含水率对单轴加载砂岩红外辐射特性的影响  

Effect of Water Content on Infrared Radiation Characteristics of Sandstone under Uniaxial Loading

作　　者：韩长霖 付煜 厚欣怡 李佳琦 王伟[1] 孙海 HAN Changlin;FU Yu;HOU Xinyi;LI Jiaqi;WANG Wei;SUN Hai(School of Civil Engineering,Liaoning Petrochemical University,Fushun Liaoning 113001,China)

机构地区：[1]辽宁石油化工大学土木工程学院,辽宁抚顺113001

出　　处：《辽宁石油化工大学学报》2023年第6期60-66,共7页Journal of Liaoning Petrochemical University

基　　金：辽宁省教育厅基础研究项目(L2020029);辽宁省教育厅科学技术研究一般青年项目(L2020050);辽宁省科技厅博士科研启动项目(2021-BS-247);辽宁石油化工大学人才引进科研启动基金项目(2021XJJL-012);辽宁省大学生创新创业训练计划项目(2021101480030)。

摘　　要：开展4种不同含水率砂岩单轴加载过程中的红外辐射观测试验,通过研究含水砂岩红外辐射信息与应力之间的量化关系,揭示了水对砂岩红外辐射特性的影响。结果表明,随着含水率的增大,砂岩红外异常区的规模越大,红外异常现象越明显;砂岩的红外辐射计数平均值(R_(IRC))随着应力平均值(σ)的增大而增大,两者存在线性关系;随着含水率的增加,R_(IRC)与σ拟合曲线的斜率逐渐增加;砂岩R_(IRC)与含水率在压密阶段和弹性阶段呈中度相关,在塑性阶段和峰后破坏阶段呈高度线性相关(相关系数可达0.96)。The infrared radiation observation experiment were carried out in the uniaxial loading process of four sandstones with different water contents.By studying the quantitative relationship between the infrared radiation information and stress of water-bearing sandstone,the influence of water on the infrared radiation characteristics of sandstone was revealed.The results show that with the increase of water content,the size of sandstone infrared anomaly area was larger,and the infrared anomaly phenomenon was more obvious.The mean value of infrared radiation counts of sandstone increased with the increase of the mean value of stress,and there was a linear relationship between them.After fitting the mean value of infrared radiation counts with the mean value of stress,it is found that the slope increases gradually with the increase of water content.The mean value of infrared radiation counts of sandstone was moderately correlated with water content in compaction and elastic stage,and highly linear correlation in plastic stage and post-peak failure stage(correlation coefficient up to 0.96).

关 键 词：砂岩 红外辐射 含水率 单轴加载 

分 类 号：TD315[矿业工程—矿井建设]