矿井支柱的一种阻燃方法——炭化木据美国矿业局最近披露，在地下矿井的木头支柱上“镀”上一层炭，能有效地起到防火作用。预炭化法即用一块煤气烧红的加热板均匀地使木头的表面炭化。这种炭化法保存了木头的天然结构及木头内未炭化木头的完整性。表面炭化层是一种不良的导热 A Flame Retardant Method for Mine Pillars - Carbonized Wood According to a recent disclosure by the United States Department of Mines, a layer of charcoal is “plated” on the wood pillars of underground mines, effectively preventing fire. The pre-carbonization method uses a piece of gas-fired red hot plate to uniformly carbonize the surface of the wood. This carbonization method preserves the natural structure of the wood and the integrity of the wood within the wood. Surface carbonization is a poor thermal conductivity