Abstract
This paper studies numerically the influence of different: a) steering gap openings; b) tail grouting pressures and; c) steering gap pressure gradients, on surface settlements induced during EPB tunnelling. The numerical study is performed with an advanced 3D finite element model in the Simulia Abaqus program, which provides detailed and realistic simulation of EPB tunnelling. The results reveal a significant effect of the size of the steering gap and its filling conditions (empty, full, partially filled with process liquids), while subsequent tail grouting proves to be incapable to reverse the adverse effects in ground surface settlement caused by various volume loss sources.
| Original language | English |
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| Title of host publication | EURO:TUN 2017 : computational methods in tunneling and subsurface engineering : proceedings of the Fourth International Conference on Computational Methods in Tunneling and Subsurface Engineering, Innsbruck University, Austria, April 18-20, 2017 |
| Place of Publication | Innsbruck, Austria |
| Publisher | Universität Innsbruck |
| Pages | 143-150 |
| Number of pages | 8 |
| Volume | 1 |
| ISBN (Print) | 9783903030350 |
| Publication status | Published - Apr 2017 |
| Event | IV International Conference on Computational Methods in Tunneling and Subsurface Engineering - Innsbruck, Austria Duration: 18 Apr 2017 → 20 Apr 2017 Conference number: 4 |
Conference
| Conference | IV International Conference on Computational Methods in Tunneling and Subsurface Engineering |
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| Abbreviated title | EURO:TUN 2017 |
| Country/Territory | Austria |
| City | Innsbruck |
| Period | 18/04/17 → 20/04/17 |