• 제목/요약/키워드: Disaster Countermeasure

검색결과 134건 처리시간 0.028초

저수지 추적을 통한 사이펀 여수로의 홍수조절 효과 분석 (Analysis on Flood Control Effect of Siphon Spillway by Reservoir Routing)

  • 고수현;김재영;이기하
    • 한국지반환경공학회 논문집
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    • 제14권11호
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    • pp.55-63
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    • 2013
  • 농업용 저수지의 경우, 인위적인 홍수조절 기능이 없어 홍수 발생 시 급격한 저수지 수위상승에 따른 월류로 인해 제체의 파괴위험이 높고, 예 경보 없이 상류에서 유입되는 홍수량을 그대로 방류하여 하류 지역에 농경지 침수 등 홍수피해가 발생할 위험성이 높다. 본 연구에서는 경상북도 상주시에 위치한 지평저수지를 대상으로 수문분석을 실시하여 설계홍수량(200년 빈도의 1.2배)을 산정하고, 저수지 추적기법을 통해 기존 여수로와 사이펀 여수로 설치에 따른 저수지 홍수조절능력을 비교 분석하여 사이펀 여수로의 홍수조절 효과를 분석하였다. 그 결과, 지평저수지의 설계홍수량은 $284.3m^3/s$, 로 산정되었으며, 사이펀 여수로의 사전방류를 통해 수위가 약 40cm 정도 하강하고 방류량은 $91m^3/s$, 정도 감소하는 것으로 분석되었다.

사면활동으로 야기된 도로부 융기발생에 대한 수치해석 및 고찰 (Numerical simulation and countermeasure on upheaval generation in the road caused by sliding of a slope)

  • 김승희;이종현;구호본
    • 한국지반공학회:학술대회논문집
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    • 한국지반공학회 2008년도 춘계 학술발표회 초청강연 및 논문집
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    • pp.833-841
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    • 2008
  • Recently, the upheaval generation in the road which is under service had been reported. Due to the upheaval generation, total 4 lanes were forced to curtail to 3 lanes, and traffic was delayed. In normal situation of cut-slopes in korea, that condition is hard to detect since most cut-slopes contain discontinuous material, that is rock. Common collapses in rock-slopes is wedge failure, plane failure and toppling failure which is all individual mechanism of discontinuous rock mass. In contrast, such upheaval in the road in front of cut-slope can be generated only when circular movement is triggered within the cut-slope. In this sense, rock-slopes barely show any kind of movement in the road locates at the front of them. Numerical analysis is general method in simulation of slope displacement and evaluation of safety. However, numerical analysis programs which are related with rock-slopes are not able to simulate such upheaval movement because that programs are based on discontinuous modeling mechanism. In addition, although numerical analysis programs which are based on FEM/FDM and thus utilize continuous modeling mechanism are able to simulate circular movement and upheaval situation, they have weakness in reflecting discontinuities of rock-slope itself. In this study, detailed in-site investigation and numerical analysis based on in-site condition were performed in order to expect upheaval movement in the road. In this procedure, the FLAC program which uses continuous modeling method was utilized, and new approach reflecting discontinuity developed toward the road with a ubiquitous joint model was tried to derive reliable analysis result.

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수리실험을 이용한 지하유입시설 유입구 형상에 따른 수리학적 특성 분석 (Study of Hydraulic Characteristics with the Shape of the Intake of an Underground Inflow Facility using Hydraulic Experiments)

  • 성호제;박인환;이동섭
    • 한국안전학회지
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    • 제33권4호
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    • pp.119-126
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    • 2018
  • In recent years, as flood damage caused by heavy rains increased, the great-depth tunnel using urban underground space is emerging as a countermeasure of urban inundation. The great-depth tunnel is used to reduce urban inundation by using the underground space. The drainage efficiency of great-depth tunnel depends on the intake design, which leads to increase discharge into the underground space. The spiral intake and the tangential intake are commonly used for the inlet facility. The spiral intake creates a vortex flow along the drop shaft and reduces an energy of the flow by the wall friction. In the tangential intake, flow simply falls down into the drop shaft, and the design is simple to construct compared to the spiral intake. In the case of the spiral intake, the water level at the drop shaft entrance is risen due to the chocking induced by the flowrate increase. The drainage efficiency of the tangential intake decreases because the flow is not sufficiently accelerated under low flow conditions. Therefore, to compensate disadvantages of the previously suggested intake design, the multi-stage intake was developed which can stably withdraw water even under a low flow rate below the design flow rate. The hydraulic characteristics in the multi-stage intake were analyzed by changing the flow rate to compare the drainage performance according to the intake design. From the measurements, the drainage efficiency was improved in both the low and high flow rate conditions when the multi-stage inlet was employed.

서울지역 지진 재해 위험도 평가 (Assessment of Earthquake Disaster Risk in Seoul Metropolitan Area)

  • 이창수
    • 한국방재학회 논문집
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    • 제5권4호
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    • pp.71-78
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    • 2005
  • 우리나라 도로교설계기준(2005)에서 규정하고 있는 내진설계의 기본개념은 인명피해를 최소화하고 설계지진은 구조물 수명동안 발생할 확률이 거의 없다는 것이다. 구조물 내진설계의 가장 상위개념이며 합리적인 내진대책은 인명피해를 최소화해야하며 경제성이 있어야 한다. 결과적으로 최우선의 목표를 만족시키기 위해서는 개별적인 구조물 중심이 아닌 도시 전체를 대상으로 한 거시적인 평가방안이 필요하다. 도시지역에 대한 피해상황은 기타지역과 다른 양상을 나타내며, 도시가 거대해질수록 구조물의 파손에 의한 손실보다는 오히려 이에 수반되는 부가적인 손실이 월등히 클 것이다. 그리고 거시적인 지진재해 평가방법은 인구와 구조물이 밀집되고, 정치 경제활동 등의 중심이 되는 오래된 도시일수록 효과가 탁월할 것이다. 본 연구는 지진재해위험을 합리적으로 예측할 수 있는 지진재해위험지수를 개발하고, 서울특별시를 6개 구역으로 분할하여 상대적인 지진재해위험을 평가하였다.

제주도 119구조·구급대의 활성화 및 전문화 방안 (A Study on the Activation·Specification of 119 Rescue & Care in JeJu)

  • 고재문;김태민;김효식;이영아
    • 한국응급구조학회지
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    • 제6권1호
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    • pp.153-168
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    • 2002
  • Since 1992, conventional fire fighting businesses have been converted into a metropolitan autonomous fire fighting system to be ready for a variety of disasters. However, the corresponding investment has been overlapped due to the non-integration of businesses to prevent any potential disasters, and a series of collaborative systems have been not functioning so well. In the meantime, our fire fighting sector has been trying to set up its own clean and faithful position by abolishing any inconvenient system or outsourcing private sectors, and expanded its work scope from conventional fire fighting even to rescue and emergency works. While focusing on handling disaster, the fire fighting sector has been widely trusted and reliable throughtout our nation. Moreover, our fire fighting sector has secured nation wide mobile organizations, technical personnel by field, special equipments and independent communication network. In addition, the fire fighting sector has knowledges, expertise and capabilities required for managing disasters, while in charge of almost every disaster management works including fire, explosion, collapse, disaster and flood. It becomes an organization for comprehensive disaster management under an absolute national trust, which is based on the system for prevention, preparation and countermeasure against a variety of disasters. Thus, our fire fighting sector must make many efforts and try to modernize conventional education and training. The ways to facilitate rescue and emergency works may include the nurture of technical fire fighting personnel along with modernized equipments, the reinforcement of rescue and emergency education, the facilitation of operating civil defense corps, the facilitation of operating volunteer fire fighting corps, the better arrangement of 119 briefing room for public healthcare in provincial offices, the sterilization of rescue instruments and equipments the better repair education for emergency rescue member, the establishment of regional emergency assistant system and the expansion of fire fighting personnel and equipments. In terms of reinforcing the functions and services of rescue 119 and emergency corps, we must review the following considerations: Building up security system along with operational expansion, building up a system for emergency medical treatment, building up a comprehensive information management system for rescue and emergency, constructing a provincial safety museum and so forth. For the ways to better the works of rescue 119 we can review the following considerations : Improving the education for fire fighting training corps under Jeju Provincial Fire and Disaster Management Department, providing rescue members with more opportunities for clinical practices, enhancing the morale of rescue members, installing a comprehensive briefing room for emergency rescue members, building up medical networks along with reasonable policies for information service, operating the consulting system for rescue 119 and so on. If these requirements are met, it is expected that the fire fighting departments in Jeju province can cope with every accident and disaster a little more rapidly and quickly in compliance with local needs, so that they can keep their own position as a public fire fighting organization which may be trusted by the public.

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수치해석에 의한 노후저수지의 침투 및 동적거동 (Behavior of Seepage and Seismic for the Deterioration Reservoir Using Numerical Analysis)

  • 박성용;장석현;임현택;김정면;김용성
    • 한국농공학회논문집
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    • 제58권3호
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    • pp.81-90
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    • 2016
  • It is significant to redevelop the deterioration reservoir through raising for countermeasure to climate change and Earthquake improvement of reservoir. This study aims to investigate the behavior of deterioration reservoir with poor-fabricated core subjected to raising water level and earthquake using numerical analysis. From the analysis results, water level raising and earthquakes induce crack and subsidences at the crown and the front side of deterioration reservoir. For the reinforcement of the deterioration reservoir is required appropriate measures method and raised method suitable, drainage and slope protection method judged to be necessary.

건설안전시스템 향상을 위한 안전컨설팅 연구 (A Study on the Safety Consulting for improving the Construction Safety System)

  • 조재환;윤준선;한광일
    • 대한안전경영과학회지
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    • 제15권4호
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    • pp.49-53
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    • 2013
  • If industrial safety statistics are analyzed, among the total of 2,114 dead people from industrial disasters in 2011, construction workers took 29.4% with 621. The construction industry makes a lot of efforts to reduce the death toll. However, since the measures are not from the analysis of root causes but from superficial countermeasure plans near general matters, it is in a situation that the actual effectiveness is marginal. Therefore, in this paper, improvement measures were intended to be prepared in order to reduce accidents, by inspecting safety control systems of target companies with high accident rates among major construction firms and extracting overall problems of them.

해양 사고와 방지 대책 (The Marine Casualty and Countermeasure for Prevention)

  • 강영승
    • 기술사
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    • 제41권5호
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    • pp.41-44
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    • 2008
  • 해상을 운항하는 선박들은 충돌, 좌초, 침몰, 전복 및 조난 등의 위험에 노출되어 있으므로항행 중에 발생할 수 있는 여러 가지 해양사고의 요인을 살펴보고 방지 대책을 생각해 보았다. 일단 해상에서 사고가 발생할 경우 신속하고 효율적인 구조를 위해 유관기관 사이에 일원화된 지휘체계가 필요하다. 또한 해양사고의예방을 위해서는 선원들에 대한 안전교육을 강화하고 안전한 항행을 위한 항행여건을 개선하는 것이 중요하다.

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전력계통 제어를 위한 변전소 AC/DC 겸용 비상전원에 관한 연구 (A study of AC/DC combined emergency source for power system control)

  • 전범배;이형한;김창곤;안보순;윤기섭;정종기
    • 대한전기학회:학술대회논문집
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    • 대한전기학회 2005년도 추계학술대회 논문집 전력기술부문
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    • pp.135-138
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    • 2005
  • This paper focuses on emergency source and control of substation against the consequence of power system breakdown or outage. the aim of the paper is to provide ideas and guidance concerning methods of using AC/DC combined emergency source for power system control to restore power system after unforseen events, such as outages caused by natural disaster. so the emergency source and lamp is very important for restoration control of substation after outage. therefore, this paper proposes countermeasure and method for security of substation emergency source and lamp which is restored at breakdown.

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이상홍수 취약성 평가 시스템의 개발 (Development of Flood Vulnerability Index Estimation System)

  • 장대원;김병식;김보경;양동민;서병하
    • 한국수자원학회:학술대회논문집
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    • 한국수자원학회 2008년도 학술발표회 논문집
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    • pp.410-413
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    • 2008
  • We constructed the regional flood risk and damage magnitude using hazard and vulnerabilities which are climatic, hydrological, socio-economic, countermeasure, disaster probability components for DB construction on the GIS system. Also we developed the Excess Flood Vulnerability index estimation System(EFVS). By the construction of the System, we can perform the scientific flood management for the flood prevention and optional extreme flood defenses according to regional characteristics. In order to evaluate the performance of system, we applied EFVS to Anseong-chen in Korea, and the system's stabilization is appropriate to flood damage analysis.

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