某煤矿地表存在多处着火点及烧变岩，给煤矿生产带来很大的安全隐患，为排除安全隐患，查明烧变岩及活火区分布位置，在矿区内沿垂直于煤层露头方向布设高精度磁法及自然电位法测线54条，经处理分析，查明烧变岩5处、活火区2处。为验证成果的可靠性，在M5处进行钻探验证，钻孔揭露见烧变岩与利用高精度磁法推测结果一致。实践表明，利用高精度磁法寻找烧变岩与利用自然电位法寻找活火区的综合勘探方式，可有效探测煤矿火烧区灾害，为类似地区解决相似问题提供借鉴意义。

There are many fire points and burnt rock on the surface of a coal mine, which bring great safety risks to coal mine production. In order to eliminate the safety risks and identify the distribution position of the active fire area and burnt rock, within the mining area, 54 survey lines for the high-precision magnetic method and spontaneous potential method are laid out along the direction perpendicular to the coal seam outcrop. After processing and analysis, 5 burnt rock and 2 active fire areas can effectively are identified. In order to verify the reliability of the results, the drilling verification is conducted at the location M5, and the burnt rock revealed by the drilling is consistent with the predicted results of high-precision magnetic method. Practice has shown that the integrated exploration method in which using the high-precision magnetic method to locate burnt rock and the spontaneous potential method to find active fire areas can effectively detect coal mine fire area hazards and provide reference for solving similar problems in similar areas.