New Austrian Tunnelling method
View article: A Gene Expression Programming Model for Predicting Tunnel Convergence
A Gene Expression Programming Model for Predicting Tunnel Convergence Open
Underground spaces have become increasingly important in recent decades in metropolises. In this regard, the demand for the use of underground spaces and, consequently, the excavation of these spaces has increased significantly. Excavation…
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Evaluation of new Austrian tunnelling method applied to Bolu tunnel's weak rocks Open
Since the development of the new Austrian tunnelling method (NATM) in the 1960s, this technique has been applied successfully in many tunnels. However, opinions of NATM principles emerged till 2000, i.e. NATM is not a tunnelling method, bu…
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Experiment and Application of NATM Tunnel Deformation Monitoring Based on 3D Laser Scanning Open
In recent years, 3D laser scanning technology has been applied to tunnel engineering. Although more intelligent than traditional measurement technology, it is still challenging to estimate the real-time deformation of NATM tunnel excavatio…
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Large-scale distributed fiber optic sensing network for short and long-term integrity monitoring of tunnel linings Open
Structural integrity assessment is essential in modern tunneling to ensure safe construction works. State-of-the-art monitoring approaches like displacement readings of geodetic prisms are often limited in the spatial as well as the tempor…
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Problems Encountered during a Railway Tunnel Excavation in Squeezing and Swelling Materials and Possible Engineering Measures: A Case Study from Turkey Open
The T3 railway tunnel—under construction within the scope of the Bursa-Yenişehir high-speed train project—is located in northwestern Turkey and has a length of 1250 m. The tunnel is being constructed entirely in silty clay/clayey silt, san…
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The application of reinforcement learning to NATM tunnel design Open
The New Austrian Tunnelling Method (NATM) tunnel design is performed by testing support classes against the geological profile. We propose to replace this manual process with reinforcement learning, a generic framework within the realm of …
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Rock mass quality prediction on tunnel faces with incomplete multi-source dataset via tree-augmented naive Bayesian network Open
Rock mass quality serves as a vital index for predicting the stability and safety status of rock tunnel faces. In tunneling practice, the rock mass quality is often assessed via a combination of qualitative and quantitative parameters. How…
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A Geotechnical Perspective on a Complex Geological Environment in a High-Speed Railway Tunnel Excavation (A Case Study from Türkiye) Open
The T26 tunnel was designed within the scope of the Ankara-Istanbul high-speed railway in accordance with the speed of 250 km/h. Some serious problems and excessive deformations were encountered during the excavation works. The deformation…
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Research on Tunnel Construction Monitoring Method Based on 3D Laser Scanning Technology Open
A tunnel is a symmetric structure working under uncertain load. In the traditional method of monitoring and measurement of tunnel deformation, only a small number of symmetric measuring point displacements are engaged to represent the over…
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Analysis of labour accidents in tunnel construction and introduction of prevention measures Open
At present, almost all mountain tunnels in Japan are excavated and constructed utilizing the New Austrian Tunneling Method (NATM), which was advocated by Prof. Rabcewicz of Austria in 1964. In Japan, this method has been applied to tunnel …
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Modeling and Verification of Early Age Thermal Stress in Second Lining Concrete of NATM Tunnels Open
The objective of this research is to establish proper modeling of FEM simulation for early thermal stress in second lining concrete of NATM tunnels. The proposed model was verified by field measurements. Stresses at the crown and at the si…
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Performance evaluation of reinforced earth walls with sustainable backfills subjected to railway loading Open
The concept of using Reinforced Earth (RE) walls for rail corridors is gaining popularity. As of now, very few nations have successfully adopted the RE walls for Railway infrastructure. These structures require good quality granular materi…
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Assessment for shallow and large tunnel construction in weak ground conditions: Application of tunnel boring machines Open
With recent technological advancements, tunnel boring machines (TBM) have developed and exhibited high performance in large diameters and weak ground conditions. Tunnels are crucial structures that significantly influence the timelines of …
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Key features of numerical models for the FE-simulation of deep tunnel advance by the NATM Open
In the present work, important aspects of time-dependent nonlinear 3D finite element (FE) models for deep tunnel advance by the New Austrian Tunneling Method (NATM), characterized by repeated sequences of excavation, securing, and idle per…
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3D numerical modeling for construction of tunnels intersections- case study of Hakim tunnel Open
The design and construction of the tunnel intersection is one of the critical part of tunnel projects .This paper present a numerical analysis of static behavior of Hakim tunnel intersection that is located in Tehran-Iran. Hakim tunnel is …
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Spray-applied waterproofing membranes: effective solution for safe and durable tunnel linings? Open
What is the perfect tunnel lining? Cost efficient, easy and fast to build with acceptable environmental impact? How to construct a watertight and safe tunnel lining? Would it be possible to apply a waterproofing system directly onto the ro…
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Performance of the Flexible and Rigid Lining under Earthquake Impact and Weakness of the New Austrian Tunneling Method (NATM) Principles, a Specific Case Study of the Bolu Tunnel Open
The Bolu tunnel is located between the Istanbul-Ankara Highway and its construction took approximately 13 years. Since the beginning of the tunnel excavation, serious deformations and stability problems have been encountered. The basis of …
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COMPARISON OF TUNNELLING METHODS NATM AND ADECO-RS Open
The New Austrian Tunnelling Method (NATM) has been often used in the CzechRepublic in last two decades. One of the methods, without application in the Czech Republic,is an Italian method called ADECO-RS, which has reached significant use i…
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Analysis of Environmental Load by Work Classification for NATM Tunnels Open
국내 외 기후변화 대응 체제의 강화에 따라 전 세계적으로 온실가스 감축을 위한 노력을 기울이고 있다. 건설 분야에서는 건축물을 중심으로 온실가스 저감을 위한 연구가 활발히 이루어지고 있으나, 온실가스 이외에 지구환경에 영향을 미치는 각종 오염물질을 고려한 종합적인 환경부하 저감을 위한 연구는 다소 부족하다. 이에 본 연구에서는 NATM터널을 대상으로 LCA (Life Cycle Assessment, 전과정 평가) 방법론을 이…
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3D Numerical Investigation of Ground Settlements Induced by Construction of Istanbul Twin Metro Tunnels with Special Focus on Tunnel Spacing Open
One of the most important considerations of tunneling in urban areas is controlling the amount of surface settlement that occurs during construction stages. The goal of this paper is to investigate the effect of spacing of Istanbul Twin Me…
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A Study of Vibration Reduction Effects of TBM and NATM Parallel Construction Methods according to Tunnel Depth and Size Open
The new Austrian tunnelling method (NATM) and tunnel boring machine (TBM) are methods for excavating underground spaces. The NATM construction method has noise and vibration problems, and excavation using TBM has the disadvantage of high i…
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Analysis of Plastic Deformations for Tunnel Support Design in Weak Flysch Rock Mass of a Hydropower Tunnel in Central Albania Open
The prediction and analysis of deformations in tunnels excavated in weak rock mass have been traditionally done with the application of analytical methods. However, these methods are seldom evaluated in terms of their performance. This pap…
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Probabilistic Time Estimation of Tunneling Projects: The Uri Headrace Tunnel Open
Probabilistic time estimation is an essential part of proper risk management in tunneling projects. In recent decades, several models have been developed for this purpose, one of which was developed by Isaksson and Stille (Rock Mech Rock E…
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Effect of Drilling Speed of Probe Drilling Data on the Clustering of Rock Strength at NATM-4, Hulu Langat, Selangor Open
Prediction of ground condition ahead of tunnel face is the most important practice during the construction of tunnel. Prior to excavation, geological condition are studied in order to avoid any potential excessive water ingress or tunnel c…
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Evaluation of The Effect of Rock Joints on the Stability of Underground Tunnels Open
To facilitate the water supply to the main cities in Malaysia such as Kuala Lumpur, Putrajaya and Cyberjaya, Pahang Selangor Raw Water Transfer Tunnel project is constructed in 2015. Facility tunnel of 44.6 km length with 5.2 m diameter ar…
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The Relation of the Method Used in Tunneling Operations with the Geological Structure Example of the Black Sea Coastal Road Open
Transportation tunnels are the most preferred method to facilitate transportation in mountainous and rough terrains. The excavation method and the choice of fortification tools in tunnel construction depend on the geological structure of t…
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The comparative analysis of the stress-strain state of the support of the escalator tunnel constructed in weak soils by the NATM Open
The construction of underground objects of the subway is always associated with building of structures connecting the surface. For subways, such structures are escalator tunnels. During the construction of the Dnipro Metro, these undergrou…
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Numerical analysis of changing the force factors in temporary lining at the tunnel construction by the NATM Open
The paper presents the results of a numerical analysis of force factors in temporary lining at the tunnel construction by New Austrian Tunneling Method (NATM). The relevance of the performed research is substantiated by the complexity of t…
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Study on the Reinforcing Effects of the FRP-PCM Method on Tunnel Linings for Dynamic Strengthening Open
In recent years, fiber-reinforced plastic (FRP) has been widely used in the reinforcement of concrete structure fields due to its favorable properties such as high strength, low weight, easy handling and application, and immunity to corros…
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Stability Evaluation of TBM Pilot Tunnels to Rear Blasting Using the Protection Shield Open
Recent studies have increasingly investigated construction methods for tunnel excavation because of growing underground space development. Although the New Austrian tunneling method (NATM)—a representative tunnel excavation method—can be a…