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Stability assessment of the Anderson Road Quarry face, Hong Kong

Norman Woods, Paul Fowler and Sammy Siu
Stability assessment of the Anderson Road Quarry face, Hong Kong
Quarterly Journal of Engineering Geology and Hydrogeology (March 2018) 51 (3): 318-329

Abstract

Anderson Road Quarry (ARQ) originally comprised two small quarries operated by independent companies. However, in 1997, the Hong Kong Government signed a contract with a joint venture between the two companies, KWP Quarry Co. Ltd, to form a platform for future land use and to create a stable and unobtrusive quarry face. On completion, the face was 1.5 km long and 210 m high. Such a massive slope needed to be divided into manageable portions both for registration and the assessment of stability necessary to demonstrate that it meets current safety standards. The assessments of the ARQ face demonstrate the value of an initial walkover prior to detailed mapping for selection of those discontinuities that are directly relevant to stability for subsequent measurement. An on-site review of the results of the kinematic analysis is also essential to confirm that they reflect reality. The identification of loose surface rock and overhangs, the likely results of blasting and inadequate initial scaling, and the identification of seepage, possibly forewarning of potential high cleft water pressures, are all essential observations. The ability of benches, particularly those established with vegetation, to contain falling blocks from above is also a major consideration.


ISSN: 1470-9236
EISSN: 2041-4803
Serial Title: Quarterly Journal of Engineering Geology and Hydrogeology
Serial Volume: 51
Serial Issue: 3
Title: Stability assessment of the Anderson Road Quarry face, Hong Kong
Affiliation: Norman Woods & Associates, China
Pages: 318-329
Published: 20180323
Text Language: English
Publisher: Geological Society of London, London, United Kingdom
References: 4
Accession Number: 2018-032324
Categories: Engineering geology
Document Type: Serial
Bibliographic Level: Analytic
Illustration Description: illus. incl. geol. sketch maps
N22°19'00" - N22°19'00", E114°10'60" - E114°10'60"
Secondary Affiliation: Materials Solution, CHN, ChinaKWP Quarry Company, CHN, China
Country of Publication: United Kingdom
Secondary Affiliation: GeoRef, Copyright 2018, American Geosciences Institute. Reference includes data from GeoScienceWorld, Alexandria, VA, United States. Reference includes data from The Geological Society, London, London, United Kingdom
Update Code: 201817
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