• Title/Summary/Keyword: Disaster resources

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Development of a integrated platform for urban river management (도시하천관리를 위한 연계플랫폼 개발)

  • Koo, Bonhyun;Oh, Seunguk;Koo, Jaseob;Shim, Kyucheoul
    • Journal of Korea Water Resources Association
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    • v.55 no.6
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    • pp.471-480
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    • 2022
  • In this study, a integrated platform applied with various analysis and evaluation models and data collection modules was developed for urban river management. Modules applied to the integrated platform are data collection and provision module, flood analysis module, river evaluation module, and levee breach simulation module, which were selected and applied for efficient urban river management. The integrated platform collects data for application to analysis and evaluation modules from various institutions. The collected data is refined through pre-processing and stored. The stored data is used as input data for each module and is also provided as an Open API through the platform. The flood analysis module is provided to analyze and prepare for floods occurring in cities and rivers. The river evaluation module is used for river planning and management by evaluating rivers in various ways. Finally, the levee breach simulation module can be used to establish countermeasures by deriving a possible damage area due to levee breach through analysis of a virtual breach situation.

Review of Changes in Mechanical Properties of Concrete According to Recycled Coarse Aggregate Replacement Rate_Case Study (순환 굵은 골재 치환율에 따른 콘크리트의 역학적 특성 변화 검토_사례 연구)

  • Young-Jin Nam;Tae-Hyung Kim;Won-Chang Kim;Tae-Gyu Lee
    • Journal of the Korean Recycled Construction Resources Institute
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    • v.12 no.2
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    • pp.178-187
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    • 2024
  • In this study, it was determined that it was necessary to consider the replacement rate when applying recycled coarse aggregate to concrete, so data on existing research trends and results were collected and the mechanical properties of concrete according to the replacement rate of recycled coarse aggregate were analyzed. In collecting data on recycled coarse aggregate, data without processes such as compressive strength and removal of residual mortar attached to recycled coarse aggregate were collected among the concrete measurement items. In the case of concrete with 50 % and 100 % replacement of recycled coarse aggregate, it was confirmed that the mechanical properties were lower or higher than ordinary concrete by -36.0 ~ 9.9 % and -40.0 ~ 10.4 %, respectively, on average. Accordingly, it is judged that additional water should be mixed in consideration of the absorption rate when mixing, and the replacement rate of recycled coarse aggregate, which has mechanical properties of 80 % or more compared to ordinary concrete, should be less than 50 %.

A Study on Safety Policies Toward Aging Society (고령화사회를 대비한 소방방재정책에 관한 연구)

  • Lee Eui-Pyeong
    • Fire Science and Engineering
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    • v.19 no.1 s.57
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    • pp.29-45
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    • 2005
  • Korean society became an 'aging society' in 2000 years with a population of 65 years and over occupying $7.2\%$ of the whole population. And we expect that a population of 65 years and over will occupy $14.4\%$ in 2019 years, so Korean society will enter into an 'aged society' Older adults can't react correctly and rapidly to the disaster due to the decline of the physical function, therefore victims of older adults due to the disaster will increase as much as aging proceeds. For reducing sacrifices of older adults due to the disaster, 1 suggest that the propulsion of the disaster service policy for disaster week people like older adults, the policy of minimizing casualties due to fires, reinforcement of fire resources and enlargement of disaster services in rural communities, offering information about disaster services and reinforcement of functions of public relations, making new connection systems (e.g. educating welfare and post officials as volunteer fire officials), supplement of fire fighters, and the policy of lightening fire equipments.

Common Business Analysis of Disaster and Safety Response Processes Based on Crisis Management SOP Manuals for Development of BRM (재난안전 분야 기능분류체계(BRM) 개발을 위한 위기관리 표준매뉴얼(SOP) 기반 공통업무 분석)

  • Gang, Ju-yeon;Han, Hui-jeong;Myung, Hyun;Oh, Hyo-jung
    • The Korean Journal of Archival Studies
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    • no.58
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    • pp.191-224
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    • 2018
  • In order to effectively respond to repeated disasters, the most important thing is the systematic management of records which were produced from past disaster response processes. It is necessary to develope a business reference model(BRM) to incorporate scattered disaster safety record information resources into the record management system. In this regard, this study examined crisis management standard operation procedures(SOP) manuals and analyzed common businesses of disaster and safety response processes. Based on analysis of 28 manuals three times, 1,667 main business transactions are drawn, which are grouped by 5 middle functions and 20 small functions. Furthermore, by looking at forecast records by business type, several insight is proposed in terms of disaster and safety response business processes and of disaster and safety records management.

Potential damage assessment of inland wetlands by topsoil erosion (표토침식에 따른 내륙습지 훼손 가능성 평가)

  • Kim, Seongwon;Jeong, Anchul;Lee, Daeeop;Lee, Giha
    • Journal of Korea Water Resources Association
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    • v.53 no.7
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    • pp.521-531
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    • 2020
  • The purpose of this study is to suggest a quantitative assessment of wetland damage considering the effects of topsoil erosion and deposition from rainfall. In the Cheoncheon Basin located upstream of the Yongdam Dam, 16 wetlands are located, but the lacustrine and small palustrine wetland were analyzed for possible damage to erosion and deposition. As a result of applying typhoon events in 2002 and 2003, the sediment load from the upper basin was the highest at 2.30% (22,548 ㎥) of low water capacity. The average sediment load in the mountain areas was found to be 0.03% of the low water capacity, and it was analyzed to be less damaging than the lacustrine with relatively large watershed. as a result of the model, the lacustrine wetland, where a large area is used as agricultural land, shows a high probability of sediment yield, so it is highly likely to damage the wetland by topsoil erosion.

Integrated Application Strategies for Natural Disaster Information (자연재해정보의 통합적 활용방안 연구)

  • Yeon, Young-Kwang;Han, Jong-Gyu;Chi, Kwang-Hoon;Ryu, Kun-Ho
    • Economic and Environmental Geology
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    • v.40 no.6
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    • pp.785-795
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    • 2007
  • Recently, the knowledge and use of information production and service in integrated information has been changing from intra-organizational to inter-organizational and even international. In particular, since natural disasters are complexly related, it is increasingly important to use integrated information from related areas in the reduction and prevention of such events. In this study, we suggest strategies for the use of integrated information from natural disasters based on that expanding need. This study analyzes information user surveys, the interrelated information technologies, trends, and case studies to determine user access to the information, the status of the information used, and the supply and distribution of that information. From the survey results, we can draw conclusions about the effectiveness of the strategies of integrated information used in domestic natural disaster information.

Temporal and Spatial Variations of Sinking-particle Fluxes in the Northwestern Subtropical Pacific (북서태평양 아열대 해역에서 침강입자 플럭스의 시·공간 변동)

  • Kim, Hyung-Jeek;Hyeong, Ki-Seong;Yoo, Chan-Min;Jeon, Dong-Chull;Jeong, Jin-Hyun;Khim, Boo-Keun;Kim, Dong-Seon
    • Ocean and Polar Research
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    • v.33 no.spc3
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    • pp.385-395
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    • 2011
  • Time-series sediment traps were deployed at 1,000 m water depth of the northwestern subtropical Pacific from July 2009 to June 2010, with the aim of understanding temporal and spatial variations of sinking-particle fluxes. The opening and closing of the traps was synchronized at 18-day periods for 20 events. Total mass fluxes showed distinct seasonal variations with high values for the summer-fall seasons and relatively low values for winter-spring. This seasonal variation at two stations was characterized by a distinct difference in $CaCO_3$ fluxes between the two seasons. The enhanced $CaCO_3$ flux in the summer - fall seasons might be attributed to an increased planktonic foraminiferal flux. Total mass flux at FM10 station was nearly 50% higher than that at FM1 station. The difference in $CaCO_3$ fluxes between two stations contributed nearly 70% of the difference of total mass fluxes. The $CaCO_3$ flux was a major component controlling temporal and spatial variation of sinking - particle fluxes in the western subtropical Pacific Ocean.

Effect of Extreme Rainfall on Cut Slope Stability: Case Study in Yen Bai City, Viet Nam

  • Tran, The Viet;Trinh, Minh Thu;Lee, Giha;Oh, Sewook;Nguyen, Thi Hai Van
    • Journal of the Korean GEO-environmental Society
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    • v.16 no.4
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    • pp.23-32
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    • 2015
  • This paper addresses the effects of extreme rainfall on the stability of cut slopes in Yen Bai city, Northern Viet Nam. In this area, natural slopes are excavated to create places for infrastructures and buildings. Cut slopes are usually made without proper site investigations; the design is mostly based on experience. In recent years, many slope failures have occurred along these cuts especially in rainy seasons, resulting in properties damaged and loss of lives. To explain the reason that slope failure often happens during rainy seasons, this research analyzed the influence of extreme rainfalls, initial ground conditions, and soil permeability on the changes of pore water pressure within the typical slope, thereafter determining the impact of these changes on the slope stability factor of safety. The extreme rainfalls were selected based on all of the rainfalls triggering landslide events that have occurred over the period from 1960 to 2009. The factor of safety (FS) was calculated using Bishop's simplified method. The results show that when the maximum infiltration capacity of the slope top soil is less than the rainfall intensity, slope failures may occur 14 hours after the rain starts. And when this happens, the rainfall duration is the deciding factor that affects the slope FS values. In short, cut slopes in Yen Bai may be stable in normal conditions after the excavation, but under the influence of tropical rain storms, their stability is always questionable.

Applications of Seismic Disaster Simulation Technology on Risk Management

  • Yeh, Chin-Hsun
    • 한국방재학회:학술대회논문집
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    • 2010.02a
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    • pp.16-24
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    • 2010
  • This paper introduces the applications of Taiwan Earthquake Loss Estimation System (TELES), which is developed by the National Center for Research on Earthquake Engineering (NCREE). Seismic disaster simulation technology (SDST) integrates geographical information system to assess the distribution of ground shaking intensity, ground failure probability, building damages, casualties, post-quake fires, debris, lifeline interruptions, economic losses, etc. given any set of seismic source parameters. The SDST may integrate with Taiwan Rapid Earthquake Information Release System (TREIRS) developed by Central Weather Bureau (CWB) to obtain valuable information soon after large earthquakes and to assist in decision-making processes to dispatch rescue and medical resources more efficiently. The SDST may also integrate with probabilistic seismic source model to evaluate various kinds of risk estimates, such as average annual loss, probable maximum loss in one event, and exceeding probability curves of various kinds of losses, to help proposing feasible countermeasures and risk management strategies.

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The Efficient ICT Devices Utilization Method using Disaster Security Communication Network (재난안전통신망을 이용한 효율적인 ICT 기기 활용 방안)

  • Hong, Sung-Hwa;Lee, Seong-Real
    • Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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    • 2018.10a
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    • pp.474-476
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    • 2018
  • Natural disasters destroy decades of human effort and investments, thereby placing new demands on society for reconstruction and rehabilitation. In most case, the natural phenomena triggering the disasters are beyond human control. In order to solve the problems that the information resources can not be shared among disaster management sectors and their work is hard to be coordinated in city, an idea of application of ubiquitous sense network and ICT technology to model the architecture of the disaster prevention system based on the analysis of characteristics of disasters.

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