Implementation of a fibre optic monitoring system in a roadside slope in Hong Kong

H. H. Zhu, A. N.L. Ho, Jianhua Yin, H. F. Pei, C. Y. Hong

Research output: Chapter in book / Conference proceedingConference article published in proceeding or bookAcademic researchpeer-review

Abstract

Conventional geotechnical instruments for slope monitoring have limitations such as low accuracy, poor reliability, difficulties in mounting sensors, etc. This paper presents an innovative slope monitoring system based on fibre Bragg grating (FBG) sensing technology. This system is designed to perform accurate monitoring of slope movements, strains and stresses along soil nails and other slope reinforcement elements. A trial of this fibre optic monitoring system has been successfully conducted on a roadside slope in Hong Kong. The FBG sensors were installed on a soil nail, a solider H-pile, and an in-place inclinometer. The paper shows the layout and arrangement of the instruments as well as the installation procedures adopted. The results from fibre optic sensors are presented and analyzed. This trial has demonstrated the good potential of the fibre optic slope monitoring system for use in long-term monitoring of slope performance.
Original languageEnglish
Title of host publication14th Asian Regional Conference on Soil Mechanics and Geotechnical Engineering
Publication statusPublished - 1 Dec 2011
Event14th Asian Regional Conference on Soil Mechanics and Geotechnical Engineering, ARC 2011 - Hong Kong, Hong Kong
Duration: 23 May 201127 May 2011

Conference

Conference14th Asian Regional Conference on Soil Mechanics and Geotechnical Engineering, ARC 2011
Country/TerritoryHong Kong
CityHong Kong
Period23/05/1127/05/11

ASJC Scopus subject areas

  • Soil Science
  • Geotechnical Engineering and Engineering Geology

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