1. Jiangsu Key Laboratory of Fire Safety in Urban Underground Space, China University of Mining and Technology, Xuzhou, China
2. Key Laboratory of Gas and Fire Control for Coal Mines, China University of Mining and Technology, Xuzhou, China
3. School of Safety Engineering, China University of Mining and Technology, Xuzhou, China
4. Department of Civil, Environmental and Geomatic Engineering, University College London, London, UK
5. School of Environment Science and Spatial Informatics, China University of Mining and Technology, Xuzhou, China