标题：Research on spontaneous combustion tendency of No. 3 coal about complex seam under different geological structure in Xin'an Coal Mine
作者：Zhao, Wen-Bin ;Zhang, Shou-Yong ;Wang, Jin-Feng ;Xin, Song
作者机构：[Zhao, Wen-Bin ;Xin, Song ] Key Laboratory of Mine Disaster Prevention and Control, Ministry of Education, Shandong University of Science and Technolo 更多
来源：Meitan Xuebao/Journal of the China Coal Society
摘要：Taking the coal at the same seam under different geological structure of Xin'an Coal Mine as sample, the differences of active structures of coal samples were analyzed with infrared spectrum analysis. Thermogravimetric analysis(TGA) under different oxidation condition were carried out in coal-oxygen composite process to analyze the regulation of the spontaneous combustion characteristic temperature. Results indicate that the higher the peak values of active structures under different geological structure, the more spontaneous oxidation tendency of coal samples. TGA curves show that the oxidation activity and volatility of coal samples at the fault and stress field are active in the process of oxidation and heating. Coal samples at the fault and stress field are easily oxidized to weight loss at the initial stage of the oxidation during mining. The temperature of coal samples at the fault and stress field is comparatively high in the latter period of combustion and obviously to lose weight. The differences of spontaneous oxidation tendency are affected by geological structure. At the same seam and coal face, the spontaneous oxidation tendency and process of coal samples under different geological structure are different.