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portrait of Dr Sam Divall

Dr Sam Divall

Lecturer in Geotechnical Engineering

School of Mathematics, Computer Science & Engineering, Civil Engineering

Contact Information

Contact

Visit Sam Divall

CG04, Tait Building

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Postal Address

City, University of London
Northampton Square
London
EC1V 0HB
United Kingdom

About

Overview

Dr Divall was appointed to the role of Lecturer in Geotechnical Engineering within the School of Mathematics, Computer Science & Engineering in 2015.

Dr Divall undertook his doctoral within the internationally recognised Geotechnical Engineering Research Centre investigating the ground behaviour of twin-tunnels in clay . A year later following the successful award from the Leverhulme Trust by colleagues within the Research Centre for Multi-scale Geotechnical Engineering; Dr Divall worked as a Research Fellow on the project 'Interaction between new and existing underground infrastructure'.

Dr Divall has been awarded the Civil Engineering Department Teaching Award (2015), the ICE QUEST Travel Award (2013), the ISSMGE Foundation Award (2013) and had the Winning Presentation at the 12th BGA Young Geotechnical Engineers’ Symposium (2012).

He is currently an invited member of the ISSMGE technical committee TC104 for Physical Modelling in Geotechnics, a graduate member of both the BGA and ICE, in addition to being a Fellow of the Higher Education Academy.

Qualifications

  1. PhD in Geotechnical Engineering, City, University of London, United Kingdom, Oct 2009 – May 2013
  2. MEng (Hons) in Civil Engineering, City, University of London, United Kingdom, Sep 2005 – May 2009

Postgraduate Training

  1. Postgraduate Certificate in Academic Practice (Technology Enabled), City, University of London, United Kingdom, Oct 2015

Employment

  1. Lecturer in Geotechnical Engineering, City, University of London, Oct 2015 – present
  2. Geotechnical Research Fellow, City, University of London, Oct 2013 – Sep 2015
  3. Academic Fellow in Civil Engineering, City, University of London, Oct 2012 – Sep 2013
  4. Visiting Lecturer, City, University of London, 2009 – 2012

Awards

  1. City, University of London, Civil Engineering Department (2015) Teaching Award
  2. The ICE QUEST (2013) Travel Award
  3. International Society for Soil Mechanics and Geotechnical Engineering (2013) The ISSMGE Foundation Award
  4. 12th BGA Young Geotechnical Engineers’ Symposium (2012) Winning Presentation

Research

Research Interests

Dr Divall’s research interests can be summarised into three categories:
- interaction of geotechnical structures in the congested underground space
- prediction and control of movements resulting from geotechnical construction processes
- geotechnical physical modelling techniques.

Dr Divall’s doctoral research utilised physical model testing using a geotechnical centrifuge to investigate the distribution of ground movements. Geotechnical centrifuge modelling allows novel and complex geotechnical events to be investigated within a well-controlled and repeatable environment in the laboratory. Dr Divall’s research has mainly focused on physical modelling tests into soil of similar stress history to those found in London. The role of Geotechnical Research Fellow included undertaking research supported by The Leverhulme Trust into the construction of shafts in congested subsurface urban environments.

Publications

  1. Divall, S., Goodey, R.J. and Stallebrass, S.E. (2017). Twin-tunnelling-induced changes to clay stiffness. Géotechnique, 67(10), pp. 906–913. doi:10.1680/jgeot.sip17.P.151.

Conference Papers and Proceedings (8)

  1. Divall, S., Taylor, R.N., Stallebrass, S.E. and Goodey, R.J. (2017). Predictions of changes in pore-water pressure around tunnels in clay. 9th International Symposium on Geotechnical Aspects of Underground Construction in Soft Ground 4-5 April, Sao Paulo, Brazil.
  2. Divall, S. and Goodey, R.J. (2016). An apparatus for centrifuge modelling of a shaft construction in clay. 3rd European Conference on Physical Modelling in Geotechnics (Eurofuge 2016) 1-3 June, Ifsttar, Nantes, France.
  3. Nadimi, S., Divall, S., Fonseca, J., Goodey, R.J. and Taylor, R.N. (2016). An addendum for particle image velocimetry in centrifuge modelling. Eurofuge 2016: 3rd European Conference on Physical Modelling in Geotechnics 1-3 June, IFSTTAR, Nantes, France.
  4. Le, B.T., Divall, S. and Taylor, R.N. (2015). The effect of a forepole umbrella system on the stability of a tunnel face in clay. 16th European Conference on Soil Mechanics and Geotechnical Engineering 13-17 September, Edinburgh, Scotland.
  5. Divall, S., Goodey, R.J. and Taylor, R.N. (2014). The influence of a time delay between sequential tunnel constructions. 8th International Conference on Physical Modelling in Geotechnics 14-17 January, University of Western Australia, Australia.
  6. Divall, S., Goodey, R.J. and Taylor, R.N. (2012). Ground movements generated by sequential Twin-tunnelling in over-consolidated clay. 2nd European Conference on Physical Modelling in Geotechnics 23-24 April, Delft University of Technology, Netherlands.
  7. McNamara, A.M., Divall, S., Goodey, R.J., Gorasia, R.J., Halai, H., Rose, A.V., Stallebrass, S.E., Taylor, R.N. and Xu, M. (2012). The London Geotechnical Centrifuge Centre at City University London. 2nd European Conference on Physical Modelling in Geotechnics 23-24 April, Delft University of Technology, Netherlands.
  8. Divall, S. (2010). Design and development of instrumentation and modelling equipment for simulating multi-tunnel volume loss in clay. 11th BGA Young Geotechnical Engineers' Symposium 6-8 July, University of Bristol, Bristol, UK.

Internet Publication

  1. Divall, S. (2013). Major project motivator. New Civil Engineer.

Journal Articles (6)

  1. Divall, S., Goodey, R.J. and Stallebrass, S.E. (2017). Twin-tunnelling-induced changes to clay stiffness. Géotechnique, 67(10), pp. 906–913. doi:10.1680/jgeot.sip17.P.151.
  2. Divall, S., Taylor, R.N. and Xu, M. (2016). Centrifuge modelling of tunnelling with forepoling. International Journal of Physical Modelling in Geotechnics, 16(2), pp. 83–95. doi:10.1680/jphmg.15.00019.
  3. Divall, S. and Goodey, R.J. (2015). Twin-tunnelling-induced ground movements in clay. Proceedings of the ICE - Geotechnical Engineering, 168(3), pp. 247–256. doi:10.1680/geng.14.00054.
  4. Divall, S. and Goodey, R.J. (2012). Apparatus for centrifuge modelling of twin-tunnel construction. International Journal of Physical Modelling in Geotechnics, 12(3), pp. 102–111. doi:10.1680/ijpmg.11.00014.
  5. Divall, S. and Goodey, R.J. (2012). Novel apparatus for generating ground movements around sequential twin tunnels in over-consolidated clay. Online publication by Proceedings of the ICE – Geotechnical Engineering pp. 10–11.

    [publisher’s website]

  6. Li, Y., Chen, X., Divall, S. and Zhang, X. A study into the behaviour of the formation level of an excavation under different unloading patterns in soft deposits. Arabian Journal of Geosciences, 10(19) . doi:10.1007/s12517-017-3227-2.

Thesis/Dissertation

  1. Divall, S. Ground movements associated with twin-tunnel construction in clay. (PhD Thesis)

Other

  1. Divall, S. (2010). “London 2012: Lessons Learned” BGA Evening Meeting Report.

Education

Educational Leadership

Deputy Programme Director, MSc in Temporary Works & Construction Method Engineering
Module Leader, CV3408 Engineering Management
Module Leader, EPM614 Geotechnical Temporary Works

Modules Taught

ET1090 Design I
EX1010 Mathematics
CV2405 Design and Construction
CV3408 Engineering Management
CVM301 Geotechnical Analysis
CVM412/CV3409 Major Project
EPM614 Geotechical Temporary Works

Major Project Students

Mohammed Alkhorsan - Influence of permeability on the long-term ground movements in clay (16/17)
Henry Kirkbride - Shear box tests on ribbed piles for increased capacity (16/17)
Eric Ritchie - Development of layered models for centrifuge modelling (16/17)
Ali Taha - Shaft-induced ground movements in clay (16/17)
Craig Ihezie - Modelling of tunnelling with embedded forepoles (16/17)
Hassan Butt - Centrifuge modelling of tunnelling with embedded forepoles (2015/16)
Carlota Requena - Centrifuge modelling of pore-water pressure generation around a tunnel construction (2015/16)
Sunil Vaghela - Case Histories: The effect of new deep circular and non axisymmetric excavations on existing underground services and structures (2014/15)
Junley Chan - Settlement from the Construction of Shafts in Clay (2013/14)
Rashik Bhanderi - Analysis of the subsurface deformations during a tunnel construction where forepoling has been utilised (2013/14)
Ken Hy - Case Histories: The effect of new tunnels on existing tunnels (2013/14)
Daniel Girmay - Centrifuge testing of twin-tunnelling induced settlements (2012/13)

Other Activities

Events/Conferences (16)

  1. Geotechique Symposium in Print 2017: tunnelling in the urban environment. (Conference) London, UK (2017). Invited speaker.
    Paper: Twin-tunnelling-induced changes to clay stiffnesses
    Author: Divall, S
    Co-authors: Goodey, RJ & Stallebrass, SE
  2. 13th Annual British Geotechnical Association Conference. London, UK (2016).
    Description: (Invited speaker)
  3. 3rd European Conference on Physical Modelling in Geotechnics. IFSTTAR, Nantes, France (2016). Invited speaker.
    Paper: An apparatus for centrifuge modelling of a shaft construction in clay
    Author: Divall, S.
    Co-authors: Goodey, R.J.
    Description: (Reviewer)
  4. 16th European Conference on Soil Mechanics and Geotechnical Engineering. Edinburgh, Scotland (2015).
    Description: (Delegate)
  5. Tunnelling in London: learning lessons from Crossrail. (BGA half day seminar). Imperial College, London (2015).
    Description: (Delegate)
  6. 12th Annual British Geotechnical Association Conference. London, UK (2014).
    Description: (Delegate)
  7. 8th International Conference on Physical Modelling in Geotechnics 2014. Perth, Australia (2014). Invited speaker.
    Paper: The influence of a time delay between sequential tunnel constructions
    Author: Divall, S
    Co-authors: Goodey, R.J.
    Description: (Delegate and Reviewer)
  8. 18th International Conference on Soil Mechanics and Geotechnical Engineering. Paris, France (2013).
    Description: (Invited Speaker)
  9. 11th Annual British Geotechnical Association Conference. London, UK (2013).
    Description: (Delegate)
  10. 10th Annual British Geotechnical Association Conference. London, UK (2012).
    Description: (Invited Speaker)
  11. 12th BGA Young Geotechnical Engineers Symposium. Leeds, UK (2012). Invited speaker.
    Paper: Novel apparatus for generating ground movements around sequential twin tunnels in over-consolidated clay.
    Author: Divall, S.
    Co-authors: Goodey, R.J.
    Description: (Presented Research Paper)
  12. 2nd European Conference on Physical Modelling in Geotechnics. Delft, Netherlands (2012). Invited speaker.
    Paper: Ground movements generated by sequential Twin-tunnelling in over-consolidated clay.
    Author: Divall, S.
    Co-authors: Goodey, R.J.
    Description: (Presented Research Paper)
  13. 9th Annual British Geotechnical Association Conference. London, UK (2011).
    Description: (Delegate)
  14. 11th BGA Young Geotechnical Engineers Symposium. Bristol, UK (2010). Invited speaker.
    Paper: Design and development of instrumentation and modelling equipment for simulating multi-tunnel volume loss in clay
    Author: Divall, S.
    Description: (Presented Research Paper)
  15. 7th International Conference on Physical Modelling in Geotechnics. Zurich, Switzerland (2010).
    Description: (Research Poster Presented)
  16. 8th Annual British Geotechnical Association Conference. London, UK (2010).
    Description: (Presented Research Paper)

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City, University of London

Northampton Square

London EC1V 0HB

United Kingdom

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