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Settlement Caused by Tunnelling Beneath a Motorway Embankment
Measurement of the surface settlement caused by driving a 3.4m diameter tunnel through soft alluvial soil beneath a motorway embankment near Avon-mouth are described in this Report. Construction was carried out within a shield in compressed air at a depth of cover of about 4.5m. Settlement measurements were made on both motorway hard shoulders across the line of tunnel. Maximum settlement was about 25 mm, and both settlement troughs were exceptionally wide possibly due to consolidation effects. The measured cross sectional area of the settlement trough was 0.36 sq m which is equivalent to 4 per cent of the excavated face area. (Copyright (c) Crown Copyright 1980.)
Settlement Caused by Tunnelling Beneath a Motorway Embankment
Measurement of the surface settlement caused by driving a 3.4m diameter tunnel through soft alluvial soil beneath a motorway embankment near Avon-mouth are described in this Report. Construction was carried out within a shield in compressed air at a depth of cover of about 4.5m. Settlement measurements were made on both motorway hard shoulders across the line of tunnel. Maximum settlement was about 25 mm, and both settlement troughs were exceptionally wide possibly due to consolidation effects. The measured cross sectional area of the settlement trough was 0.36 sq m which is equivalent to 4 per cent of the excavated face area. (Copyright (c) Crown Copyright 1980.)
Settlement Caused by Tunnelling Beneath a Motorway Embankment
A. F. Toombs (author)
1980
15 pages
Report
No indication
English
Settlement caused by tunneling beneath a motorway embankment
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