• 한국건축시공학회:학술대회논문집
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• 한국건축시공학회 2015년도 춘계 학술논문 발표대회
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• pp.257-258
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• 2015

The amount of damages caused by natural hazards is consistently growing due to the unusual weather and extreme events. At the same time, property damage by natural hazards is rapidly increasing as well. Hence, we need systematic anti-disaster activities and consulting that can react to such a situation. To address these needs, we investigated and analyzed insured claim payouts from natural hazards by administrative area, and calculate the risk index utilizing GIS. According to the index, this map is identifying the areas of greatest natural hazard risk. The ranking of natural disaster vulnerability based on the risk index, and risk grades were divided into five based on the ranking. This map integrates the natural hazard losses to assist in comprehensive and effective loss prevention activities using analysis of regional loss claims from natural hazards. Moreover, this map can be as utilized as loss mitigation and prevention activities to verify the distribution of exposure and hazards.

• 국토계획
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• 제54권1호
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• pp.148-158
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• 2019

The purpose of this study is to analyze the impact of earthquake on apartment prices. Many studies have been done analyzing the relationship between natural hazards and residential property prices. Most studies have shown that natural hazards have an negative effect on residential property prices, but some studies have shown that natural hazards have an positive effect on residential property prices. These conflicting analysis result from the lack of considering natural hazard frequency at the analysis site. According to literature reviews risk avoidance tendency are already inherent in prices, thus distorting the relationship between natural hazards and prices. That is, in order to analyze the impact of natural hazards on residential property prices, analysis must be carried out in areas where there has not suffered natural hazard for a long time or where there has been no damage before. Nevertheless, previous studies analyzed areas frequently affected by natural hazards. Gyeongju has been recognized as a safe area from earthquake in the past, an 5.8 magnitude earthquake occurred in September 2016. Analysis results focusing on Gyeongju Earthquake case has shown that the earthquake has affected decrease of apartment prices in hazardous areas, and after earthquake apartment prices have risen over time.

• 한국지반공학회:학술대회논문집
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• 한국지반공학회 2008년도 추계 학술발표회
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• pp.302-311
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• 2008

There have been repetitive landslides and debris flows on natural terrain induced by intensive rainfalls which have never been experienced during the last a few decades in Korea. Frequencies and magnitudes of landslides and debris flows are steeply increased after 2000 resulting in huge damages of human beings and facilities. According to a statistical data from NEMA, the human deaths induced by landslides and slope hazards occupies 22.3% of the total human deaths by all the natural hazards in Korea during the last 30 years. Among the human deaths by landslides and slope hazards, 85% of the damages were caused by landslides and debris flows on natural hazards. Therefore, this paper summarizes important events of landslides and debris flows, their characteristics, and suggests some methods of damage mitigation.

• 한국지반공학회:학술대회논문집
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• 한국지반공학회 2009년도 춘계 학술발표회
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• pp.1053-1059
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• 2009

In this study, slope hazards mitigation methods for a natural terrain are systematically classified to survey the mitigation methods and develop a data base system. Also, field survey sheets which can be recorded the features of mitigation methods installed in the natural slope are developed. The slope hazards mitigation methods in the natural slope are classified as hillside part method and valley part method. The slope part sheet and the valley part sheet are also drawn up for field survey. As the result of the filed survey of mitigation methods about 50 points in Muju and Jangsu area, grass painting and slope covering methods are dominant in case of slopes part. In case of valley part, slit dam, concrete check dam and slope foot barrier are applied simultaneously.

• 대한토목학회논문집
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• 제43권6호
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• pp.699-708
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• 2023

원자력 발전소는 안전하게 운영될 수 있도록 설계단계에서 자연재해를 포함한 예상 가능한 모든 외부사건들이 고려되고 있다. 그러나 최근에 기후변화로 인해 설계를 초과하는 자연재해의 발생 가능성이 증가하면서 설계 당시에 예측하지 못했던 극한자연재해와 외부사건에 대해 세심한 검토가 요구되고 있다. 본 연구에서는 국내 원전 부지별 잠재적 극한자연재해를 선별하고자 하였다. 이를 위해서 원전 부지특성과 원전 부지별 외부재해로 인해 발생한 사건을 조사하고 분석하였다. 그리고 기존 문헌과 연구 자료를 조사하여 국내 원전 실정에 맞는 선별절차와 기준을 수립하였다. 본 연구에서 수립된 선별기준에 근거하여 원전 부지별로 정성적 선별을 수행하였고, 선별된 자연재해를 대상으로 정량적 선별과 현장실사를 통해 국내 원전 부지별 잠재적 극한자연재해를 선별하였다. 선별 결과, 폭우에 의한 내부침수 이외에도 강풍에 의한 풍압과 극한 공기압이 모든 부지에서 공통적인 잠재적 극한자연재해로 선별되었다. 그리고 고리부지의 경우 폭풍해일이 1순위의 잠재적 극한자연재해로 선정되었다.

• 대한토목학회논문집
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• 제33권2호
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• pp.801-810
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• 2013

본 연구는 기후변화로 인하여 심각해져가고 있는 자연재해에 보다 효율적인 대응방안을 마련하기 위한 이론적 토대를 확립하고자 도시계획분야의 지속가능성 개념을 재정립하였다. 과거 지속가능성 개념에 대한 고찰과 최근 미국 방재학계의 동향을 분석하여 마련한 새로운 지속가능개발은 기존 환경분야 주요 목표인 환경보호와 더불어 이상기후로부터 도시 사회 안전성 확보가 포함되어야 함을 인식하였다. 그리고 도시 사회 안전성 확보는 저탄소녹색도시 관련요소와의 연계 속에서 이뤄져야 함을 강조하였다. 또한 환경, 경제, 사회분야의 목표를 동시에 추구함으로써 야기되는 갈등을 인식하고 대형화된 자연재해에 효과적으로 대응하기 위하여 기존 공학 시설중심의 구조적 방재대책과 더불어 비구조적 대책의 적극적 도입 필요성을 제시하였다. 본 연구에서 제시한 이론적 틀을 바탕으로 도시계획분야의 향후 연구는 갈등 조정 중재를 위한 새로운 제도적 틀 마련과 함께 APFM(the Associated Programme on Flood Management)에서 제시한 '노출(Exposure)'과 '취약성(Vulnerability)' 요인을 바탕으로 환경보호와 안전성 확보는 물론 관련 갈등해소에 기여할 수 있는 세부 요소 목표설정, 구체적 관련 기술개발 등에 노력해야 할 것으로 판단된다.

• Smart Structures and Systems
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• 제9권1호
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• pp.1-20
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• 2012

In bridge engineering, maintenance strategies and thus budgetary demands are highly influenced by construction type and quality of design. Nowadays bridge owners and planners tend to include life-cycle cost analyses in their decision processes regarding the overall design trying to optimize structural reliability and durability within financial constraints. Smart permanent and short term monitoring can reduce the associated risk of new design concepts by observing the performance of structural components during prescribed time periods. The objectives of this paper are the discussion and analysis of influence line or influence field approaches in terms of (a) an efficient incorporation of monitoring information in the structural performance assessment, (b) an efficient characterization of performance indicators for the assessment of structures, (c) the ability of optimizing the positions of sensors of a monitoring system, and (d) the ability of checking the robustness of the monitoring systems applied to a structure. The proposed influence line- model correction approach has been applied to an integrative monitoring system that has been installed for the performance assessment of an existing three-span jointless bridge.

• 한국관개배수논문집
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• 제19권1호
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• pp.97-105
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• 2012

This study aimed to evaluate the vulnerability to different natural hazards such as flood, drought, and abnormal climate, and to classify the vulnerability patterns in Gyeongsangnam-do. The damage records and annual budgets during 2000 to 2009 were collected and were ranked for all twelve si-guns. Sancheong-gun and Hamyang-gun resulted in the most vulnerable to flood and drought damages, and Hadong-gun and Yangsan-si were most damaged from abnormal climate such as heavy snow and heavy wind. In addition, three clusters were classified by using Ward's method, and were interpreted. The results showed that the western areas of Gyeongsangnam-do might be more vulnerable to flood damage while drought might threaten the eastern si-guns.

• 한국수자원학회:학술대회논문집
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• 한국수자원학회 2023년도 학술발표회
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• pp.166-166
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• 2023

Compound hazards (CHs) are two or more extreme climate events combined which occur simultaneously in the same region at the same time. Compared to individual hazards, the combination of hazards that cause CHs can result in greater economic losses and deaths. While several extreme climate events have been recorded across Asia for the past decades, many studies have only focused on a single hazard. In this study, we assess the spatiotemporal pattern of dry compound hazards which includes drought, heatwave, fire and wind across Asia for the last 42 years (1980-2021) using the historical data from ERA5 Reanalysis dataset. We utilize a daily spatial data of each climate event to assess the occurrence of such compound hazards on a daily basis. Heatwave, fire and wind hazard occurrences are analyzed using daily percentile-based thresholds while a pre-defined threshold for SPI is applied for drought occurrence. Then, the occurrence of each type of compound hazard is taken from overlapping the map of daily occurrences of a single hazard. Lastly, a multivariate assessment are conducted to quantify the occurrence frequency, hotspots and trends of each type of compound hazard across Asia. By conducting a multivariate analysis of the occurrence of these compound hazards, we identify the relationships and interactions in dry compound hazards including droughts, heatwaves, fires, and winds, ultimately leading to better-informed decisions and strategies in the natural risk management.

• 한국산학기술학회논문지
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• 제13권9호
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• pp.4319-4325
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• 2012

국내의 자연재해 관련 연구들은 토지이용관리를 통한 비구조적 접근이 재해저감에 있어 효과적인 수단임을 언급하고 있으나, 분석과정에서 토지이용과 관련된 미시적 접근은 극히 제한적으로 이루어져 왔다. 이와 같은 맥락에서 본 연구는 공간상에 상이한 형태로 분포하는 토지이용특성들이 자연재해에 따른 피해액에 미치는 영향을 규명한다. 실증분석의 결과를 살펴보면, 불투수지역 면적, 공업지역 면적, 나지면적, 하천면적 등은 자연재해 피해액에 유의한 정(+)의 영향을 미치는 것으로 나타났으나, 제방시설의 면적은 자연재해 피해액과 강한 부(-)의 상관성을 가지는 것으로 나타났다. 이와 같은 결과에 기초하여 본 연구에서는 토지이용측면에서의 효율적인 자연재해 저감방안을 제시한다.