加载岩石红外辐射实验与数值模拟对比分析  

Analysis on Infrared Test And Numerical Test For The Loding Rock

作　　者：李国良[1] 

机构地区：[1]河北理工大学资源与环境工程学院,河北唐山063009

出　　处：《河北理工大学学报（自然科学版）》2008年第3期5-9,共5页Journal of Hebei Polytechnic University:Social Science Edition

摘　　要：利用红外仪对岩石试件进行单轴加载变形破坏过程进行监测,得到试件破坏过程的红外热像。另外,利用RFPA软件对试件在加载过程进行数值实验,并对试件进行应力状态分析。由红外实验与数值实验结果对比可以看到:试件破坏过程中整体以升温为主,弹性阶段压应力集中区的岩石试件表面红外辐射温度升高,而拉应力集中作用区温度降低。裂纹越集中区温度升高越明显。这一实验结果可以为利用红外手段预测预报地震、岩体工程破坏失稳提供进一步的理论依据。The thermal infraed imager is used for testing, the deformation and failure process of the loading rocks, and the thermal infrared images which indicate temperature field changes of testing surface are obtained. Furthermore, the numerical test is conducted by using a rock tailure process analysis computer program （RFPA）. Comparing tesults of thermal infraree test and numerical test,it reveal that the temperature of testing surface rises generally. In the elasticity moment, the infrared temperaturerises where the pressure concentration regions, and it would be fell in concentration regions, the temperature rise rapidlly. This result could be used for forecasting the failure of rock structures or earthquake by the way of IR.

关 键 词：红外热像 数值模拟 应力集中 裂纹 

分 类 号：TD315.3[矿业工程—矿井建设]