A comprehensive risk assessment of Chinese high-speed railways affected by multiple meteorological hazards
Meteorological hazards pose a significant risk to the operation and safety of the Chinese railway system. As China Railway High-speed (CRH) has become a vital part of the Chinese transportation infrastructure, an improved understanding of the spatial pattern of multiple hazards across the railway ne...
| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2022-12-01
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| Series: | Weather and Climate Extremes |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2212094722000986 |
| _version_ | 1811336170173366272 |
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| author | Shao Sun Ge Gao Ying Li Xingyan Zhou Dapeng Huang Deliang Chen Yaqun Li |
| author_facet | Shao Sun Ge Gao Ying Li Xingyan Zhou Dapeng Huang Deliang Chen Yaqun Li |
| author_sort | Shao Sun |
| collection | DOAJ |
| description | Meteorological hazards pose a significant risk to the operation and safety of the Chinese railway system. As China Railway High-speed (CRH) has become a vital part of the Chinese transportation infrastructure, an improved understanding of the spatial pattern of multiple hazards across the railway network is urgently needed, especially in the context of accelerated climate change. This study provides a spatial analysis of the dominant meteorological hazards affecting the CRH network (i.e., gales, rainfall, and snow), in terms of both intensity and frequency, and identifies hazard zones according to CRH operating standards. Given that meteorological hazards can lead to speed limitation or disruption of CRH trains, a risk matrix model is developed based on hazard intensity and designated railway speed to comprehensively assess the risk level of CRH lines in China. Risk assessment indicates that CRH lines exposed to hazardous levels of gales, rainfall, and snow account for 6.0%, 29.3%, and 20.0% of the total line length, respectively, while 7.3% of CRH lines are exposed to multiple hazards. Meteorological risk maps for CRH operation reveal hotspot lines that require special adaptive or preventative measures, and emergency protocols to reduce potential losses and disruptions. |
| first_indexed | 2024-04-13T17:35:30Z |
| format | Article |
| id | doaj.art-e2a6c15a78be462e9c6c233b5a402fe0 |
| institution | Directory Open Access Journal |
| issn | 2212-0947 |
| language | English |
| last_indexed | 2024-04-13T17:35:30Z |
| publishDate | 2022-12-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Weather and Climate Extremes |
| spelling | doaj.art-e2a6c15a78be462e9c6c233b5a402fe02022-12-22T02:37:24ZengElsevierWeather and Climate Extremes2212-09472022-12-0138100519A comprehensive risk assessment of Chinese high-speed railways affected by multiple meteorological hazardsShao Sun0Ge Gao1Ying Li2Xingyan Zhou3Dapeng Huang4Deliang Chen5Yaqun Li6Laboratory for Climate Studies, National Climate Center, China Meteorological Administration, Beijing, ChinaLaboratory for Climate Studies, National Climate Center, China Meteorological Administration, Beijing, China; Collaborative Innovation Center on Forecast and Evaluation of Meteorological Disasters, Nanjing University of Information Science and Technology, Nanjing, China; Corresponding author. Laboratory for Climate Studies, National Climate Center, China Meteorological Administration, Beijing, China.Laboratory for Climate Studies, National Climate Center, China Meteorological Administration, Beijing, ChinaLaboratory for Climate Studies, National Climate Center, China Meteorological Administration, Beijing, ChinaLaboratory for Climate Studies, National Climate Center, China Meteorological Administration, Beijing, China; Collaborative Innovation Center on Forecast and Evaluation of Meteorological Disasters, Nanjing University of Information Science and Technology, Nanjing, ChinaRegional Climate Group, Department of Earth Sciences, University of Gothenburg, Gothenburg, SwedenInstitute of Computing Technology, China Academy of Railway Sciences, Beijing, ChinaMeteorological hazards pose a significant risk to the operation and safety of the Chinese railway system. As China Railway High-speed (CRH) has become a vital part of the Chinese transportation infrastructure, an improved understanding of the spatial pattern of multiple hazards across the railway network is urgently needed, especially in the context of accelerated climate change. This study provides a spatial analysis of the dominant meteorological hazards affecting the CRH network (i.e., gales, rainfall, and snow), in terms of both intensity and frequency, and identifies hazard zones according to CRH operating standards. Given that meteorological hazards can lead to speed limitation or disruption of CRH trains, a risk matrix model is developed based on hazard intensity and designated railway speed to comprehensively assess the risk level of CRH lines in China. Risk assessment indicates that CRH lines exposed to hazardous levels of gales, rainfall, and snow account for 6.0%, 29.3%, and 20.0% of the total line length, respectively, while 7.3% of CRH lines are exposed to multiple hazards. Meteorological risk maps for CRH operation reveal hotspot lines that require special adaptive or preventative measures, and emergency protocols to reduce potential losses and disruptions.http://www.sciencedirect.com/science/article/pii/S2212094722000986Meteorological hazardsRailway systemSpatial analysisRisk assessmentChina |
| spellingShingle | Shao Sun Ge Gao Ying Li Xingyan Zhou Dapeng Huang Deliang Chen Yaqun Li A comprehensive risk assessment of Chinese high-speed railways affected by multiple meteorological hazards Weather and Climate Extremes Meteorological hazards Railway system Spatial analysis Risk assessment China |
| title | A comprehensive risk assessment of Chinese high-speed railways affected by multiple meteorological hazards |
| title_full | A comprehensive risk assessment of Chinese high-speed railways affected by multiple meteorological hazards |
| title_fullStr | A comprehensive risk assessment of Chinese high-speed railways affected by multiple meteorological hazards |
| title_full_unstemmed | A comprehensive risk assessment of Chinese high-speed railways affected by multiple meteorological hazards |
| title_short | A comprehensive risk assessment of Chinese high-speed railways affected by multiple meteorological hazards |
| title_sort | comprehensive risk assessment of chinese high speed railways affected by multiple meteorological hazards |
| topic | Meteorological hazards Railway system Spatial analysis Risk assessment China |
| url | http://www.sciencedirect.com/science/article/pii/S2212094722000986 |
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