BEHAVIOUR OF THE "ATHENIAN SCHIST" IN EXCAVATION BY AN OPEN FACE SHIELD BORING MACHINE. EXTENSION LINE TO PERISTERI OF THE METROPOLITAN RAILWAY OF ATHENS.
Abstract
The excavation of the Metropolitan Railway of Athens is being opening mainly through the system of "Athenian Schist" which basically is constituted by a sequence of schists and metasandstones and presents high heterogeneity and tectonic disturbance due to faults and shear zones. The excavation is either mechanized or conventional. This paper is focused on the extension line to Peristeri, where an OFS (Open Face Shield) ΤΒΜ was used. This machine is effective in controlling any instabilities in fair quality rock mass, but not when poor quality rock masses are present where the stand-up time is limited. In such cases immediate support of the face or even improvement of the quality of the material is necessary. In this paper a specific classification of "Athenian Schist" is described in order to provide predictions for the behaviour of the rock masses under the conditions of an excavation with an OFS and, to access the risks but also the need of remedial measures
Article Details
- How to Cite
-
Μαρίνος Π., Μαρίνος Β., Στούμπος Γ., Νόβακ M., Κορκάρης K., & Μπενίση M. (2004). BEHAVIOUR OF THE "ATHENIAN SCHIST" IN EXCAVATION BY AN OPEN FACE SHIELD BORING MACHINE. EXTENSION LINE TO PERISTERI OF THE METROPOLITAN RAILWAY OF ATHENS. Bulletin of the Geological Society of Greece, 36(4), 1790–1795. https://doi.org/10.12681/bgsg.16648
- Section
- Engineering Geology, Hydrogeology, Urban Geology
This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.
Authors who publish with this journal agree to the following terms:
Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution Non-Commercial License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.
Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g. post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal. Authors are permitted and encouraged to post their work online (preferably in institutional repositories or on their website) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work.
