Wet winter pore pressures in railway embankments

Briggs, K.M., Smethurst, J.A., Powrie, W. and O'Brien, A.S. (2013) Wet winter pore pressures in railway embankments Proceedings of the ICE - Geotechnical Engineering, 166, (GE5), pp. 451-465. (doi:10.1680/geng.11.00106).


Full text not available from this repository.


This paper demonstrates the influence of extreme wet winter weather on pore water pressures within clay fill railway embankments, using field monitoring data and numerical modelling. Piezometer readings taken across the London Underground Ltd network following the wet winter of 2000/2001 were examined, and showed occurrences of hydrostatic pore water pressure within embankments but also many readings below this. A correlation was found between the maximum pore water pressures and the permeability of the embankment foundation soil, with high permeability foundation soils (of Chalk or river terrace deposits) providing underdrainage and maintaining low pore water pressures within the overlying clay embankment fill. Numerical modelling of transient water flow in response to a climate boundary condition supports this conclusion and has been used to demonstrate the influence of clay fill and underlying foundation permeability on transient pore water pressures during extreme (c. 1 in 100 year) and intermediate (c. 1 in 10 year) wet winter rainfall. For clay founded embankments, extreme wet winter conditions increased pore water pressures significantly compared with an intermediate winter, while for embankments underlain by a permeable stratum pore water pressures were less sensitive to the extreme winter rainfall.

Item Type: Article
Digital Object Identifier (DOI): doi:10.1680/geng.11.00106
ISSNs: 1353-2618 (print)
Keywords: embankments, weather, groundwater
Organisations: Infrastructure Group
ePrint ID: 175815
Date :
Date Event
20 February 2013e-pub ahead of print
30 September 2013Published
Date Deposited: 28 Feb 2011 11:19
Last Modified: 18 Apr 2017 02:51
Further Information:Google Scholar
URI: http://eprints.soton.ac.uk/id/eprint/175815

Actions (login required)

View Item View Item