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SUMMARY:Tunnelling Under Cities\, Advances in Research and Practice - Prof
 essor Robert Mair\, Department of Engineering\, University of Cambridge
DTSTART:20140505T183000Z
DTEND:20140505T200000Z
UID:TALK48250@talks.cam.ac.uk
CONTACT:Dr Nigel Bennee
DESCRIPTION:Urban congestion is a serious problem in many cities\, so the 
 creation of underground space\, and in particular the development of under
 ground transport\, is environmentally essential for our future megacities.
  \n\nHow can tunnels be built in ground sometimes as soft as toothpaste? W
 hat can go wrong? Will buildings above be affected by subsidence? What els
 e is underground already that might get in the way or be adversely affecte
 d? \n\nGeotechnical engineering - the application of the science of soil m
 echanics and engineering geology - plays a key role in answering these que
 stions. \n\nThe talk will highlight the critical importance of geology\, a
 nd the development and application of the latest underground construction 
 techniques. Examples of projects from around the world will demonstrate th
 e size\, technical challenges and complexity of modern underground constru
 ction. Some research advances and innovations at Cambridge will be describ
 ed. \n\nProtection from subsidence is critical and new ways to evaluate ho
 w buildings may be affected by tunnelling and deep excavations will be exp
 lained\; innovative protective techniques will also be described.  \n\nNov
 el techniques for monitoring construction using fibre optic technology and
  wireless sensor networks will be presented\, illustrated by some recent c
 ase histories.
LOCATION:Wolfson Lecture Theatre\, Churchill College\, Storey's Way\, Camb
 ridge
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