Photonic Sensors

, Volume 3, Issue 2, pp 144–158 | Cite as

Continuous monitoring of mining induced strain in a road pavement using fiber Bragg grating sensors

  • Giorgio Nosenzo
  • B. E. Whelan
  • M. Brunton
  • Daryl Kay
  • Henk Buys
Open Access
Regular

Abstract

This paper describes the application of fiber Bragg grating (FBG) based sensors for monitoring road pavement strains caused by mining induced ground subsidence as a result of underground longwall coal mining beneath a major highway in New South Wales, Australia. After a lengthy planning period, the risks to the highway pavement were successfully managed by the highway authority and the mining company through a technical committee. The technical committee comprised representatives of the mining company, the highway authority and specialists in the fields of pavement engineering, geotechnical engineering and subsidence. An important component of the management strategy is the installation of a total of 840 strain and temperature sensors in the highway pavement using FBG arrays encapsulated in glass-fiber composite cables. The sensors and associated demodulation equipment provide continuous strain measurements along the pavement, enabling on-going monitoring of the effects of mining subsidence on the pavement and timely implementation of planned mitigation and response measures to ensure the safety and serviceability of the highway throughout the mining period.

Keywords

Sensing monitoring fiber Bragg grating pavement strain distributed sensors 

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Copyright information

© The Author(s) 2012

This article is published under license to BioMed Central Ltd. Open Access This article is distributed under the terms of the Creative Commons Attribution License which permits any use, distribution, and reproduction in any medium, provided the original author(s) and source are credited.

Authors and Affiliations

  • Giorgio Nosenzo
    • 1
  • B. E. Whelan
    • 2
  • M. Brunton
    • 2
  • Daryl Kay
    • 3
  • Henk Buys
    • 4
  1. 1.Monitor Optics Systems LimitedTerenure Dublin 6Ireland
  2. 2.Monitor Optics Systems Pty LtdChatswoodAustralia
  3. 3.Mine Subsidence Engineering ConsultantsChatswoodAustralia
  4. 4.AECOMSydneyAustralia

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