Validation of Bare FBG Sensors in Monitoring Compressive Rock Mass Deformation

Hongkui Gong, Mehmet S. Kizil, Zhongwei Chen, Saiied M. Aminossadati

科研成果: 书/报告/会议事项章节会议稿件同行评审

3 引用 (Scopus)

摘要

Geotechnical stability is a major concern for the long-term safety and integrity in underground coal mines.The major issues with the current roof stability monitoring system in underground coal mines include lackof systematic real time data recording scheme and using electrical sensing components that are notintrinsically safe in underground explosive workplace. Although an advanced system based on fibre opticsensing (FOS) technologies have increasingly drawn attention by mining industry, their applications in coalmines are still challenged by a number of factors, such as the survivability in large strain range, appropriatefibre encapsulation and installation methods and minimisation of measurement errors due to the straintransfer loss. This paper presents the results of preliminary experiment in developing fibre optic based roofstability monitoring system forunderground coal mines, including the validation of surface mounting bareFBGs in rock mass compressive test. The accuracy of the bare FBG sensors in measuring compressivestrain for rock mass are validated against the electrical strain gauges and linear variable differentialtransducer (LVDT). Using the stress-strain curve and Young's modulus of the standard samples as areference, the experiment results show that the bare FBG and electrical strain gauges can provide accurateand reliable compressive strain measurements for material with different mechanical properties.

源语言英语
主期刊名Proceedings - 2017 2nd International Conference of Fibre-Optic and Photonic Sensors for Industrial and Safety Applications, OFSIS 2017
出版商Institute of Electrical and Electronics Engineers Inc.
85-90
页数6
ISBN(电子版)9781509050543
DOI
出版状态已出版 - 18 7月 2017
已对外发布
活动2nd International Conference of Fibre-Optic and Photonic Sensors for Industrial and Safety Applications, OFSIS 2017 - Brisbane, 澳大利亚
期限: 8 1月 201710 1月 2017

出版系列

姓名Proceedings - 2017 2nd International Conference of Fibre-Optic and Photonic Sensors for Industrial and Safety Applications, OFSIS 2017

会议

会议2nd International Conference of Fibre-Optic and Photonic Sensors for Industrial and Safety Applications, OFSIS 2017
国家/地区澳大利亚
Brisbane
时期8/01/1710/01/17

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