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Excavation plan and preliminary support design of an underground control room using 3D analysis in soft and weathered rocks

Vahedi Fard, F ; Sharif University of Technology | 2006

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  1. Type of Document: Article
  2. DOI: 10.1201/9781439833766.ch52
  3. Publisher: Taylor and Francis/ Balkema , 2006
  4. Abstract:
  5. In this paper, proper and safe planning of excavation method and design of support system in very weak rocks with case study of control room of Silveh dam are discussed. Silveh earth-storage dam, with 102 m height; is under construction in North-West of Iran. Due to numerous and various tectonic occurrences, the area of dam site is known as a high activity zone of Iran. In purposed location of control room, bedrock contains mostly weathered and crushed Shale and Schist. 60 m overburden and finite aquifers are another specific concern of this project. In this paper by using 3D finite element modeling, different stages of excavation and support system installation have been analyzed for the explained control room. In this manner, stage excavation method (in accordance with NATM) is proposed. Finally, it is shown that allowable factor of safety is achievable by careful observing of all components of proposed support system. Plaxis 3D Tunnel software is applied for all of numerical modeling and analysis. © 2006 Taylor & Francis Group
  6. Keywords:
  7. Aquifers ; Design ; Geotechnical engineering ; Hydrogeology ; Safety factor ; Tunneling (excavation) ; 3D finite element model ; Different stages ; Excavation and support ; Excavation methods ; Factor of safety ; Numerical modeling and analysis ; Support systems ; Weathered rocks ; Numerical methods
  8. Source: 6th European Conference on Numerical Methods in Geotechnical Engineering - Numerical Methods in Geotechnical Engineering, Graz, 6 September 2006 through 8 September 2006 ; 2006 , Pages 359-365 ; 0415408229 (ISBN); 9780415408226 (ISBN)
  9. URL: https://www.researchgate.net/publication/290285945_Excavation_plan_and_preliminary_support_design_of_an_underground_control_room_using_3D_analysis_in_soft_and_weathered_rocks