Modeling of tunneling-induced ground surface movement

Surface subsidence control during tunnelling in urban areas is required to minimize any disturbance to nearby buildings and services. The main focus of previous studies concerning surface subsidence was basically on empirical solutions derived from field research. The number of analytical studies wh...

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Bibliographic Details
Published in:IOP conference series. Earth and environmental science 2015-01, Vol.24 (1), p.12030-12035
Main Author: Strokova, L A
Format: Article
Language:English
Subjects:
Earth
Earth pressure
Empirical analysis
Exact solutions
Finite element method
Grounds
Mathematical analysis
Mathematical models
Modelling
Overconsolidation
Subsidence
Tunnelling
Urban areas
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Summary:Surface subsidence control during tunnelling in urban areas is required to minimize any disturbance to nearby buildings and services. The main focus of previous studies concerning surface subsidence was basically on empirical solutions derived from field research. The number of analytical studies which have been carried out is not enough because they do not consider complex ground conditions; hence, it is required to model the effect of surface subsidence caused by tunnelling based on comprehensive analytical solution combined with numerical modelling. This paper presents the results of tunneling-induced surface settlement modelling based on finite element method. The effect of the overconsolidation ratio of soils expressed in terms of the coefficient of earth pressure at rest (K sub(0)) on surface subsidence caused by tunnelling is investigated. It is demonstrated that value of K sub(0) is an essential factor affecting accuracy of consolidation settlement estimate in overconsolidated clays.
ISSN:1755-1315
1755-1307
1755-1315
DOI:10.1088/1755-1315/24/1/012030