Quick
Search: 		  
advanced search
 GSW Home   GeoRef Home   My GSW Alerts   Contact GSW   About GSW   Journals List   Help 
  Quarterly Journal of Engineering Geology & Hydrogeology   Don't get GSW? Talk to your librarian.
JOURNAL HOME HELP CONTACT PUBLISHER SUBSCRIBE ARCHIVE SEARCH TABLE OF CONTENTS
Quarterly Journal of Engineering Geology & Hydrogeology; February 2003; v. 36; no. 1; p. 35-50; DOI: 10.1144/1470-9236/01041
© 2003 Geological Society of London
This Article
Right arrow Figures Only
Right arrow Full Text
Right arrow Full Text (PDF)
Right arrow Alert me when this article is cited
Right arrow Alert me if a correction is posted
Services
Right arrow Email this article to a friend
Right arrow Similar articles in this journal
Right arrow Alert me to new issues of the journal
Right arrow Download to citation manager
Citing Articles
Right arrow Citing Articles via ISI Web of Science (1)
Right arrow Citing Articles via Google Scholar
Google Scholar
Right arrow Articles by Newman, T.G.
Right arrow Articles by Mortimore, R.N.
Right arrow Search for Related Content
GeoRef
Right arrow GeoRef Citation

Original Article

Geological modelling, the observational method and management of ground hazards: Ramsgate Harbour Approach Road Tunnel

T.G. Newman1,*, R.G. Allen2,* and R.N. Mortimore3

1 1Thames Water Utilities Ltd., Geotechnics Group, Ashford Common AWTW, Ashford, Middlesex TW15 1RU, UK
2 2London Bridge Associates, 11 Langley Avenue, Surbiton, Surrey KT6 6QH, UK
3 3The School of The Environment, University of Brighton, Moulsecomb, Brighton BN2 4GJ, UK
4 *Formerly with Taylor Woodrow Construction Ltd.

The Ramsgate Harbour Approach Road Tunnel (RHART) was the first to use the prevaulting tunnelling method in the UK. As with other forms of open-face tunnelling, this method relies on the establishment of a reliable pre-construction geological model and continual verification of this model during construction by use of the observational method.

The route was thought to pass through difficult ground conditions containing a number of natural and artificial hazards which, if not managed properly, would have serious implications for health and safety during construction. This paper illustrates how geological modelling was used for early identification and prediction of such hazards, enabling the planning of contingency procedures. By incorporating the observational method in the construction process the site team was able to assess the accuracy of predictions made from the ground model.

Procedures adopted during construction of theRamsgate Harbour Approach Road Tunnel illustrate how results from continuous in-tunnel and surface observation and monitoring lead to increased confidence in the geological model and the prediction of ground behaviour. Adoption of these procedures reduced the risks posed from unforeseen ground hazards and significantly improved health and safety issues for personnel during construction.

Key Words: chalk • geological hazards • geological models • tunnels • observational methods






JOURNAL HOME HELP CONTACT PUBLISHER SUBSCRIBE ARCHIVE SEARCH TABLE OF CONTENTS
Copyright © 2009 by Geological Society of London