at the initial disaster. Furthermore, efficient allocation of relief resources such as rescuer, shelter, relief goods, relief funds, medical and relief equipments is also the first step to achieve main objective of relief efforts when disaster occurs. For this purpose, this study establishes flood as a imaginery disaster and develops a model for efficient distribution of resources when flood outbreaks. This model fixes initial 72 hours, which is subdivided into three intervals, as a initial disaster range. The model is to set a prioity against alloction of relief resources by each time zone which is related to damaged degree( Red Tag, Yellow Tag, Green Tag). Experts in this field input their experience into this model, and these are analyzed by Analytic Hierachy Process(AHP)/Expert Choice(EC) software. Therefore, we can decide a prioity against distribution of resources by each time zone which is in accordance with damaged degree. The result of this study would be helpful to a person who is in charge of relief from calamity in order him to make a decision toward distribution of resources.

• 교육녹색환경연구
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• 제11권3호
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• pp.25-35
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• 2012

Even though newly formed schools do struggle to strengthen their security in safety, existed schools have limitations for active response against natural disaster. From analyzing the results of accident cases and states in misfortune and the safety supervision of school facilities, it is said that damages by wind, flood and fire are typical types of disaster accidents. Also, according to the basic law of misfortune and the safety supervision, it emphasizes education, training, and actions that prevent from being a victim of natural disaster. In terms of these finding, establishing disaster safety organization, control system and having students an opportunity to learn how to response against disaster should be critical component in managing disaster safety of school facilities.

• 한국농공학회지
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• 제45권6호
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• pp.109-118
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• 2003

As a fundamental research to establish a safety operation plan for irrigation dams, this study presents hydrologic analysis conducted in Sungju Dam watershed based on various rainfall data. Especially those reservoirs without flood control feature are widely exposed to the risk of flooding, a safe and optimized operation program need to be improved against arbitrary flooding. In this study, reservoir routing program was developed and simulated for reservoir runoff estimation using WMS hydrology model. The model simulated the variations of reservoir elevation under the condition of open or closed emergency gate. In case of closed emergency gate, water surface elevation was given as 193.15 m, and this value exceeds the dam crest height by 1.65 m. When the emergency gate is open, the increment of water surface elevation is given as 192.01 m, and this value exceeds dam crest height by 0.57 m. As an alternative plan, dam height increase can be considered for flood control under the PMP (Probable Maximum Precipitation) condition. Since the dam size is relatively small compare to the watershed area, sound protection can be expected from the latter option rather than emergency gate installation.

• 농업과학연구
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• 제50권4호
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• pp.799-808
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• 2023

Globally, abnormal climate phenomena have led to an increase in rainfall intensity, consequently causing a rise in flooding-related damages. Agricultural areas, in particular, experience significant annual losses every year due to a lack of research on flooding in these regions. This study presents a comprehensive analysis of the flood event that occurred on July 16, 2017, in the agricultural area situated in Sindaedong, Heungdeok-gu, Cheongju-si. To achieve this, the EPA (United States Environmental Protection Agency) Storm Water Management Model (SWMM) was employed to generate runoff data by rainfall information. The produced runoff data facilitated the identification of flood occurrence points, and the analysis results exhibited a strong correlation with inundation trace maps provided by the Ministry of the Interior and Safety (MOIS). The detailed output of the SWMM model enabled the extraction of time-specific runoff information at each inundation point, allowing for a detailed understanding of the inundation status in the agricultural area over different time frames. This research underscores the significance of utilizing the SWMM model to simulate inundation in agricultural areas, thereby validating the efficacy of flood alerts and risk management plans. In particular, the integration of rainfall data and the SWMM model in flood prediction methodologies is expected to enhance the formulation of preventative measures and response strategies against flood damages in agricultural areas.