地下煤火对煤炭资源及环境造成严重影响，而火区位置的精准探测是开展煤火治理工作的前提和关键。在研究煤火形成过程基础上，结合文献调研、数值分析、物理实验、现场勘测等方法，深入开展地下煤火探测技术及工程应用的相关研究。首先，详细介绍现有不同煤火探测技术的原理及特点，并分析和总结其优劣。然后，结合实际案例，阐述各探测技术的研究及工程应用现状，揭示现阶段地下煤火探测存在的问题。在此基础上，提出未来煤火探测的研究重点与发展方向。研究结果可为我国地下煤火的科学研究和防治提供重要技术支撑。

Underground coal fires have a serious impact on coal resources and the environment, and the accurate detection of the location of fire areas is the premise and key to carrying out coal fire control. Based on the formation process of coal fire, this paper combines literature review, numerical analysis, physical experiments, field investigation and other methods to study the underground coal fire detection technologyies and their engineering applications. Firstly, the principles and characteristics of different existing coal fire detection technologies are introduced in detail, and their advantages and disadvantages are analyzed and summarized. Then, combined with actual cases, the research and engineering application status of various detection technologies are expounded, and the problems existing in underground coal fire detection at this stage are revealed. On this basis, the research focus and development direction of coal fire detection in the future are proposed. The research results can provide important technical support for the scientific research and prevention of underground coal fires in China.