复合煤岩受载破裂内部红外辐射温度变化规律  

Variation of internal infrared radiation temperature of composite coal-rock fractured under load

作　　者：杨桢[1,2] 齐庆杰[2] 叶丹丹[1] 李鑫[1] 罗浩[3] 

机构地区：[1]辽宁工程技术大学电气与控制工程学院,辽宁葫芦岛125105 [2]辽宁工程技术大学安全科学与工程学院,辽宁阜新123000 [3]辽宁工程技术大学力学与工程学院,辽宁阜新123000

出　　处：《煤炭学报》2016年第3期618-624,共7页Journal of China Coal Society

基　　金：国家自然科学基金青年基金资助项目(51204087)

摘　　要：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 sandstonesample and coal sample were drilled at their centerin different directions respectively. The internal temperature of thesample was measured by infrared thermometer to study the infrared thermometer variation characteristics in the processof the loading deformation until the hole was cracked. The results show that there are thermoelastic effect and frictionalheat effect during loading tests. The heat generated by the friction between the coal body and the fracture surface issignificantly 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 temperatureall have a strong linear positive correlation.

关 键 词：复合煤岩 变形破裂 红外辐射温度 变化规律 线性拟合 

分 类 号：TD315[矿业工程—矿井建设]