CUED Publications database

Centrifuge modelling of shaft excavations in clay

Faustin, NE and Elshafie, MZEB and Mair, RJ (2018) Centrifuge modelling of shaft excavations in clay. In: 9th International Symposium on Geotechnical Aspects of Underground Construction in Soft Ground, 2017-4-4 to 2017-4-6, São Paulo, Brazil pp. 295-300..

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Abstract

© 2018 Taylor & Francis Group, London. Circular shafts are an integral component of tunnelling projects and can be located very close to buildings and services in urban environments. They enable access of equipment, personnel and material to the tunnel horizon and also provide ventilation and/or emergency access to the completed tunnel. The current state of knowledge concerning the behaviour of circular shafts and the ground movement associated with their construction is limited. Consequently, any conservative assumptions made in the design of the shaft lining or to estimate ground movement due to their construction can have considerable cost implications for tunnelling projects. This paper describes a small-scale model test performed in a geotechnical centrifuge to simulate shaft excavation in clay. The centrifuge model and procedure developed to excavate the shaft in-flight are described. Measurements are presented for instruments used to monitor the response of the shaft lining as well as the adjacent ground.

Item Type: Conference or Workshop Item (UNSPECIFIED)
Subjects: UNSPECIFIED
Divisions: Div D > Geotechnical and Environmental
Div D > Construction Engineering
Depositing User: Cron Job
Date Deposited: 09 Oct 2017 20:23
Last Modified: 20 Oct 2020 03:17
DOI: 10.1201/9781315099507-34