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Titolo:
The River Aire slope failure at the St. Aidans Extension Opencast Coal Site, West Yorkshire, United Kingdom
Autore:
Hughes, DB; Clarke, BG;
Indirizzi:
Univ Newcastle Upon Tyne, Dept Civil Engn, Geotech Grp, Newcastle Upon Tyne NE1 7RU, Tyne & Wear, England Univ Newcastle Upon Tyne Newcastle Upon Tyne Tyne & Wear England NE1 7RU
Titolo Testata:
CANADIAN GEOTECHNICAL JOURNAL
fascicolo: 2, volume: 38, anno: 2001,
pagine: 239 - 259
SICI:
0008-3674(200104)38:2<239:TRASFA>2.0.ZU;2-T
Fonte:
ISI
Lingua:
ENG
Keywords:
opencast mining; slope failure; flooding; mining subsidence; ground strains; faulting;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Engineering, Computing & Technology
Citazioni:
26
Recensione:
Indirizzi per estratti:
Indirizzo: Hughes, DB Univ Newcastle Upon Tyne, Dept Civil Engn, Geotech Grp, Drummond Bldg, Newcastle Upon Tyne NE1 7RU, Tyne & Wear, England Univ Newcastle Upon Tyne Drummond Bldg Newcastle Upon Tyne Tyne & Wear England NE1 7RU
Citazione:
D.B. Hughes e B.G. Clarke, "The River Aire slope failure at the St. Aidans Extension Opencast Coal Site, West Yorkshire, United Kingdom", CAN GEOTECH, 38(2), 2001, pp. 239-259

Abstract

The St. Aidans Extension Opencast Coal Site is located in the flood plain of the River Aire 10 km southeast of Leeds, United Kingdom. In March 1988, a massive (600 000 m(3)) slope failure caused a breach of the riverbanks and flood-protection levee, and so connected the river to the opencast void, resulting in flooding of the site. A lake of about 100 ha and up to 70 m depth was created, and coal winning operations had to be suspended for 10 years. The causes of this slope failure included the effects of previous underground coal mining beneath those seams which were being surface mined, resulting in large tensile strains (up to 10 mm/m) in a heavily faulted zone that lay beneath the river bed and an adjacent navigation canal. The fracturing and opening of existing faults and joints greatly increased the permeability beneath the river, which then acted as a source of continuous rechargeas the failed mass moved towards the opencast void. Subsequent remedial and recovery works (costing pound 20 million) have included the rerouting of the River Aire together with the canal, and pumping the flood water from the void and restarting opencast mining operations (tender sum pound 36 million) with a new box cut. This paper details the ground conditions and the history of events and discusses the probable mode of failure.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 14/11/18 alle ore 04:09:14