Imperial College London
Alternate

Emeritus Professor Howard Wheater

Faculty of Engineering, Department of Civil and Environmental Engineering

Emeritus Professor in Civil and Environmental Engineering
 
 
 
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Contact

 

+44 (0)20 7594 6066h.wheater CV

 
 
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Assistant

 

Miss Judith Barritt +44 (0)20 7594 5967

 
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Location

 

229Skempton BuildingSouth Kensington Campus

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Summary

 

Publications

Citation

BibTex format

@article{Hardisty:2003,
author = {Hardisty, PE and Wheater, HS and Birks, D and Dottridge, J},
journal = {Q J ENG GEOL HYDROGE},
pages = {343--354},
title = {Characterization of LNAPL in fractured rock},
url = {http://dx.doi.org/10.1144/1470-9236/03-019},
volume = {36},
year = {2003}
}
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RIS format (EndNote, RefMan)

TY  - JOUR
AB  - Behaviour of light non-aqueous phase liquids (LNAPLs) within a fractured rock mass is a function of the properties of the immiscible fluid, the fracture network, rock matrix properties, and the groundwater regime. LNAPL behaves differently in rock with open fractures than it does in porous media. Relatively small volumes of LNAPL within vertical or subvertical fractures can produce significant LNAPL pressure heads, resulting in LNAPL penetration into the saturated zone. Penetration can be significantly deeper than predicted by porous medium models. Groundwater surface fluctuations can cause lateral LNAPL migration, even up-gradient to natural gradients. Characterization of LNAPL-contaminated fractured rock masses must take into account these fundamental differences in behaviour. Site investigation should focus on determination of fracture network and rock matrix properties, understanding of groundwater surface fluctuation dynamics, and consideration of spatial LNAPL distribution. A combination of techniques, many not used in porous medium investigations, but can used to develop a detailed conceptual model. These include coring, angled holes, digital borehole imaging, and fracture casting for aperture determination. The data provide information on LNAPL occurrence and behaviour, allow LNAPL spill volume to be estimated, indicate future movement, and ultimately allow for more effective and economic remedial decision making.
AU  - Hardisty,PE
AU  - Wheater,HS
AU  - Birks,D
AU  - Dottridge,J
EP  - 354
PY  - 2003///
SN  - 1470-9236
SP  - 343
TI  - Characterization of LNAPL in fractured rock
T2  - Q J ENG GEOL HYDROGE
UR  - http://dx.doi.org/10.1144/1470-9236/03-019
VL  - 36
ER  -
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