New Austria Tunnelling Method (NATM) Zahraa Noori Rashied Department of Geotechnical Engineering, Faculty of Engineering, Koya University http://koyauniversity.org Abstract: This method is used for long tunnels especially to great depth, where the wall of excavation may yield to the weight of the cover. It consists of excavation of the whole section for a short length followed by lining with sidewalls and finish with an arch and finally, the invert is made. Date: 14/05/2017 Place: Faculty of Engineering/ Nashmeil Hall |
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