Determination of tunnel face stabilizing pressure using numerical and analytical methods

Rybak, A. Herbut J.

doi:10.1201/9781315393827-130

Cited by 1 publication

(1 citation statement)

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“…Monitoring of underground workings can be basically divided into underground monitoring on the site of construction and surface monitoring. The objectives of the monitoring are based on the basic hypotheses for system transformation of "rock environment -the support of the underground workings" [7,8]. By building the underground workings, the primary balance is broken leading to the redistribution of stress, and the concentration of stress behind the excavation reaches a value that is several times higher than the primary stress.…”

Section: Introductionmentioning

confidence: 99%

Analysis of the highway tunnels monitoring using an optical fiber implemented into primary lining

Fajkus

Nedoma

Mec

et al. 2017

Journal of Electrical Engineering

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This article is focused on the analysis of the use of distributed fibre-optic technology for security monitoring of road tunnel and motorway tunnel structural load. The authors focused on the measurements of deformation utilizing Brillouin Time Domain Reflectometry (BOTDR). The principle is based on the measurement of stimulated Brillouin scattering. The article describes and analyses real measurements within a period of 5 months, which were carried out during the tunnelling and the whole process of building a new tunnel inŽilina, Slovakia. The performed experimental measurements were carried out using a standard optic telecommunication cable with water-absorbing aramid yarns and a jacket with a diameter of 4.2 mm. The contribution of this article lies in the introductory analysis of the implementation and use of the fibre-optic technology for security monitoring of road tunnel and motorway tunnel structural load.K e y w o r d s: Brillouin time domain reflectometry (BOTDR), fibre-optic sensor

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Section: Introductionmentioning

confidence: 99%