Applying the observational approach for tunnel design

Juan M. Davila Mendez, Alexander Kluckner, Wulf Schubert

Research output: Chapter in Book/Report/Conference proceedingConference paperpeer-review

Abstract

The inherent uncertainties in the ground model and influencing factors, in most cases, do not
allow a reliable direct design of a tunnel. Empirical tunnel design methods do not allow proofing stability or serviceability, thus are not acceptable according to common understanding.
To allow for construction of safe and economical tunnels, the uncertainties have to be dealt with by observing the behaviour of the structure, and adjust construction measures to the real ground conditions and behaviours (“observational method”).
After characterizing the ground, potential hazards are identified, the possible range of behaviours is assessed and appropriate construction measures to the expected behaviours are assigned. A monitoring plan needs to be established together with a safety management plan including contingency measures for inacceptable predicted behaviour deviations.
The paper with the help of a few worked examples illustrates the influence of the rock mass structure and fault zones on the system behaviour.
Original languageEnglish
Title of host publicationRock Characterisation, Modelling and Engineering Design Methods
Subtitle of host publication papers presented at the SINOROCK 2013 Symposium ... held at Tongji University, Shanghai, China, on 18 - 20 June, 2013
Place of PublicationLondon
PublisherTaylor & Francis Group
Pages691-696
ISBN (Print)978-1-138-00057-5
Publication statusPublished - 2013
Event3rd ISRM SINOROCK Symposium - Tongji University, Shanghai, China
Duration: 17 Jun 201321 Jun 2013

Conference

Conference3rd ISRM SINOROCK Symposium
Country/TerritoryChina
CityShanghai
Period17/06/1321/06/13

Fields of Expertise

  • Sonstiges

Treatment code (Nähere Zuordnung)

  • Theoretical

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