Abstract: Urban indoor water park has always been the top priority of fire supervision because of its architectural particularity, functional diversity and disaster risk. In the process of fire risk assessment, smoke flow control and personnel safety evacuation are always the key problem of the assessment. Taking an indoor water park as an example, according to the principle of fire safety engineering and the most unfavorable principle, considering the different seasons, business formats, action ability of tourists and characteristics of amusement facilities, the fire scene model was established. Through the control indexes such as the height of flue gas layer, the concentration of CO, the qualitative and quantitative simulation analysis of flue gas flow and personnel evacuation was carried out. Combined with the results of fire risk assessment, references for the fire risk assessment of urban indoor water park and other places with special functions, large span, large space and multiple formats were provided.

Key words: indoor water park, smoke flow, personnel evacuation, fire risk assessment