Energy evolution and infrared radiation characteristics of different bedded coal under uniaxial compression
张国宁赵毅鑫孙远东宫智馨
ZHANG Guoning;ZHAO Yixin;SUN Yuandong;GONG Zhixin
中国矿业大学(北京)共伴生能源精准开采北京市重点实验室能源与矿业学院
为了研究不同层理煤变形破坏过程中能量演化及红外辐射响应特征,以红庆河煤矿3-1煤层的煤样为研究对象,开展了4种不同层理角度(0°、30°、60°及90°)单轴压缩试验,并利用红外热成像仪监测煤样变形破坏过程中的红外温度场特征。试验结果表明:随着层理角度的增加,试样的抗压强度及应变能均呈“V”形变化趋势,60°时达到最小值,层理对峰前阶段的弹性应变能
In order to study the energy evolution and infrared radiation response characteristics during the deformation and failure process of coal with different bedding angles, uniaxial compression tests with four different bedding angles (0°, 30°, 60° and 90°) were carried out on a strong burst liability coal samples from 3-1 coal seam of Hongqinghe coal mine. The infrared temperature field characteristics of the coal samples during deformation and damage were monitored using an infrared thermal imaging camera. The test results show that as the bedding angle increases the compressive strength and strain energy of the sample show a “V” shaped trend, reaching the minimum value at 60°. The bedding has a significant impact on the elastic strain
层理效应能量演化红外辐射前兆特征
uniaxial compression; bedding effect;energy evolution;infrared radiation;precursor characteristics
主办单位:煤炭科学研究总院有限公司 中国煤炭学会学术期刊工作委员会