Geotechnical, structural and geodetic measurements for conventional tunnelling hazards in urban areas – The case of Niayesh road tunnel project

Ghorbani, M.; Sharifzadeh, Mostafa; Yasrobi, S. Shahaboddin; Daiyan, M.

doi:10.1016/j.tust.2012.02.009

Cited by 48 publications

(24 citation statements)

References 3 publications

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“…For the schemes a and b 2 , the latter has a higher probability of 2 than scheme a, and for risk conservatives, the risk of choosing a is relatively small. For the schemes a and b 3 , the latter is more likely to take 4, and does not take the risk of value 2, so it is more reasonable to choose scheme b 3 . Here, the EU-E model is invalid, but the variances of a, For decision-makers with a risk-neutral view ( 0.5  = ), since they do not have a clear tendency toward risk, it is difficult to make judgments for the above situations.…”

Section: Scheme Selection Under Multi-source Attributesmentioning

confidence: 99%

“…Their benefits cannot be over-rated and the world is witnessing an ever-increasing need for tunnels [1,2]. Since geotechnical media are materials that can change instantly and significantly from one point to the next [3], and tunnels are large-scale complex systems, various uncertainties are involved in the whole construction period. So, the risk will also be accompanied by the entire construction cycle, which will affect all parties involved, and even those not directly involved, in such projects [4,5].…”

Section: Introductionmentioning

confidence: 99%

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Entropy-Based Risk Control of Geological Disasters in Mountain Tunnels Under Uncertain Environments

Xia¹,

Xiong²,

Hao³

et al. 2018

Preprint

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Uncertainty is the main source of risk of geological hazards in tunnel engineering. Uncertainty information not only affects the accuracy of evaluation results, but also affects the reliability of decision-making schemes. Therefore, it is necessary to evaluate and control the impact of uncertainty on risk. In this study, the problems in existing entropy-hazard model such as inefficient decision-making and failure of decision-making are analysed, and an improved uncertainty evaluation and control process are proposed. Then the tolerance cost, the key factor in the decision-making model, is also discussed. It is considered that the amount of change in risk value (R 1 ) can better reflect the psychological behaviour of decision-makers. Thirdly, common attribute decision models, such as the expected utility-entropy model, are analysed, and then the viewpoint of different types of decision-making issues that require different decision methods is proposed. The well-known Allais paradox is explained by the proposed methods. Finally, the engineering application results show that the uncertainty control idea proposed here is accurate and effective. This research indicates a direction for further research into uncertainty, and risk control, issues affecting underground engineering works.

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Section: Scheme Selection Under Multi-source Attributesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Entropy-Based Risk Control of Geological Disasters in Mountain Tunnels Under Uncertain Environments

Xia¹,

Xiong²,

Hao³

et al. 2018

Preprint

View full text Add to dashboard Cite

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“…The optimum value of the part of radial deformation of the rock mass, which takes place before the installation of the support itself, can significantly lower the load that is applied to the support. When the installation of the support takes too long, a rapid deformation of the excavation can take place, which can lead to the collapse of the whole stope [13][14][15][16][17]. One of the possible ways of extending the classic method of monitoring the load of tunnels is with optical fibres.…”

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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“…In addition, considerable apprehension remains about the inclusion of gas systems in utility tunnels. However, previous studies relating to utility tunnels have evidenced concern by utility companies and others as to compatibility among utilities in a tunnel environment; the hazards of gas leaks and explosions; water pipe leaks and rupture; hazards to workmen from unfamiliar systems; as well as security issues (Canto-Perello & Curiel-Esparza, 2003;Curiel-Esparza & Canto-Perello, 2005, Abdul Salam, 2007Zhou et al 2009;Fouladgar et al, 2012;Ghorbani et al, 2012). The technical feasibility of the utility tunnel concept depends on the adequacy of the technology for the solution of problems expected to be encountered in the construction of utility tunnels, the installation of utility systems therein, and the operation and maintenance of the installed utilities (CurielEsparza et al, 2004).…”

Section: Introductionmentioning

confidence: 99%

Criticality and threat analysis on utility tunnels for planning security policies of utilities in urban underground space

Canto-Perello

Curiel-Esparza

Calvo

2013

Expert Systems with Applications

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ElsevierCantó Perelló, J.; Curiel Esparza, J.; Calvo Peña, V. (2013). Criticality and threat analysis on utility tunnels for planning security policies of utilities in urban underground space. Expert Systems with Applications. 40 (11) AbstractA utility tunnel is defined as an underground structure containing one or more utilities, permitting the installation, maintenance and removal of the systems without the necessity of making street cuts or excavations. These underground facilities contain all essential utilities serving large urban areas collected together in a tunnel; therefore they are an inviting target for sabotage or vandalism. This paper proposes an expert system combining color-coded scales, Delphi and AHP methods to analyze criticality and threats on utility tunnels to support planning of security policies for utilities in urban subsurface.

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Geotechnical, structural and geodetic measurements for conventional tunnelling hazards in urban areas – The case of Niayesh road tunnel project

Cited by 48 publications

References 3 publications

Entropy-Based Risk Control of Geological Disasters in Mountain Tunnels Under Uncertain Environments

Entropy-Based Risk Control of Geological Disasters in Mountain Tunnels Under Uncertain Environments

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

Criticality and threat analysis on utility tunnels for planning security policies of utilities in urban underground space

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