Study on Smoke Characteristics in Cavern Complexes of Pumped-Storage Power Stations
The underground power houses of pumped-storage power stations (PSPSs) are highly complex, with interconnected and multidimensional structures, including various tunnels, such as the main and auxiliary power houses (MAPH), main transformer tunnel (MTT), tailrace gate tunnel (TGT), access tunnels (ATs...
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| Format: | Article |
| Language: | English |
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MDPI AG
2024-12-01
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| Series: | Fire |
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| Online Access: | https://www.mdpi.com/2571-6255/7/12/453 |
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| author | Peifeng Hu Tong Xu Chang Liu Kai Wang Fazheng Chong Fengju Shang Jiansong Wu |
| author_facet | Peifeng Hu Tong Xu Chang Liu Kai Wang Fazheng Chong Fengju Shang Jiansong Wu |
| author_sort | Peifeng Hu |
| collection | DOAJ |
| description | The underground power houses of pumped-storage power stations (PSPSs) are highly complex, with interconnected and multidimensional structures, including various tunnels, such as the main and auxiliary power houses (MAPH), main transformer tunnel (MTT), tailrace gate tunnel (TGT), access tunnels (ATs), cable tunnels (CTs) etc. During intensive civil construction and electromechanical installation, fire risk becomes particularly prominent. Current research mainly examines fire incidents within individual tunnels, lacking comprehensive analyses of smoke spread across the entire cavern network. Therefore, in this study, a numerical model of a cavern complex in a PSPS was established to analyze smoke behavior and temperature distribution under various fire scenarios. The results indicated that when a fire occurred in the MAPH, the fire risk was relatively higher compared to fires in other places. Using the example of smoke spread from the MAPH to the MTT, the smoke spread process through key connecting caverns was analyzed. Initially, the temperature and velocity were stable, and the CTs and traffic cable tunnel in the auxiliary powerhouse (TCTAP) were the main smoke paths. After 7 min, the heat release rate (HRR) became stable, and CTs and ATs became the main paths for smoke spread, which could provide a reference for improving fire design in underground cavern systems. |
| format | Article |
| id | doaj-art-9c66d735d6ce4cff93aadba90fdabea0 |
| institution | Kabale University |
| issn | 2571-6255 |
| language | English |
| publishDate | 2024-12-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Fire |
| spelling | doaj-art-9c66d735d6ce4cff93aadba90fdabea02024-12-27T14:25:45ZengMDPI AGFire2571-62552024-12-0171245310.3390/fire7120453Study on Smoke Characteristics in Cavern Complexes of Pumped-Storage Power StationsPeifeng Hu0Tong Xu1Chang Liu2Kai Wang3Fazheng Chong4Fengju Shang5Jiansong Wu6School of Emergency Management and Safety Engineering, China University of Mining and Technology—Beijing, Beijing 100083, ChinaSchool of Emergency Management and Safety Engineering, China University of Mining and Technology—Beijing, Beijing 100083, ChinaChina Electric Power Research Institute, Beijing 100192, ChinaState Grid Xinyuan Group Co., Ltd., Beijing 100052, ChinaState Grid Xinyuan Xinjiang Hami Pumped Storage Co., Ltd., Hami 839000, ChinaState Grid Anhui Electric Power Research Institute, Anhui Province Key Laboratory of Electric Fire and Safety Protection (State Grid Laboratory of Fire Protection for Transmission and Distribution Facilities), Hefei 230601, ChinaSchool of Emergency Management and Safety Engineering, China University of Mining and Technology—Beijing, Beijing 100083, ChinaThe underground power houses of pumped-storage power stations (PSPSs) are highly complex, with interconnected and multidimensional structures, including various tunnels, such as the main and auxiliary power houses (MAPH), main transformer tunnel (MTT), tailrace gate tunnel (TGT), access tunnels (ATs), cable tunnels (CTs) etc. During intensive civil construction and electromechanical installation, fire risk becomes particularly prominent. Current research mainly examines fire incidents within individual tunnels, lacking comprehensive analyses of smoke spread across the entire cavern network. Therefore, in this study, a numerical model of a cavern complex in a PSPS was established to analyze smoke behavior and temperature distribution under various fire scenarios. The results indicated that when a fire occurred in the MAPH, the fire risk was relatively higher compared to fires in other places. Using the example of smoke spread from the MAPH to the MTT, the smoke spread process through key connecting caverns was analyzed. Initially, the temperature and velocity were stable, and the CTs and traffic cable tunnel in the auxiliary powerhouse (TCTAP) were the main smoke paths. After 7 min, the heat release rate (HRR) became stable, and CTs and ATs became the main paths for smoke spread, which could provide a reference for improving fire design in underground cavern systems.https://www.mdpi.com/2571-6255/7/12/453pumped-storage power stations (PSPSs)cavern complexesnumerical simulationsmoke characteristics |
| spellingShingle | Peifeng Hu Tong Xu Chang Liu Kai Wang Fazheng Chong Fengju Shang Jiansong Wu Study on Smoke Characteristics in Cavern Complexes of Pumped-Storage Power Stations Fire pumped-storage power stations (PSPSs) cavern complexes numerical simulation smoke characteristics |
| title | Study on Smoke Characteristics in Cavern Complexes of Pumped-Storage Power Stations |
| title_full | Study on Smoke Characteristics in Cavern Complexes of Pumped-Storage Power Stations |
| title_fullStr | Study on Smoke Characteristics in Cavern Complexes of Pumped-Storage Power Stations |
| title_full_unstemmed | Study on Smoke Characteristics in Cavern Complexes of Pumped-Storage Power Stations |
| title_short | Study on Smoke Characteristics in Cavern Complexes of Pumped-Storage Power Stations |
| title_sort | study on smoke characteristics in cavern complexes of pumped storage power stations |
| topic | pumped-storage power stations (PSPSs) cavern complexes numerical simulation smoke characteristics |
| url | https://www.mdpi.com/2571-6255/7/12/453 |
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