Tunnel excavation in low permeability ground: Effect of anisotropy on excess pore pressure

  • L. M. Guayacán-Carrillo
  • , D. Seyedi
  • , J. Sulem
  • , S. Ghabezloo
  • , A. Noiret
  • , G. Armand

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

Abstract

The pore pressure evolution induced by excavation of drifts is analyzed by means of a fully coupled hydro-mechanical finite element simulation. Special emphasis is given to anisotropic initial stress state and anisotropy of the elastic parameters of the rock. The main goal is to simulate the main trends of the pore pressure evolution with a simple model taking into account the influence of the face advance and the inherent anisotropy of the material. It is shown that depending upon the permeability of the rock and the degree of anisotropy of the material, strong overpressures can be induced before the passage of the face.

Original languageEnglish
Title of host publicationRock Mechanics and Rock Engineering
Subtitle of host publicationFrom the Past to the Future
EditorsHasan Gerçek, Resat Ulusay, Mehmet Ali Hindistan, Ergün Tuncay, Ömer Aydan
PublisherCRC Press/Balkema
Pages463-468
Number of pages6
ISBN (Print)9781138032651, 9781138032651
Publication statusPublished - 1 Jan 2016
Externally publishedYes
EventInternational Symposium on International Society for Rock Mechanics, ISRM 2016 - Cappadocia, Turkey
Duration: 29 Aug 201631 Aug 2016

Publication series

NameRock Mechanics and Rock Engineering: From the Past to the Future
Volume1

Conference

ConferenceInternational Symposium on International Society for Rock Mechanics, ISRM 2016
Country/TerritoryTurkey
CityCappadocia
Period29/08/1631/08/16

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