Abstract
We have developed a mesh-type, time-slicing simulation system of fire-spreading under a strong quake. In this paper, we design a series of simulation experiments according to the L27 (313) orthogonal array and try to use it as an information system for disaster prevention plannings of urban areas. And first we suggest that it is the most crucial to reduse the percentage of wooden buildings from the results of the analysis of variance. Second, drawing a diagram of factorial effects we show that it is not sufficient to reduce its average percentage but necessary to consider structural factors of the area. Third, introducing a concept of “blocked domain” we indicate that how to array it is a very important problem.
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