通过建立煤火的地电模型,采用有限差分法对温纳等5种装置进行正演模拟,在对正演数据加入噪声干扰后,采用高斯-牛顿迭代法进行迭代求解反演。反演结果表明:火区燃烧中心、烧空区和冒落带在5种装置的视电阻率拟断面图上均反映出了异常;复合对称四极装置对火区燃烧中心的分辨效果最好,温纳装置对烧空区和冒落带的分辨效果最好。采用以上2种装置类型对某火区进行了高密度电法探测,准确的分辨出了该火区的燃烧中心、烧空区和冒落带。研究成果为煤田火灾的准确探测提供了相应的理论基础和参考。 By establishing the geoelectric model of coal-fired fire, finite element method was used to simulate five kinds of devices such as WENNER. After noise interference was added to the forward data, the iterative solution was performed by Gauss-Newton iterative method. The inversion results show that the fire center, the burned area and the caving zone all reflect the anomalies in the resistivity profiles of the five devices. The composite symmetry quadrupole device has the best resolution for the fire center , Winner device on the burning area and the best resolution of the caving zone. The above two kinds of device types were used to detect a certain fire area by high-density electric method, and the combustion center, burning-out area and caving zone of the fire area were accurately identified. The research results provide the theoretical basis and reference for accurate detection of coal fires.