天空冷背景下受力岩石微波辐射特征实验研究

doi:10.12068/j.issn.1005-3026.2020.08.019

东北大学学报:自然科学版 ›› 2020, Vol. 41 ›› Issue (8): 1180-1187.DOI: 10.12068/j.issn.1005-3026.2020.08.019

天空冷背景下受力岩石微波辐射特征实验研究

徐忠印¹，刘善军¹，吴立新²，车德福¹

(1.东北大学资源与土木工程学院，辽宁沈阳110819； 2.中南大学地球科学与信息物理学院，湖南长沙410006)

收稿日期:2019-07-19 修回日期:2019-07-19 出版日期:2020-08-15 发布日期:2020-08-28
通讯作者: 徐忠印
作者简介:两个以上作者简介中间加“；空格”徐忠印(1967-)，男，黑龙江双城人，东北大学讲师，博士；刘善军(1965-)，男，河北涿鹿人，东北大学教授，博士生导师；吴立新(1966-)，男，江西宜春人，中南大学教授，博士生导师; 车德福(1970-)，男，山东烟台人，东北大学教授，博士生导师.
基金资助:
国家自然科学基金资助项目(41930108，41871310) .

Experimental Study on the Microwave Radiation of Stressed Rock Under Cold Sky Background

XU Zhong-yin¹， LIU Shan-jun¹， WU Li-xin²， CHE De-fu¹

1.School of Resources & Civil Engineering，Northeastern University， Shenyang 110819， China; 2.School of Geosciences and Info-physics， Central South University， Changsha 410006， China.

Received:2019-07-19 Revised:2019-07-19 Online:2020-08-15 Published:2020-08-28
Contact: XU Zhong-yin
About author:-
Supported by:
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摘要/Abstract

摘要： 分析了环境因素对微波辐射观测的影响机理. 以此为基础，在天空冷背景条件下，利用岩石试验机、微波辐射计、声发射、温度测试仪等，开展了岩石弹性变形阶段循环加载微波辐射变化特征的室外观测实验. 结果表明，在天空冷背景下能可靠获取岩石受力变形过程中的微波辐射能量变化信息. 花岗岩弹性变形阶段的微波辐射亮温变化与应力间呈同步性很强的正相关关系，相关系数达0.94; 岩石表面的温度变化与应力间亦呈正相关，但其变化滞后于应力变化，且单位应力的微波亮温升幅远大于表面温度升幅. 实验证实了利用微波辐射观测手段可有效探测岩石受力引起的岩石内部应力状态的变化.

关键词: 遥感-岩石力学, 微波亮温, 天空冷背景, 岩石灾变, 应力变化, 遥感监测

Abstract: How environmental factors affect microwave radiation observation was analyzed. Based on the analysis， outdoor experiments were carried out with rock test machine， microwave radiometer， acoustic emission instrument， temperature tester and other equipment to observe microwave radiation characteristics of elastically deformed rock with cyclic loading under cold sky background. Results indicate that the microwave radiation energy changes generated from deformed rock can be detected reliably under cold sky background. In the elastically deformed granite， the microwave radiation energy changes and stress present the positive correlation， with the correlation coefficient of 0.94. The temperature change of the rock surface is positively correlated with the stress too， but the temperature change lags behind the stress change， and the microwave brightness temperature increment is much larger than the surface temperature rise per unit stress. It is verified that the changes in the internal stress state of rock can be detected by microwave observation.

Key words: remote sensing rock mechanics, microwave brightness temperature, cold sky background, rock disaster, stress change, remote sensing monitoring

中图分类号:

TP722.6

徐忠印，刘善军，吴立新，车德福. 天空冷背景下受力岩石微波辐射特征实验研究[J]. 东北大学学报:自然科学版, 2020, 41(8): 1180-1187.

XU Zhong-yin， LIU Shan-jun， WU Li-xin， CHE De-fu. Experimental Study on the Microwave Radiation of Stressed Rock Under Cold Sky Background[J]. Journal of Northeastern University Natural Science, 2020, 41(8): 1180-1187.

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天空冷背景下受力岩石微波辐射特征实验研究

Experimental Study on the Microwave Radiation of Stressed Rock Under Cold Sky Background

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[1]	毛文飞，吴立新，刘善军，徐忠印. 干、湿沙层对岩石受力微波辐射影响的实验对比[J]. 东北大学学报:自然科学版, 2018, 39(5): 710-715.
[2]	徐忠印，刘善军，吴立新. 岩石变形破裂红外与微波辐射变化特征对比研究[J]. 东北大学学报:自然科学版, 2015, 36(12): 1738-1742.
[3]	刘善军;吴立新;张艳博;陈群龙;. 潮湿岩石受力过程红外辐射的变化特征[J]. 东北大学学报(自然科学版), 2010, 31(2): 265-268.