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| Titel |
Soil geohazard mapping for improved asset management of UK local roads |
| VerfasserIn |
O. G. Pritchard, S. H. Hallett, T. S. Farewell |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1561-8633
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| Digitales Dokument |
URL |
| Erschienen |
In: Natural Hazards and Earth System Sciences ; 15, no. 9 ; Nr. 15, no. 9 (2015-09-18), S.2079-2090 |
| Datensatznummer |
250119684
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| Publikation (Nr.) |
 copernicus.org/nhess-15-2079-2015.pdf |
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| Zusammenfassung |
Unclassified roads comprise 60 % of the road network in the United Kingdom
(UK). The resilience of this locally important network is declining. It is
considered by the Institution of Civil Engineers to be "at risk" and is
ranked 26th in the world. Many factors contribute to the degradation
and ultimate failure of particular road sections. However, several UK local
authorities have identified that in drought conditions, road sections
founded upon shrink–swell susceptible clay soils undergo significant
deterioration compared with sections on non-susceptible soils. This arises
from the local road network having little, if any, structural foundations.
Consequently, droughts in East Anglia have resulted in millions of pounds of
damage, leading authorities to seek emergency governmental funding.
This paper assesses the use of soil-related geohazard assessments in
providing soil-informed maintenance strategies for the asset management of
the locally important road network of the UK. A case study draws upon the UK
administrative county of Lincolnshire, where road assessment data have been
analysed against mapped clay-subsidence risk. This reveals a statistically
significant relationship between road condition and susceptible clay soils.
Furthermore, incorporation of UKCP09 future climate projections within the
geohazard models has highlighted roads likely to be at future risk of
clay-related subsidence. |
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