보안·규제 | Cases and Studies of Security & Regulation in Lottery & Gambling | 保安 & 限制
- date : 2015-05-20 01:10|hit : 2615
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- Article] Groundwater control around a large basement
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DocNo of ILP: 6457
Doc. Type: Article
Title: Groundwater control around a large basement
Authors: Ervin, MC; Morgan, JR
Full Name of Authors: Ervin, MC; Morgan, JR
Keywords by Author: excavation; basements; groundwater; clays; settlement; monitoring
Keywords Plus:
Abstract: Melbourne's Crown Casino was constructed on a site bordering the Yarra River and underlain by problem soils of the Coode Island Silt Formation. The development needed to provide two levels of basement car park over the entire site. An innovative approach to groundwater control around the excavation was required to avoid depressurisation of adjoining soils, leading to settlements. Analysis showed a conventional bentonite cut-off wall would still allow depressurisation by lateral flow through the Coode Island Silt during the construction period. The high cost and construction difficulty of a very low permeability wall mitigated against it. An hydraulic wall was proposed in conjunction with a conventional cut-off wall. This comprised a curtain of wick drains surrounding the cut-off wall and charged with water. Control of seepage through an underlying aquifer by a cut-off wall was considered, but a more cost-effective method using recharge by wells was adopted when shown necessary. Monitoring of groundwater pressures around the site showed that the maximum change in water pressure was less than 1 m head, the design criterion. Part way through construction, recharge was initiated when monitoring of the deep aquifer showed pressure reduction attributed to vertical leakage through a basalt tongue.
Cate of OECD: Environmental engineering
Year of Publication: 2001
Business Area: casino
Detail Business: casino
Country: Canada
Study Area: regulation, control
Name of Journal: CANADIAN GEOTECHNICAL JOURNAL
Language: English
Country of Authors: Golder Associates Pty Ltd, Hawthorn, Vic 3122, Australia
Press Adress: Ervin, MC (reprint author), Golder Associates Pty Ltd, 50 Burwood Rd, Hawthorn, Vic 3122, Australia.
Email Address:
Citaion:
Funding:
Lists of Citation: ERVIN MC, 1992, ENGINEERING GEOLOGY OF MELBOURNE, P245; HUTCHISON BG, 1999, P 10 AUSTR TUNN C ME, P35; LANE AP, 1992, ENGINEERING GEOLOGY OF MELBOURNE, P13; MARLONLAMBERT JR, 1981, T I ENG AUSTR CE, V23, P264; MORGAN JR, 1992, ENGINEERING GEOLOGY OF MELBOURNE, P365
Number of Citaion: 5
Publication: NATL RESEARCH COUNCIL CANADA
City of Publication: OTTAWA
Address of Publication: RESEARCH JOURNALS, MONTREAL RD, OTTAWA, ONTARIO K1A 0R6, CANADA
ISSN: 0008-3674
29-Character Source Abbreviation: CAN GEOTECH J
ISO Source Abbreviation: Can. Geotech. J.
Volume: 38
Version: 4
Start of File: 732
End of File: 740
DOI: 10.1139/cgj-38-4-732
Number of Pages: 9
Web of Science Category: Engineering, Geological; Geosciences, Multidisciplinary
Subject Category: Engineering; Geology
Document Delivery Number: 469KB
Unique Article Identifier: WOS:000170812100006
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