Pub Date : 2023-02-28DOI: 10.9798/kosham.2023.23.1.133
Joo-Seong Lee, Bohyeok Lim, Hae-Dong Lee
In this study, we aim to improve the fire resistance performance by solving the structural problem so that gas or flame does not leak through the door in case of a fire while maintaining airtightness and insulation when removing the threshold at the bottom of a general fire door. To improve airtightness and insulation performance along with fire-resistance, an ordinary auto-bottom is provided in the lower part of the door. However, there is a limit to securing fire-resistance. To maximize fire-resistance performance, graphite, an expandable foaming agent, is applied to block the gap between the lower part of the door and floor. Additionally, gas holes at the bottom of the door induce the gas generated to flow into the door. We found that blocking the flow of gas plays a very important role in improving fire-resistance performance.
{"title":"Study on the Method of Improving the Fire Resistance Performance of No Threshold Fire Door","authors":"Joo-Seong Lee, Bohyeok Lim, Hae-Dong Lee","doi":"10.9798/kosham.2023.23.1.133","DOIUrl":"https://doi.org/10.9798/kosham.2023.23.1.133","url":null,"abstract":"In this study, we aim to improve the fire resistance performance by solving the structural problem so that gas or flame does not leak through the door in case of a fire while maintaining airtightness and insulation when removing the threshold at the bottom of a general fire door. To improve airtightness and insulation performance along with fire-resistance, an ordinary auto-bottom is provided in the lower part of the door. However, there is a limit to securing fire-resistance. To maximize fire-resistance performance, graphite, an expandable foaming agent, is applied to block the gap between the lower part of the door and floor. Additionally, gas holes at the bottom of the door induce the gas generated to flow into the door. We found that blocking the flow of gas plays a very important role in improving fire-resistance performance.","PeriodicalId":416980,"journal":{"name":"Journal of the Korean Society of Hazard Mitigation","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-02-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130955680","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-02-28DOI: 10.9798/kosham.2023.23.1.91
Pil-Jae Moon, Seo-Young Kim, Ha-sung Kong
The purpose of this study was to investigate whether workers were aware of fire alarms when sirens and bullhorn loudspeakers sound at construction sites that have many internal partitions. The experimental results revealed that when a fire alarm was activated at a construction site, workers in close proximity to the source of sound heard the alarm, whereas those far away did not. Workers at construction site may be prevented from hearing a fire alarm because of the noise generated by both, the workers and construction work. In addition, it is inferred that construction sites have many obstacles that hinder the transmission of soundwaves because they tend to have internal structure that include many partitions. Thus, it was found that complete evacuation from a construction site in the event of a fire was difficult because the sound of the fire alarm was not adequately transmitted to the entire site.
{"title":"Analysis the Cognitive Ability of Workers to Hear Fire Alarms Construction Sites","authors":"Pil-Jae Moon, Seo-Young Kim, Ha-sung Kong","doi":"10.9798/kosham.2023.23.1.91","DOIUrl":"https://doi.org/10.9798/kosham.2023.23.1.91","url":null,"abstract":"The purpose of this study was to investigate whether workers were aware of fire alarms when sirens and bullhorn loudspeakers sound at construction sites that have many internal partitions. The experimental results revealed that when a fire alarm was activated at a construction site, workers in close proximity to the source of sound heard the alarm, whereas those far away did not. Workers at construction site may be prevented from hearing a fire alarm because of the noise generated by both, the workers and construction work. In addition, it is inferred that construction sites have many obstacles that hinder the transmission of soundwaves because they tend to have internal structure that include many partitions. Thus, it was found that complete evacuation from a construction site in the event of a fire was difficult because the sound of the fire alarm was not adequately transmitted to the entire site.","PeriodicalId":416980,"journal":{"name":"Journal of the Korean Society of Hazard Mitigation","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-02-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132778678","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-02-28DOI: 10.9798/kosham.2023.23.1.37
J. Joo, Jungmin Lee, Moojong Park
Reducing carbon emissions due to climate change has emerged as a national objective. To achieve carbon-free emissions nationally by 2050, evaluating and reducing carbon emissions is essential for efficient disaster management. In this study, a method for quantitatively evaluating carbon emissions in disaster management projects was proposed. Disaster management projects were divided into detailed processes, and in each process, the extent of equipment operation and amount of raw material used for unit construction work were presented using standard production of construction work. The carbon emissions resulting from equipment operation and material usage were based on the standards given by the Ministry of Land, Infrastructure, and Transport. Finnally, amount of carbon emissions for unit construction volume during each detailed process were estimated. Using developed methods, carbon emissions were calculated at the steep slope maintenance project. The results indicated that 89.4% of the total carbon emissions were generated from pouring concrete, such as cement and ready-mixed concrete. Thus, reduction of cement and concrete usage is essential for reducing carbon emissions in disaster management projects.
{"title":"Evaluation of Carbon Emissions According to the Steep Slope Maintenance Project","authors":"J. Joo, Jungmin Lee, Moojong Park","doi":"10.9798/kosham.2023.23.1.37","DOIUrl":"https://doi.org/10.9798/kosham.2023.23.1.37","url":null,"abstract":"Reducing carbon emissions due to climate change has emerged as a national objective. To achieve carbon-free emissions nationally by 2050, evaluating and reducing carbon emissions is essential for efficient disaster management. In this study, a method for quantitatively evaluating carbon emissions in disaster management projects was proposed. Disaster management projects were divided into detailed processes, and in each process, the extent of equipment operation and amount of raw material used for unit construction work were presented using standard production of construction work. The carbon emissions resulting from equipment operation and material usage were based on the standards given by the Ministry of Land, Infrastructure, and Transport. Finnally, amount of carbon emissions for unit construction volume during each detailed process were estimated. Using developed methods, carbon emissions were calculated at the steep slope maintenance project. The results indicated that 89.4% of the total carbon emissions were generated from pouring concrete, such as cement and ready-mixed concrete. Thus, reduction of cement and concrete usage is essential for reducing carbon emissions in disaster management projects.","PeriodicalId":416980,"journal":{"name":"Journal of the Korean Society of Hazard Mitigation","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-02-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127224650","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-02-28DOI: 10.9798/kosham.2023.23.1.217
Hyoyoung Choi, Junghyeon Kim, Sujin Lee, I. Byun
This study applied a filter press for dewatering that uses pressure to reduce the water content of sludge generated in sewage treatment plants and evaluated the improvement of dewaterability under various coagulation conditions according to the type of coagulants, amounts, and pH conditions. The improvement of dewaterability was evaluated by measurement of time to filter (TTF), change in zeta potential, and sludge cake generated after filter press dewatering. It was found that under the applied coagulation conditions, inorganic coagulants were suitable for filter press dewatering. The optimum conditions were PAC with a dose of 70 mg/gTS, pH 10 for mixed sludge, and PAC with a dose of 100 mg/gTS, pH 6 for anaerobically digested sludge. Under optimal coagulation conditions, the water content of the sludge cake was 57% and 65%, respectively, marking a reduction by 19-27% compared to conventional centrifuge dewatering.
{"title":"Improving the Dewaterability of a Filter Press through Optimization of the Coagulation Conditions of Sewage Sludge","authors":"Hyoyoung Choi, Junghyeon Kim, Sujin Lee, I. Byun","doi":"10.9798/kosham.2023.23.1.217","DOIUrl":"https://doi.org/10.9798/kosham.2023.23.1.217","url":null,"abstract":"This study applied a filter press for dewatering that uses pressure to reduce the water content of sludge generated in sewage treatment plants and evaluated the improvement of dewaterability under various coagulation conditions according to the type of coagulants, amounts, and pH conditions. The improvement of dewaterability was evaluated by measurement of time to filter (TTF), change in zeta potential, and sludge cake generated after filter press dewatering. It was found that under the applied coagulation conditions, inorganic coagulants were suitable for filter press dewatering. The optimum conditions were PAC with a dose of 70 mg/gTS, pH 10 for mixed sludge, and PAC with a dose of 100 mg/gTS, pH 6 for anaerobically digested sludge. Under optimal coagulation conditions, the water content of the sludge cake was 57% and 65%, respectively, marking a reduction by 19-27% compared to conventional centrifuge dewatering.","PeriodicalId":416980,"journal":{"name":"Journal of the Korean Society of Hazard Mitigation","volume":"105 3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-02-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133679202","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-02-28DOI: 10.9798/kosham.2023.23.1.99
Gyu-hwan Cho, Kisoo Jeon, J. Ahn
In petrochemical plant facilities handling highly inflammable and combustible substances, it is necessary to preferentially review the frame type (closed or open) of the facility with consideration to the various fire conditions that may arise depending on the substances being handled. Accordingly, a fire simulation was carried out in this study for different fire conditions by assuming three frame types, and the spatial temperature distribution was analyzed for each condition. Various temperature distributions were found according to the fire type, fire source, and frame type of the facility. The results showed that petrochemical plant facilities handling diverse substances need to implement fire-resistant designs appropriate for the purpose of the facility by comprehensively considering the arrangement and frame type of the facility and the fire conditions that are likely to arise.
{"title":"Analytical Study on Fire Temperature Distribution Characteristics in Petrochemical Plant Facilities","authors":"Gyu-hwan Cho, Kisoo Jeon, J. Ahn","doi":"10.9798/kosham.2023.23.1.99","DOIUrl":"https://doi.org/10.9798/kosham.2023.23.1.99","url":null,"abstract":"In petrochemical plant facilities handling highly inflammable and combustible substances, it is necessary to preferentially review the frame type (closed or open) of the facility with consideration to the various fire conditions that may arise depending on the substances being handled. Accordingly, a fire simulation was carried out in this study for different fire conditions by assuming three frame types, and the spatial temperature distribution was analyzed for each condition. Various temperature distributions were found according to the fire type, fire source, and frame type of the facility. The results showed that petrochemical plant facilities handling diverse substances need to implement fire-resistant designs appropriate for the purpose of the facility by comprehensively considering the arrangement and frame type of the facility and the fire conditions that are likely to arise.","PeriodicalId":416980,"journal":{"name":"Journal of the Korean Society of Hazard Mitigation","volume":"277 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-02-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125850892","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-02-28DOI: 10.9798/kosham.2023.23.1.191
Min-Gyu Ha, Seok-Chun Gang, C. Jang, H. Yoon, J. Ryou, Jong-Am Jung
Interest in liquefaction has increased owing to the increasing occurrence of liquefaction in the country. According to previous studies, factors that influence liquefaction include the grain size distribution, plasticity, relative density, overconsolidation ratio, and confining conditions. In this study, the liquefaction possibility was evaluated based on grain size distribution and soil plasticity. Based on the grain size distribution, a clear correlation between the liquefaction resistance of the two samples could not be identified because both samples showed similar grain size distributions. In contrast, in terms of soil plasticity, the liquefaction resistance value increased with increasing plasticity index value. These results indicate that soil plasticity has a significant effect at a similar grain size distribution.
{"title":"Evaluation of Liquefaction Possibility of Ground Based on Grain Size Distribution and Soil Plasticity","authors":"Min-Gyu Ha, Seok-Chun Gang, C. Jang, H. Yoon, J. Ryou, Jong-Am Jung","doi":"10.9798/kosham.2023.23.1.191","DOIUrl":"https://doi.org/10.9798/kosham.2023.23.1.191","url":null,"abstract":"Interest in liquefaction has increased owing to the increasing occurrence of liquefaction in the country. According to previous studies, factors that influence liquefaction include the grain size distribution, plasticity, relative density, overconsolidation ratio, and confining conditions. In this study, the liquefaction possibility was evaluated based on grain size distribution and soil plasticity. Based on the grain size distribution, a clear correlation between the liquefaction resistance of the two samples could not be identified because both samples showed similar grain size distributions. In contrast, in terms of soil plasticity, the liquefaction resistance value increased with increasing plasticity index value. These results indicate that soil plasticity has a significant effect at a similar grain size distribution.","PeriodicalId":416980,"journal":{"name":"Journal of the Korean Society of Hazard Mitigation","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-02-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127168989","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-02-28DOI: 10.9798/kosham.2023.23.1.83
Jong-Hwan Jung
After the revision of “Fire Safety Standards for Automatic Fire Alarm System and Visual Alarm Equipment (NFSC 203)” in 2015 made it mandatory to install smoke detectors in apartments and medical facilities, their number has increased significantly. The detector used in the experiment was a photoelectric spot-type analog smoke detector. The experiment was conducted by configuring a real-time smoke monitoring system. In addition, the sensitivity characteristics of the smoke detector according to the decrease in intensity of light were analyzed. This was achieved by controlling the intensity of light related to the lifespan of the LED, a vital component of the smoke detector. When a intensity of LED light decreased by 10%, the sensitivity of the smoke detector decreased by 12.5%. When a intensity of light decreased by 30%, it decreased to 61% of the smoke detector sensitivity value. From these results, An equation for the change in sensitivity of a smoke detector according to the decrease in intensity of light was derived. It was confirmed that when the light intensity of the LED decreases, the sensitivity of the smoke detector decreases by about 37% more than the decrease in light intensity. Therefore, when developing a photoelectric spot-type smoke detector, establishing the LED current-radiation light characteristic curve and the correlation between the current of the light source and the ambient temperature will significantly improve the product's function and post-management.
{"title":"Analyzing Sensitivity Characteristics according to Decrease in Intensity of Light from LED Light Source of Photoelectric Spot-Type Detector","authors":"Jong-Hwan Jung","doi":"10.9798/kosham.2023.23.1.83","DOIUrl":"https://doi.org/10.9798/kosham.2023.23.1.83","url":null,"abstract":"After the revision of “Fire Safety Standards for Automatic Fire Alarm System and Visual Alarm Equipment (NFSC 203)” in 2015 made it mandatory to install smoke detectors in apartments and medical facilities, their number has increased significantly. The detector used in the experiment was a photoelectric spot-type analog smoke detector. The experiment was conducted by configuring a real-time smoke monitoring system. In addition, the sensitivity characteristics of the smoke detector according to the decrease in intensity of light were analyzed. This was achieved by controlling the intensity of light related to the lifespan of the LED, a vital component of the smoke detector. When a intensity of LED light decreased by 10%, the sensitivity of the smoke detector decreased by 12.5%. When a intensity of light decreased by 30%, it decreased to 61% of the smoke detector sensitivity value. From these results, An equation for the change in sensitivity of a smoke detector according to the decrease in intensity of light was derived. It was confirmed that when the light intensity of the LED decreases, the sensitivity of the smoke detector decreases by about 37% more than the decrease in light intensity. Therefore, when developing a photoelectric spot-type smoke detector, establishing the LED current-radiation light characteristic curve and the correlation between the current of the light source and the ambient temperature will significantly improve the product's function and post-management.","PeriodicalId":416980,"journal":{"name":"Journal of the Korean Society of Hazard Mitigation","volume":"44 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-02-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125763649","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-02-28DOI: 10.9798/kosham.2023.23.1.61
Moon-Sook Ko, Youngju Lee
This study aims to improve the disaster insurance system by examining issues related to compulsory insurance against social disasters, legal problems, and operational cases in major overseas countries. Korea operates about 30 types of disaster insurance, but there is a lack of prior reviews when introducing disaster insurance, so disaster insurance is continuously expanded. In addition, compared to major overseas countries, the insurance contract method is uniform and the management and supervision of insurance are insufficient. Therefore, when disaster insurance is introduced, it is necessary to accompany a professional review to determine if it is sufficiently helpful to the public interest, and it is essential to strengthen the management and supervision of insurance operations. In addition, to alleviate resistance to insurance purchases without infringing on individual freedom of contract, various insurance subscription methods should be devised, and it is necessary to strengthen liability for social disasters and to encourage the purchase of disaster insurance policy.
{"title":"Problem Analysis and Improvement Plan for Compulsory Insurance System in Preparation for Social Disaster","authors":"Moon-Sook Ko, Youngju Lee","doi":"10.9798/kosham.2023.23.1.61","DOIUrl":"https://doi.org/10.9798/kosham.2023.23.1.61","url":null,"abstract":"This study aims to improve the disaster insurance system by examining issues related to compulsory insurance against social disasters, legal problems, and operational cases in major overseas countries. Korea operates about 30 types of disaster insurance, but there is a lack of prior reviews when introducing disaster insurance, so disaster insurance is continuously expanded. In addition, compared to major overseas countries, the insurance contract method is uniform and the management and supervision of insurance are insufficient. Therefore, when disaster insurance is introduced, it is necessary to accompany a professional review to determine if it is sufficiently helpful to the public interest, and it is essential to strengthen the management and supervision of insurance operations. In addition, to alleviate resistance to insurance purchases without infringing on individual freedom of contract, various insurance subscription methods should be devised, and it is necessary to strengthen liability for social disasters and to encourage the purchase of disaster insurance policy.","PeriodicalId":416980,"journal":{"name":"Journal of the Korean Society of Hazard Mitigation","volume":"117 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-02-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130774632","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-02-28DOI: 10.9798/kosham.2023.23.1.209
T. J. Kim
Impervious area increase by urbanization and flash flood by climate change lead to abrupt increase in urban stormwater, unlike in the past. Currently, street trees play a significant role in urban environmental improvement such as green space, urban heat reduction, and air pollution reduction. In addition, transpiration from leaf canopy in an urban water cycle significantly impacts the decrease in urban stormwater runoff. In this study, leaf canopy, as in earlier areas, was evaluated for the impact of decreasing urban stormwater. US Environmental Protection Agency (EPA) Storm Water Management Model (SWMM) for urban stormwater runoff, Geographic Information System (GIS) for its input extraction, and image process for calculating the leaf canopy area were utilized. The simulation results indicated that flood runoff peak based on 20 frequency of sewer facility standard and 80 frequency of local river design standard decreased by 1.08% and 1.44%, respectively.
{"title":"Evaluating the Impact of Urban Stormwater Runoff by Street Tree Canopy","authors":"T. J. Kim","doi":"10.9798/kosham.2023.23.1.209","DOIUrl":"https://doi.org/10.9798/kosham.2023.23.1.209","url":null,"abstract":"Impervious area increase by urbanization and flash flood by climate change lead to abrupt increase in urban stormwater, unlike in the past. Currently, street trees play a significant role in urban environmental improvement such as green space, urban heat reduction, and air pollution reduction. In addition, transpiration from leaf canopy in an urban water cycle significantly impacts the decrease in urban stormwater runoff. In this study, leaf canopy, as in earlier areas, was evaluated for the impact of decreasing urban stormwater. US Environmental Protection Agency (EPA) Storm Water Management Model (SWMM) for urban stormwater runoff, Geographic Information System (GIS) for its input extraction, and image process for calculating the leaf canopy area were utilized. The simulation results indicated that flood runoff peak based on 20 frequency of sewer facility standard and 80 frequency of local river design standard decreased by 1.08% and 1.44%, respectively.","PeriodicalId":416980,"journal":{"name":"Journal of the Korean Society of Hazard Mitigation","volume":"39 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-02-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134330418","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-02-28DOI: 10.9798/kosham.2023.23.1.199
Dong Jun Kim, Y. Song, J. Lee
The rise in sea levels due to climate change causes a decrease in the discharge capacity of sewer pipes and an increase in the risk of urban inundation due to the encroaching of outfall to the coast. Therefore, it is crucial to quantitatively evaluate and predict the increasing degree of risk to properly respond to the risk of inundation that is aggravated by the effects of rising sea levels. In this study, two research areas were selected in consideration of the regional characteristics of the coastal area and the sea level rise scenarios. In the selected research areas, the performance of the sewer network was quantified through a reliability technique. Accordingly, the change in the Disaster Prevention Performance Target Rainfall according to the sea level rise was analyzed and reevaluated. The results showed that the target rainfall for disaster prevention performance by rainfall duration in Wando was 35.6% to 41.7% and in Sacheon, it was 36.7% to 67.5% under the influence of the approximate highest high water. This study presented a plan to adjust the target rainfall for disaster prevention performance, which should be raised in consideration of the sea level rise to meet the current target rainfall for disaster prevention performance. In response to the flood risk of coastal cities increasing due to rising sea levels, the results of this study are expected to serve as basic data to establish disaster reduction strategies for coastal cities.
{"title":"Potential Performance Assessment of Coastal Urban Sewer Network according to Sea Level Rise","authors":"Dong Jun Kim, Y. Song, J. Lee","doi":"10.9798/kosham.2023.23.1.199","DOIUrl":"https://doi.org/10.9798/kosham.2023.23.1.199","url":null,"abstract":"The rise in sea levels due to climate change causes a decrease in the discharge capacity of sewer pipes and an increase in the risk of urban inundation due to the encroaching of outfall to the coast. Therefore, it is crucial to quantitatively evaluate and predict the increasing degree of risk to properly respond to the risk of inundation that is aggravated by the effects of rising sea levels. In this study, two research areas were selected in consideration of the regional characteristics of the coastal area and the sea level rise scenarios. In the selected research areas, the performance of the sewer network was quantified through a reliability technique. Accordingly, the change in the Disaster Prevention Performance Target Rainfall according to the sea level rise was analyzed and reevaluated. The results showed that the target rainfall for disaster prevention performance by rainfall duration in Wando was 35.6% to 41.7% and in Sacheon, it was 36.7% to 67.5% under the influence of the approximate highest high water. This study presented a plan to adjust the target rainfall for disaster prevention performance, which should be raised in consideration of the sea level rise to meet the current target rainfall for disaster prevention performance. In response to the flood risk of coastal cities increasing due to rising sea levels, the results of this study are expected to serve as basic data to establish disaster reduction strategies for coastal cities.","PeriodicalId":416980,"journal":{"name":"Journal of the Korean Society of Hazard Mitigation","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-02-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134430412","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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