Quasi-distributed fiber-optic in-situ monitoring technology for large-scale measurement of soil water content and its application

doi:10.1016/j.enggeo.2021.106373

IEECAS OpenIR > 生态环境研究室

	Quasi-distributed fiber-optic in-situ monitoring technology for large-scale measurement of soil water content and its application
	Sun, Meng-Ya 1; Shi, Bin 1; Zhang, Cheng-Cheng 1; Zheng, Xing 1; Guo, Jun-Yi 1; Wang, Yun-Qiang 2; He, Mei-Na 2; Liu, Jie 1
通讯作者	Shi, Bin(shibin@nju.edu.cn)
	2021-12-05
发表期刊	ENGINEERING GEOLOGY
ISSN	0013-7952
卷号	294 页码:12
摘要	Accurate acquisition of in-situ soil water content is of great significance for mastering the water content distribution of unsaturated soil and understanding soil engineering properties. The actively heated fiber-optic (AHFO) method has recently become a research focus because of the capability to realize distributed and real-time measurement of soil water content. However, most reported AHFO systems have been coupled to distributed temperature sensing (DTS) which does not allow for remote measurements with high spatial resolution. In this paper, a new AHFO method based on the quasi-distributed fiber Bragg grating (AHFO-FBG) technique is proposed for the large-scale in-situ measurement of soil water content. An AHFO-FBG in-situ monitoring system is developed which consists of a sensor module, heating module, data acquisition and transmission module, and data processing module. The established system is applied to a loess slope in Yan'an City, Shaanxi Province, China to monitor its water content distribution in real time. The effectiveness of the monitoring system is verified and the water content distribution of the monitored loess slope are analysed. The in-situ measurement results indicate that in the spatial dimension, the water content in the top and bottom of the slope is low, and that near the scarp is high; in the time dimension, the water content in winter is low while that in autumn and spring is high. The monitored results also suggest that soil water evaporation in winter can significantly enhance the spatial distribution difference of soil water content.
关键词	Soil water content Actively heated fiber-optic fiber Bragg grating (AHFO-FBG) method In-situ measurement Monitoring system Water content distribution Neutron scattering method
DOI	10.1016/j.enggeo.2021.106373
关键词[WOS]	THERMAL-CONDUCTIVITY ; LAND RESTORATION ; MOISTURE ; PATTERNS ; SINGLE ; HEAT
收录类别	SCI ; SCI
语种	英语
资助项目	National Natural Science Foundation of China[42030701] ; National Natural Science Foundation of China[41427801] ; Postgraduate Research & Practice Innovation Program of Jiangsu Province[KYCX21_0057]
WOS研究方向	Engineering ; Geology
项目资助者	National Natural Science Foundation of China ; Postgraduate Research & Practice Innovation Program of Jiangsu Province
WOS类目	Engineering, Geological ; Geosciences, Multidisciplinary
WOS记录号	WOS:000703066300005
出版者	ELSEVIER
引用统计	被引频次：13[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.ieecas.cn/handle/361006/17074
专题	生态环境研究室
通讯作者	Shi, Bin
作者单位	1.Nanjing Univ, Sch Earth Sci & Engn, Nanjing 210023, Peoples R China 2.Chinese Acad Sci, Inst Earth Environm, State Key Lab Loess & Quaternary Geol, Xian 710061, Peoples R China
推荐引用方式 GB/T 7714	Sun, Meng-Ya,Shi, Bin,Zhang, Cheng-Cheng,et al. Quasi-distributed fiber-optic in-situ monitoring technology for large-scale measurement of soil water content and its application[J]. ENGINEERING GEOLOGY,2021,294:12.
APA	Sun, Meng-Ya.,Shi, Bin.,Zhang, Cheng-Cheng.,Zheng, Xing.,Guo, Jun-Yi.,...&Liu, Jie.(2021).Quasi-distributed fiber-optic in-situ monitoring technology for large-scale measurement of soil water content and its application.ENGINEERING GEOLOGY,294,12.
MLA	Sun, Meng-Ya,et al."Quasi-distributed fiber-optic in-situ monitoring technology for large-scale measurement of soil water content and its application".ENGINEERING GEOLOGY 294(2021):12.