我国有56%以上的重点矿井存在煤层自然发火危险，煤层自燃火灾是影响煤矿安全生产的主要灾害之一。煤自燃是一个煤氧复合放热为主、自发产生热量及热量积蓄引起煤体升温的非常复杂的物理化学过程。因此，研究煤自燃过程中温度场的变化情况是研究煤自燃参数的前提。 本论文在广泛查阅中外文献和系统总结前人研究成果基础上，采用有限元分析理论、实验研究和计算机模拟相结合的研究方法，基于大型煤自然发火实验台（装煤量1.5t），对煤自燃温度场进行研究。论文从煤自然发火实验的分析、实验台炉体结构的研究入手，以计算机为辅助手段，利用有限元分析软件ANSYS（ANalysis SYStem）的参数化设计语言APDL（ANSYS Parametric Design Language）建立煤自然发火实验台有限元模型，通过对模型进行加载求解，得出炉体内煤体上各点在某一时刻的温度情况、炉体内任意一点在煤自燃过程中温度变化情况，以及高温点的移动变化规律；并通过改变漏风强度、散热边界条件、煤样破碎粒度参数对模型进行反复计算，得出各参数与煤自然发火期及高温点移动的关系曲线；实现了温度场可视化三维输出。最后，论文利用东荣三矿煤样实验对该模型进行实例应用，结果证明模型对实验台温度场模拟的有效性。 将有限元分析技术与煤自然发火实验台相结合，对温度场进行模拟研究，目前还属于较新的应用。论文提出了基于ANSYS软件的有限元模型，经过分析和实例验证，该模型对实验台温度场动态模拟的方法是可行的。利用该模型模拟实验台温度场可以克服实验条件单一、时间长等不足，通过改变参数多次计算，达到对实验参数优化、节约实验时间的目的。

Spontaneous combustion of coal is one of the big disaster in the coal product, it’s reported that over 56% coal-mine exist such danger in our nation. As we know that the spontaneous combustion is a complex physical and chemical process including the oxidation of coal giving out heat, storing heat cause the temperature rise. So to study the change of the temperature field is a precondition to study the spontaneous parameters in the spontaneous process. Based on experiment unit of coal spontaneous combustion, this paper study the temperature field of the spontaneous combustion using finite element method analysis theory, experimental study and computer simulation, referring to China and foreign countries literature aboard and summarizing the former study result by the numbers. The author analysis the data of experiment unit of spontaneous combustion, comprehend the experiment unit structure, use computer as an assistant. A finite element method model of spontaneous combustion experiment was established using the ANSYS Parametric Design Language of the finite element method analysis system. The temperature of each coal point in the inner oven at a certain time, the temperature change of any point during the spontaneous combustion process and the high temperature point transformation disciplinarians were obtained. The connection profile between the spontaneous combustion period and the high temperature movement was get through altering air leak intension, boundary condition and granularity parameter of coal sample. Invisible three- dimensional output is realized. Finally, taking the coal sample of DongRong coal-mine as an example application, the result shows that the simulation is validity. It is a new application to combine the finite element method analysis technique and the experiment unit of spontaneous combustion together to study and simulate the temperature field. This paper bring forward the finite element method model based on ANSYS software, after analysis and taking real example to prove, we get the conclusion that this model is validity to simulate the experiment temperature field. Using this model can overcome some shortcoming such as the singleness and long time costing of the experiment. After several calculations through change the parameters we get the purpose of optimize the experimental parameters and saving experiment time.