地温对煤层自燃危险性的影响研究

研究了地温地煤层自燃危险性的影响，通过分析煤体氧化放热性，自燃蓄热条件和供氧条件与地温的关系，推导出煤温与砂氧速度和放热强度的关系式、热风压和升温必要条件的表达式，同时在煤自然发火实验台上进行了实验研究，研究结果表明，由于地温的作用，增强了煤体自身的氧化放热性能，同时改善了自然的蓄热条件和供氧条件，增大了煤体的自燃危险性，该项研究对于进一步完善自燃理论，以及促进煤层自燃防治技术的发展具有一定的实际

Research on Effect of Ground Temperature on Spontaneous Combustion Danger of Coal Seam

The influence of the ground temperature on spontaneous combustion danger of coal seam is studied. A relation formula among coal temperature, velocity of exhausting oxygen and intensity of releasing heat, and two formulas both about thermal air pressure and prerequisite for temperature raising are deduced by analyzing the relationship between ground temperature and three key factors of oxidizing and heat releasing property of coal, heat storing and oxygen supplying condition of spontaneous combustion. Experiments of the spontaneous combustion were carried out on the test rig. The investigation results show that oxidizing and heat releasing capacity of coal was strengthened and heat storing and oxygen supplying condition of spontaneous combustion were improved because of ground temperature. The present results further improve the theory of spontaneous combustion and propel the development of prevention and cure of spontaneous combustion of coal seam.