• 한국방재학회:학술대회논문집
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• 한국방재학회 2010년도 정기 학술발표대회
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• pp.54.1-54.1
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• 2010

현재 4대강 사업이 진행중인 금강 상류는 금남보, 금강보, 부여보의 설치 및 하도준설 등 저수량 증대와 기후변화 대비로 홍수방어구조물의 설계빈도를 200년 빈도로 계획하고 있으나, 금강하류에 위치한 금강하구둑의 설계빈도는 100년 빈도로 설계된 실정으로 금강하구둑의 설계빈도의 재설정이 요구된다. 본 연구는 금강하구둑의 홍수위 검토를 위하여 최근 강우사상이 고려된 금강수계하천기본계획 (2009)의 빈도별 홍수량을 HEC-RAS 모형에 적용하여 금강하구둑의 빈도별 홍수위를 검토하였다. 금강하구둑 배수갑문의 빈도별 홍수위 검토결과 100년 빈도 및 200년 빈도에 대하여 기준여유고 1.5m를 만족하지 못하였으며, 기준 여유고 확보대안으로 배수갑문 증설방안과 배수갑문 문비확장방안을 비교 검토한 결과 1.17m의 문비확장을 통하여 기준 여유고 1.5m를 만족하는 것으로 검토되었다. 이로 인해 금강하구둑은 200년 빈도 홍수위에도 안전할 것으로 기대된다.

• 한국방재학회:학술대회논문집
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• 한국방재학회 2010년도 정기 학술발표대회
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• pp.59.1-59.1
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• 2010

본 연구에서는 기존 댐을 대상으로 강우 유출 모형에 의한 과거의 홍수량 산정방식과 최근의 홍수량 산정방식을 유역 규모별로 비교하여 강우량, 강우의 시간분포, 손실분석, 기저유출 및 단위도의 매개변수 등을 변수로 홍수량 규모에 미치는 영향을 분석하였다. 분석결과 최근 계측자료를 활용하여 홍수량을 산정하는 방법이 과거의 경험식에 의한 방법과 차이를 보여 홍수량이 큰 폭으로 증가하였는데, 홍수량이 증가한 가장 큰 원인은 최근의 기상이변에 의한 강수량의 증가와 단위도의 매개변수 추정방법이 가장 큰 원인으로 분석되었다.

• 한국방재학회:학술대회논문집
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• 한국방재학회 2010년도 정기 학술발표대회
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• pp.51.1-51.1
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• 2010

본 논문은 중소 도시하천을 위한 수해관리시스템 개발에 관한 것이다. 일반적으로 도시하천은 집중호우 발생 시 수위가 급격히 상승하는 특성이 있으므로 하천 재난관리 측면에 있어서 특별한 주의가 필요하다. 따라서 이와 같은 하천의 경우에는 강우와 유출 관계식으로부터 수립된 수문학적 모형을 사용하여 홍수 발생 여부를 예측하는 것 보다는 하천 수위의 실시간 변동 상황을 즉시 감지하고 위험상황 발생 시 이를 신속히 전파하는 것이 재난관리 측면에 있어 더욱 유리할 수 있다. 본 연구에서는 이를 위하여 실시간 센서 데이터를 보다 효율적으로 처리할 수 있는 복합 이벤트 처리기법을 사용하여 수해관리시스템을 개발하였다. 또한, 외부의 재난관리시스템과 정보를 공유하며 연동을 원활히 수행할 수 있으며 경보를 다수의 사용자에게 효과적으로 전파할 수 있는 이벤트 주도적 아키텍처를 적용하였다. 본 연구를 통해서 최근 실시간 데이터 처리기법으로 주목을 받고 있는 복합 이벤트 처리기법이 수해관리에 효과적임을 알 수 있었으며 타 분야의 재난관리에도 널리 적용될 수 있는 것으로 파악되었다.

• 대한안전경영과학회지
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• 제13권1호
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• pp.1-9
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• 2011

It is a significant issue for several country including Korea, where the natural and the weather conditions are severe, to keep the safety against disasters which occur frequently every year, especially in urban region crowded with population. In order to implement suitable and effective measures against various disasters in such area, development of method for evaluation of disaster prevention performance based on various disaster risks and effective disaster damage mitigation technologies is independable. In this paper, methods for hazard evaluation, vulnerability evaluation and loss evaluation, and damage technologies are proposed targetting man-made disaster and natural one like flood, earthquake and tsunami and so on. The method proposed in this paper is based on the research of USA and Japan for man-made disaster and natural disaster. The proposed method will be developed in detail in four years during research period funded by government.

• 한국철도학회:학술대회논문집
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• 한국철도학회 2006년도 추계학술대회 논문집
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• pp.392-401
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• 2006

In the July of 2006, devastating rainfalls ravaged the terrain in the province of Kangwon. These rainfalls resulted in debris flows, landslide and overflow over the habitat. Following these events, the urgent field study and countermeasures were to be needed and several methods were indicated. At each site, field observations were made and the properties of the channel and debris flow were broadly characterized. Debris flows are a natural hazard which looks like a combination of flood, land and rock slide. The same goes for that case, debris flow has been reported frequently overseas and the extent of damages has been increased. But the hazards "debris flow" is still insufficiently researched and futhermore debris flows are very hard to predict. In this paper, the general overview of the debris flow problem and the mitigation method will be presented

• 한국방재학회:학술대회논문집
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• 한국방재학회 2008년도 정기총회 및 학술발표대회
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• pp.59-62
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• 2008

Scour vulnerability evaluation for shallow foundations was performed to assure bridge safety against scour in the national capital region. The case studies for 26 shallow foundations consisted of site investigation including boring test, bridge scour analysis for the design flood, bearing capacity evaluation of the bridge foundation before and after scour, and comprehensive evaluation of bridge scour vulnerability. Bridge scour vulnerability was determined based on the interdisciplinary concept considering predicted scour depth for the design floods and bearing capacity of foundation as well as dimensions of foundation. Nine of 26 shallow foundations showed the potential future vulnerability to scour with significant decrease in the bearing capacity of foundations due to scour and the remaining 17 were expected to maintain their stability against scour.

• 한국방재학회:학술대회논문집
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• 한국방재학회 2008년도 정기총회 및 학술발표대회
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• pp.605-608
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• 2008

Storm and flood damage management systems in national disaster management system(NDMS) were organized into three operation systems. They are prevention, preparation, response, and recovery systems. Disaster resources in each system must be promptly and exactly applied to minimize casualties and loss of properties. However, the disaster resources in current management system can not be immediately used in calamity situation due to the lack of efficiency in statistical data. Therefore, it is necessary to classify the emergency restoration equipment for efficient management and mobilization of disaster resources in disaster situation. In this study, field survey was executed to appropriately classify the emergency restoration equipment. Problems and reformation points of the disaster resources system were also presented to improve the classification technique and to construct the data base.

• 한국방재학회:학술대회논문집
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• 한국방재학회 2008년도 정기총회 및 학술발표대회
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• pp.401-404
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• 2008

The vegetation in the surrounding area of river is a primary factor to increase water level during flood. The influence of vegetation on the river flow in a bank has been investigated by using a hydraulic experiment. For a hydraulic experiment square-shaped piers are used as a model of unsubmerged rigid vegetation in a open channel. For fully developed uniform flows, the water elevation of the experiment was measured as varying the interval of piers and the porosity which presents the fraction of water flowing area in the cross-sectional area. The Manning's roughness coefficient, which implicates energy losses due to the vegetation, was obtained by using the experimental data. As a result, the energy losses were varied when the distance of piers and the porosity of area were changed, and the Manning's coefficient increased nonlinearly when a water elevation increased.

• 한국방재학회:학술대회논문집
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• 한국방재학회 2008년도 정기총회 및 학술발표대회
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• pp.549-552
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• 2008

In this study, we deployed the cable tunnel inspection and monitoring system by wireless sensor network. It is shown that the wireless sensor network which is composed of sensor, wireless communication module, and gateway can be applied to cable tunnel monitoring system. Sensors considered herein are flame detection sensor, flood detection sensor, intruder detection sensor, and temperature sensor, etc. It is also found that the wireless sensor network can deliver sensing data reliably by wireless sensing technology. The gateway system that can transmit sensed data to server by CDMA is developed. Monitoring system is constructed by web service technology, and it is observed that this system can monitor the present state of tunnel without difficulties. The system provides an alternative to inspecting and monitoring the tunnel efficiently where the conventional wired system is infeasible.

• 한국방재학회:학술대회논문집
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• 한국방재학회 2008년도 정기총회 및 학술발표대회
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• pp.683-686
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• 2008

Flood damage has been increased due to the abnormal climate and extreme rainfall. So, quantitative and qualitative hydrologic data should be improved in oder to enhance accuracy of hydrologic forecast. However, research regarding hydrologic data have not been thorough enough. Therefore, in this study, monte carlo simulation was applied to rainfall runoff model to improve the reliability of runoff analysis and risk analysis. Rainfall-Stage-Discharge curve was developed as a consequence of MCS and it is possible to get correct rating curve for high water level.