Preview

Author(s):	Moritz, B.; Matt, R.; Graf, F.; Brandtner, M.
Title:	Advanced Observation Techniques for Sophisticated Shallow Tunnel Projects - Experience Gained Using Innovative Monitoring Methods at the Lainzer Tunnel LT31
Abstract:	The article presents experiences gained during construction of the approximately 3 km long urban Lainzer Tunnel (LT31), driven with side-wall galleries under shallow overburden. The structure's safety is assessed mainly on the basis of 3D deformation analyses, comparison of predicted and observed system behaviour, evaluation of shotcrete stress, and online monitoring of surface settlements. Displacements of the tunnel face, correlating with pre-face surface settlements, are monitored by an innovative, fully automatic face monitoring system (OBM). A correlation between volume loss (surface) and volume increase (face) could be established. A test field comparing fibreglass anchors (GRP) with IBO face bolts revealed - contrary to expectations - no appreciable reduction of surface settlement due to GRP anchors. However, temporary inverts constructed in the side wall galleries in combination with IBO face bolts support turned out to be effective in reducing horizontal convergence and resulting settlements of the ground surface in a sensitive residential area.
Source:	Geomechanik und Tunnelbau 1 (2008), No. 5
Page/s:	466-476
Language of Publication:	German

I would like to buy the article

You can download this article for 25 € as a PDF file (4.19 MB).
The PDF file can be read, printed and saved.
Duplication and forwarding to third parties is not allowed.

To enquire about the cost of the contribution and to order the PDF, please send us an e-mail to marketing@ernst-und-sohn.de. You can also use the following button.

make a request

I am an online subscriber

As an online subscriber of the journal "Geomechanik und Tunnelbau" you can access this article via Wiley Online Library.

I would like to order "Geomechanik und Tunnelbau"

This article has been published in the journal "Geomechanik und Tunnelbau". If you would like to learn more about the journal, you can order a free sample copy or find out more information on our website.

Prices include VAT and postage. Prices for 2017/2018.
€ Prices apply to Germany only. Subject to alterations, errors excepted.