Authors: Holliday, JK; Clark, AR; Fort, DS; Gillarduzzi, A; Bomont, S


DOI https://doi.org/10.36487/ACG_rep/1308_68_Holliday

Cite As:
Holliday, JK, Clark, AR, Fort, DS, Gillarduzzi, A & Bomont, S 2013, 'Stabilisation of landslides using gravity fed siphon and electro-pneumatic pumped wells: two examples of slope stabilisation projects from the United Kingdom and Czech Republic', in PM Dight (ed.), Slope Stability 2013: Proceedings of the 2013 International Symposium on Slope Stability in Open Pit Mining and Civil Engineering, Australian Centre for Geomechanics, Perth, pp. 981-994, https://doi.org/10.36487/ACG_rep/1308_68_Holliday

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Abstract:
The rise of groundwater in response to extreme weather events is having a major impact on slope stability and the consequential disruption to infrastructure services and associated costs related to their repair is significant. Climate change studies are predicting increased frequency and duration of extreme weather events. Case histories have demonstrated the link between prolonged rainfall events, rising groundwater levels and increased frequency of slope instability. The stability of slopes can be improved if groundwater can be controlled and this is most commonly achieved through the use of drainage measures. An innovative drainage system that uses siphon drain and electro-pneumatic pump technology has been employed in Europe since 1986 using drains and lines of wells to lower and maintain groundwater levels within slopes. Two examples of projects using siphon and electro-pneumatic drains to control slope stability are presented. The first example is a coast protection scheme constructed in 2004 at Castlehaven on the Isle of Wight in the United Kingdom. The second example involves landslide problems affecting remediation works to slopes undertaken in 2009 at a former open cast brown coal mine at the Most Ležáky site in the Czech Republic.

References:
Bomont, S., Fort, D.S. and Holliday, J.K. (2005) Two applications for deep drainage using siphon and electro-pneumatic drains. Slope works for Castlehaven Coast Protection Scheme, Isle of Wight (UK) and slope stabilisation for the Railways Agency, France, in Proceedings International Conference on Landslide Risk Management and 18th Annual Vancouver Geotechnical Society Symposium, 31 May–4 June 2005, Vancouver, Canada.
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