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选取宽2～11 cm、厚3 mm的樟木、杉木和白木试样进行了一系列实验,测量了火蔓延速度、火焰高度、火焰温度和试样表面温度。结果表明,火焰高度随试样宽度增加而增大,并在宽度增加至某个值后不再增大;同宽度下,密度大的试样火焰高度大。放置角度为负时,不同密度试样的火蔓延速度差较小,角度为正时,火蔓延速度随角度增加而增大,且不同密度试样的火蔓延速度差变大.
A series of experiments were carried out on samples of camphor, fir and white wood with the width of 2 ~ 11 cm and the thickness of 3 mm. The fire propagation velocity, flame height, flame temperature and sample surface temperature were measured. The results show that the height of the flame increases with the increase of the specimen width and does not increase after the width increases to a certain value. Under the same width, the specimen with the higher density has a higher flame height. When the placement angle is negative, the difference in fire spread rate between specimens with different densities is small. When the angle is positive, the fire propagation velocity increases with the increase of angle, and the difference of fire propagation velocity between samples with different densities becomes larger.