| 砂岩裂纹发育过程的温度场变化特征 |
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| 引用本文： | 田丰,孙海,马立强,韩杰,陈咪咪,杜园园,付煜,王飞.砂岩裂纹发育过程的温度场变化特征[J].矿业安全与环保,2022(1):14-19. |
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| 作者姓名： | 田丰 孙海 马立强 韩杰 陈咪咪 杜园园 付煜 王飞 |
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| 作者单位： | 1.辽宁石油化工大学土木工程学院石油化工特种建筑材料重点实验室;2.中国矿业大学矿业工程学院深部煤炭资源开采教育部重点实验室;3.德国弗赖贝格工业大学岩土工程研究所 |
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| 摘 要： | 利用热电偶多路温度测试仪和红外热像仪,分别测定了砂岩平台巴西圆盘试样Ⅰ型起裂裂纹发育过程中的物理温度和红外辐射温度变化.热电偶多路温度测试过程中,约95％的试样裂纹起裂时载荷发生应力调整,与此同时其物理温度突增,最高升温幅度0.74℃(平均0.16℃).红外热像仪测试过程中,约20％的试样裂纹起裂时红外辐射温度升高(平...
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| 关 键 词： | 平台巴西圆盘 Ⅰ型裂纹 温度场 红外辐射 裂纹发育 应力调整 |
Characteristics of temperature field variation during sandstone crack development |
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| Affiliation: | ,Liaoning Key Laboratory of Petrochemical Special Building Materials, School of Civil Engineering, Liaoning Petrochemical University,Key Laboratory of Deep Coal Resource Mining, Ministry of Education of China, School of Mines,China University of Mining and Technology,Geotechnical Engineering Research Institute, Goethe University Frankfurt |
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| Abstract: | By using thermocouple multi-channel temperature tester and infrared thermal imager, the changes of physical temperature and infrared radiation temperature during mode-Ⅰ crack development of sandstone flattened Brazilian disk(FBD) specimen were measured respectively.In the thermocouple multi-channel temperature test, about 95% of the specimens have experienced stress change at the crack initiation, while the physical temperature increases abruptly, with the maximum temperature increases by 0.74 ℃(the average temperature increases by 0.16 ℃).In the test of infrared thermal imager, the infrared radiation temperature of about 20% specimens increases at crack initiation(the average temperature increases by 0.03 ℃). The experimental results show that the physical temperature measurement technology and infrared temperature measurement technology can capture the temperature variation in crack development before coal and rocks fail. |
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| Keywords: | flattened Brazilian disk mode-Ⅰ specimen temperature field infrared radiation crack development stress adjustment |
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