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本文从理论上和试验上系统地探讨了木材炭化后的导电性能与它受热温度和受热时间的关系，阐明了在火灾中木材受热温度越高和木材受热时间越长其所生成木炭的导电性能越好的规律，为火灾调查人员提供了一种通过测定火灾现场残留木炭的电阻值来分析火灾现场温度分布情况，判定火势蔓延方向、起火部位及起火点的快捷有效的方法。
In this paper, the relationship between the electrical conductivity of wood after carbonization and its heating temperature and heating time is systematically discussed theoretically and experimentally. The results show that the higher the wood heating temperature and the longer wood heating time, the electrical conductivity The better law provides a method for fire investigators to analyze the temperature distribution in the fire site by measuring the resistance value of residual charcoal on the fire site and determine the direction of the fire spread, the fire site and the ignition point.