A Fiber Bragg Grating Borehole Deformation Sensor for Stress Measurement in Coal Mine Rock

doi:10.3390/s20113267

	A Fiber Bragg Grating Borehole Deformation Sensor for Stress Measurement in Coal Mine Rock
	Zhao, Wusheng 1,2,3; Zhong, Kun 1,2; Chen, Weizhong 1,2
刊名	SENSORS
	2020-06-01
卷号	20 期号:11 页码:15
关键词	fiber Bragg grating borehole deformation built-in check in situ stress induced stress
DOI	10.3390/s20113267
英文摘要	A borehole deformation sensor for long-term stress monitoring in coal mine rock based on optical fiber Bragg gratings (FBGs) is presented. The sensor converts borehole deformation into optical fiber strain by using four rings. For each ring, two FBGs are bonded with the ring to measure the borehole deformation, and a reference FBG free from mechanical load is introduced to remove the temperature effect. Two simple checks on the test data can be performed to improve the test accuracy. Laboratory and field tests were conducted to validate the accuracy and long-term performance of the sensor. The results show that the sensor is capable of measuring stress in rock with good accuracy, and it performs well over a long period of time in coal mines. The developed sensor provides an approach for the long-term monitoring of stress changes in coal mine rock.
资助项目	National Natural Science Foundation of China[U1806226] ; National Natural Science Foundation of China[U1765108] ; National Natural Science Foundation of China[51991393]
WOS研究方向	Chemistry ; Engineering ; Instruments & Instrumentation
语种	英语
出版者	MDPI
WOS记录号	WOS:000552737900260
内容类型	期刊论文
源URL	[http://119.78.100.198/handle/2S6PX9GI/24583]
专题	中科院武汉岩土力学所
通讯作者	Zhao, Wusheng
作者单位	1.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn, Wuhan 430071, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.Yankuang Grp Co Ltd, Postdoctoral Workstn, Zoucheng 273500, Peoples R China
推荐引用方式 GB/T 7714	Zhao, Wusheng,Zhong, Kun,Chen, Weizhong. A Fiber Bragg Grating Borehole Deformation Sensor for Stress Measurement in Coal Mine Rock[J]. SENSORS,2020,20(11):15.
APA	Zhao, Wusheng,Zhong, Kun,&Chen, Weizhong.(2020).A Fiber Bragg Grating Borehole Deformation Sensor for Stress Measurement in Coal Mine Rock.SENSORS,20(11),15.
MLA	Zhao, Wusheng,et al."A Fiber Bragg Grating Borehole Deformation Sensor for Stress Measurement in Coal Mine Rock".SENSORS 20.11(2020):15.