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Title:

THE STABILITY OF SHALLOW TUNNELS AND UNDERGROUND OPENINGS IN COHESIVE MATERIAL

Accession Number:

00330857

Record Type:

Component

Availability:

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Order URL: http://worldcat.org/issn/00168505

Abstract:

A basic engineering decision to be made in designing a tunnel in soft clay is whether or not the tunnel can be excavated without internal support. The safety of constructing a shallow heading in soft clay can be assessed in terms of the fluid support pressure which may be required to maintain stability. This can be estimated by means of the lower and upper bound theorems of plasticity. The paper considers three different shapes of shallow underground opening relevant to tunnelling and upper and lower bound stability solutions are derived for collapse under undrained conditions. Solutions are also derived for assessment of the risk of blow-out failure caused by excessively high fluid pressures. Conditions are considered under which local collapse can occur, independent of the cover above the tunnel. (Author/TRRL)

Corporate Authors:

Institution of Civil Engineers

One Great George Street, Westminster
London SW1P 3AA United Kingdom

Authors:

Davis, E H
Gunn, M J
Mair, R J
Seneviratne, H N

Pagination:

p. 397-416

Publication Date:

1980-12

Serial:

GEOTECHNIQUE

Volume: 30
Issue Number: 4
Publisher: Thomas Telford Limited
ISSN: 0016-8505

Features:

Figures (27) ; References (9)

Uncontrolled Terms:

Subject Areas:

Bridges and other structures; Construction; Design; Geotechnology; Highways; Safety and Human Factors; I25: Design of Tunnels

Source Agency:

Transport Research Laboratory

Crowthorne House, Nine Mile Ride
Wokingham, Berkshire RG40 3GA United Kingdom

Source Data:

IRRD 252210

Files:

ITRD, TRIS

Last Modified:

Aug 15 1981 12:00AM

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