Evaluation of the Surface Settlement above the Prague Metro Line A Extension Constructed by Two Shields

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21110%2F16%3A00306520" target="_blank" >RIV/68407700:21110/16:00306520 - isvavai.cz</a>
Result on the web
<a href="https://ojs.cvut.cz/ojs/index.php/ap/index" target="_blank" >https://ojs.cvut.cz/ojs/index.php/ap/index</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.14311/AP.2016.56.0448" target="_blank" >10.14311/AP.2016.56.0448</a>

Result language
angličtina
Original language name
Evaluation of the Surface Settlement above the Prague Metro Line A Extension Constructed by Two Shields
Original language description
The new section of the Prague metro V.A is located in the west part of Prague between stations Dejvická and Motol Hospital. The new metro section is 6.2 km long and has four new stations. Majority of two running tunnels 6.2 km long were excavated by two EPB (Earth Pressure Balance) shields (2 x 4.8 km), it was the first use of modern tunnelling machines in the Czech Republic. Surface settlement above running tunnels caused by EPB shields was regularly monitored. The following paper is focused on evaluation of mentioned surface settlement using volume loss. Consequently numerical modelling of various cross-sections was executed. Modelling was realised by finite element method in 2D using software Plaxis. Two different approaches were applied for modelling of 3D effect in 2D. Important parameters Mstage and Cref were derived for selected cross-sections by back analyses (comparison of numerical modelling results with results of monitoring). Results of realised numerical modelling and volume loss evaluation can be used for preparation and realisation of similar tunnels in similar geology (for example for construction of Prague metro line D which will be probably also excavated by EPB shields).
Czech name
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Czech description
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Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
JN - Civil engineering
OECD FORD branch
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Project
<a href="/en/project/TE01020168" target="_blank" >TE01020168: Centre for Effective and Sustainable Transport Infrastructure (CESTI)</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2016
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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