Results 61 to 70 of about 1,618 (204)
Kinematic Limit Analysis of Roof Stability for Elliptical Tunnels in Rock Masses
International Journal for Numerical and Analytical Methods in Geomechanics, Volume 49, Issue 16, Page 3880-3896, November 2025.ABSTRACT Noncircular cross‐sections are commonly encountered in engineering practice; however, primary attempts to analyze roof stability have focused on circular and rectangular configurations. This study investigates the roof stability of elliptical tunnels with varying aspect ratios, employing two semi‐analytical approaches: piecewise linear and ...
Tae‐Won Seo, Dowon Park
wiley +1 more source
Improved Subsidence Assessment for More Reliable Excavation Activity in Tehran
Applied SciencesThis paper presents a particular tunneling method, the new Austrian tunneling method (NATM), which plays an important role in reducing subsidence of the surface and damage to structures in urban areas.
Mahdi Dashti, Zoltán Virág
doaj +1 more source
Global Biogeochemical Cycles, Volume 39, Issue 5, May 2025.Abstract During the transition from the Last Glacial Maximum (LGM) to the Holocene, the atmospheric N2O mole fraction increased by 80 nmol mol−1. Using ice core measurements of N2O isotopomer ratios, we show that this increase was driven by increases in both nitrification and denitrification, with the relative partitioning between both production ...
J. A. Menking +7 more
wiley +1 more source
Application of filling technology into New Austrian Tunnelling Method (NATM)
, 2009 У статті проаналізовані суть і основні принципи Новоавстрійського Методу Тунелювання (NATM), що широко застосовується в зарубіжній практиці будівництва транспортних тунелів.
Козерема, М.М.
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Decoupling of N2O Production and Emissions in the Northern Indian Ocean
Global Biogeochemical Cycles, Volume 39, Issue 4, April 2025.Abstract The northern Indian Ocean is a hotspot of nitrous oxide (N2 ${\mathrm{N}}_{2}$O) emission to the atmosphere. Yet, the direct link between production and emission of N2 ${\mathrm{N}}_{2}$O in this region is still poorly constrained, in particular the relative contributions of denitrification, nitrification and ocean transport to the N2 ...
Yangyang Zhao +5 more
wiley +1 more source
Understanding Tunnel Lining Deformations: The Influence of Cover Depth on Structural Behaviour
Engineering PerspectiveAs cities continue to expand, the demand for effective underground infrastructure to address urban transportation challenges has increased. Tunnels, particularly those constructed using the New Austrian Tunneling Method (NATM), play a crucial role in ...
Sedef Ergenç +2 more
doaj +1 more source
NATM tunnel as multiscale composite structure: The essential role of shell-to-ground shear transfer [PDF]
The New Austrian Tunneling Method (NATM) realizes an integrated ground–shell composite structure, namely a displacement-monitored shotcrete shell surrounded by rock bolt-reinforced ground.
Hellmich, Christian, Scharf, Raphael
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An insight into the New Austrian Tunnelling Method (NATM)
, 2004 The objective of this paper is to investigate a particular tunnelling method, known as the New Austrian Tunnelling Method (NATM), which first appeared in English publications in 1964.
Karakus, M., Fowell, R.
core
Prerequisites for BIM‐based invoicing in NATM projects
, 2022 The successful management of big tunnelling projects requires the complete documentation of technical and financial data as well as their ongoing evaluation.
Winkler, Leopold +5 more
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Challenges of Tunnel Support in Low Overburden Zones in Urban Areas—Case Study
Applied SciencesThis paper systematically analyzes the challenges of stabilizing tunnel excavations in zones with low overburden in urban environments, through an engineering-validated case study of the Kobilja Glava Tunnel.
Ekrem Bektašević +5 more
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