Dewatering in a collapsible deeply weathered Birimian phyllite for shaft sinking at Ashanti Goldfields Corporation (GH) Limited

C. Asamoah-Owusu; F. T. Suorineni

Dewatering in a collapsible deeply weathered Birimian phyllite for shaft sinking at Ashanti Goldfields Corporation (GH) Limited

Research output: Contribution to conference › Paper › peer-review

Abstract

The Ashanti Goldfields Corporation (Ghana) Limited is currently undergoing a major expansion programme. Part of this programme is to sink a 6.41m diameter shaft to a depth of 1,037m through 30.5m of water bearing decamposed Birimian phyllites. This paper discusses the plans for the site investigation, the engineering properties of the decamposed phyllite and field permeability tests to establish the bulk permeability of the ground within the vicinity of the shaft. The dewatering well design and the problems encountered during the wells installation and development are also presented.

Original language	English
Pages	1257-1260
Number of pages	4
Publication status	Published - Jan 1 1991
Externally published	Yes
Event	7th International Society for Rock Mechanics and Rock Engineering Congress 1991 - Aachen, Germany Duration: Sep 16 1991 → Sep 20 1991

Conference

Conference	7th International Society for Rock Mechanics and Rock Engineering Congress 1991
Country	Germany
City	Aachen
Period	9/16/91 → 9/20/91

ASJC Scopus subject areas

Geotechnical Engineering and Engineering Geology
Geology

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AB - The Ashanti Goldfields Corporation (Ghana) Limited is currently undergoing a major expansion programme. Part of this programme is to sink a 6.41m diameter shaft to a depth of 1,037m through 30.5m of water bearing decamposed Birimian phyllites. This paper discusses the plans for the site investigation, the engineering properties of the decamposed phyllite and field permeability tests to establish the bulk permeability of the ground within the vicinity of the shaft. The dewatering well design and the problems encountered during the wells installation and development are also presented.

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Dewatering in a collapsible deeply weathered Birimian phyllite for shaft sinking at Ashanti Goldfields Corporation (GH) Limited

Abstract

Conference

ASJC Scopus subject areas

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