1. College of Electrical and Engineering Control,Liaoning Technical University,Huludao　 125105,China;2. School of Mechanics and Engineering,Liaoning Technical University,Fuxin　 123000,China;3. College of Safety Science and Engineering,Liaoning Technical University,Fuxin　 123000,China

对由顶板岩、煤层、底板岩组成的复合煤岩体受载破裂内部的红外辐射温度的变化规律进行研究。分别在试样砂岩、煤样的中部不同方向钻孔,利用红外测温仪测量试样内部温度来研究其受载变形直至孔破裂过程中的红外辐射温度的演化特征。结果表明:复合煤岩在加载试验过程中均存在热弹效应和摩擦热效应。煤体裂隙面之间错动和摩擦产生的热量明显大于热弹效应产生的热量,导致内部温度上升0.17℃;而顶、底板砂岩的热弹效应起主导作用,温度升高分别为0.04,0.05℃。煤、顶底板砂岩的内部红外辐射温度和应变、应力和温度线性拟合后均呈较强线性正相关关系。

Variation of internal infrared radiation temperature of composite coal-rock fractured under load was studied. The composite coal-rock is composed of top slate,coal seam and floor rock. According to the experiment,the sandstone sample and coal sample were drilled at their centerin different directions respectively. The internal temperature of the sample was measured by infrared thermometer to study the infrared thermometer variation characteristics in the process of the loading deformation until the hole was cracked. The results show that there are thermoelastic effect and frictional heat effect during loading tests. The heat generated by the friction between the coal body and the fracture surface is significantly higher than that of the thermal elastic effect,resulting in a significant increase of 0. 15 ℃ . The ther- moelastic effect of roof and floor sandstone plays a leading role,resulting in an increase of 0. 04 ℃ ,0. 05 ℃ respec- tively. The interior of the coal,roof and floor sandstone infrared radiation temperature and strain,stress and temperature all have a strong linear positive correlation.

国家自然科学基金青年基金资助项目(51204087)；

Yang Zhen,Qi Qingjie,Ye Dandan,et al. Variation of internal infrared radiation temperature of composite coal-rock fractured under load [J]. Journal of China Coal Society,2016,41(3):618-624.