Once a blowout occurs in a high-sulfur gas well,sulfur gas will spread rapidly,posing a great threat to human life and health and environmental safety.Accurate simulation of sulfur gas diffusion after blowout is helpful in understanding the diffusion pattern of toxic gas and thus formulate effective emergency measures to avoid or reduce the possible damage caused by the diffusion of sulfur gas.Based on literature review,the internal and external factors affecting the diffusion of sulfur gas are analyzed.The principles and features of sulfur gas diffusion simulation technology are expounded.Finally,the prospect of simulation technology of sulfur gas diffusion after blowout under complex terrain and meteorological conditions is proposed.The following results are obtained.First,the main factors for sulfur gas diffusion after blowout include leakage source,meteorology,topography,and physical and chemical interactions.The coupling of internal and external factors should be considered to accurately simulate the dynamic pattern of sulfur gas diffusion.Second,the pattern of sulfur gas diffusion is mainly investigated by field simulation,wind tunnel simulation,numerical simulation,mathematical model,professional software,or other means,which can be rationally selected to provide a more accurate simulation of sulfur gas diffusion,thereby guiding the development and implementation of emergency and rescue measures.Third,to deal with sulfur gas diffusion after blowout under complex terrain and meteorological conditions,an integrated software system incorporating sulfur gas diffusion simulation,leakage monitoring and early warning,and emergency decision support will be established in conjunction with artificial intelligence technology.This system will allow for integrated simulation and monitoring.It is concluded that the proposed simulation software system for sulfur gas diffusion after blowout can greatly support the safety assessment and the preparation of emergency response and control measures in sulfur gas exploration and development.It plays an important role in ensuring people's life safety and natural environment.
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