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通过借鉴Rothermel(1972年)建立的林火蔓延的数学模型。提出了适合我国林区可燃物分布特性的火蔓延数学模型,并在其基础上筑构出用于估算特定可燃物分布状况、变环境条件下火蔓延趋势的专家系统—FF—1G软件。该软件能迅速、直观地显示出复杂地形条件下,相应的环境风速作用时地表火火蔓延不同阶段的过火区域分布状况。对若干实例计算的结果表明,其可靠性高,实用性强,应用背景广。
By drawing on the mathematic model of forest fire spread established by Rothermel (1972). A mathematical model of fire spread suitable for the distribution of combustibles in our country’s forest was put forward. On the basis of that, an expert system-FF-1G software was constructed for estimating the distribution of specific combustibles and the trend of fire spread under varying environmental conditions. The software can quickly and intuitively show the distribution of over-fire regions in different stages of surface fire spread under the influence of ambient wind speed under complex terrain conditions. The calculation results of several examples show that it has high reliability, strong practicability and wide application background.