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Through analysing the perimeter of forest fire spread and the fractal characteristic of its border line,and applying the fractal theory,the fractal perimeter model of forest fire spread has been established,and the calculating formula of the fractal perimeter deduced.

本文在分析森林火灾火场周长和边界分形特性的基础上，应用分形理论，建立了森林火灾火场周长的分形模型，导出了分形周长公式。

In current performance-based fireproof design methods,the fire spread and crowd evacuation usually are separately considered,which neglects the real-time influence of fire environment on the crowd evacuation.

在现行的性能化防火设计中,通常将火灾发展与人员疏散两个过程分开考虑,从而忽略了火场环境对人员疏散过程的实时作用。