木垛火作为标准火,既可以用于房间火试验,也可用于林野火燃烧速率试验。林野火的主要特点是普遍受风速影响。美国农业部林业局选取不同尺寸的燃烧木垛在0~0.7m/s风速下开展试验,研究风速对林野火燃烧速率的影响。结果表明,风速对燃烧速率的影响取决于燃料层厚度,较大尺寸的燃料因孔隙率大其燃烧速率增加明显, Wood fire as a standard fire, can be used for room fire test, can also be used for forest wildfire burning rate test. The main feature of wild forest fire is generally affected by wind speed. The United States Department of Agriculture Forestry Bureau selected different sizes of burning wood stack at 0 ~ 0.7m / s wind speed test to study the wind speed on the forest wildfire burning rate. The results show that the influence of wind speed on the burning rate depends on the thickness of the fuel layer. The larger size of the fuel increases the burning rate obviously due to the large porosity,