Results 1 to 10 of about 1,618 (204)

A Study of Vibration Reduction Effects of TBM and NATM Parallel Construction Methods according to Tunnel Depth and Size

open access: yesApplied Sciences (Switzerland), 2023
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 initial cost and
Seong Won Lee, Chang-Yong Kim
exaly   +4 more sources

Analysis of Stability and Required Offset with Vibration Velocity Considering Conditions of Bedrock and Explosive Charges Using the TBM and NATM Extension Blasting Method

open access: yesApplied Sciences (Switzerland), 2022
The development of underground spaces in urban centers has attracted significant research attention. Typical excavation methods for underground spaces in urban areas include the New Austrian tunneling method (NATM) and the tunnel boring machine (TBM ...
Seong Won Lee, Seungbo Shim
exaly   +4 more sources

The Resting-State Brain Network Functional Connectivity Changes in Patients With Acute Thyrotoxic Myopathy Based on Independent Component Analysis [PDF]

open access: yesFrontiers in Endocrinology, 2022
ObjectiveThe independent component analysis (ICA) was applied to explore the correlation between clinical manifestation and the functional connectivity changes of the sensorimotor network (SMN) and left frontoparietal network (LFPN) in patients with ...
Yanfang Li   +6 more
doaj   +2 more sources

The application of reinforcement learning to NATM tunnel design

open access: yesUnderground Space (China), 2022
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 artificial ...
Enrico Soranzo, Carlotta Guardiani
exaly   +3 more sources

Radiosensitization of Rare-Earth Nanoparticles Based on the Consistency Between Its K-Edge and the X-Ray Bremsstrahlung Peak [PDF]

open access: yesJournal of Functional Biomaterials
Nanoparticle-based X-ray radiosensitization strategies have garnered significant attention in recent years. However, the underlying mechanisms of radiosensitization remain incompletely understood.
Xiang Zhu   +7 more
doaj   +2 more sources

Ground settlement induced by NATM tunneling and surface loads in Shiraz metro station [PDF]

open access: yesScientific Reports
Urban tunneling, especially in the construction of shallow metro stations, can lead to significant ground movements that may affect the safety and integrity of nearby surface structures.
Arif Khan   +4 more
doaj   +2 more sources

Construction strategies for a NATM tunnel in São Paulo, Brazil, in residual soil

open access: yesUnderground Space (China), 2022
Due to the fast growth of urban areas worldwide, the demand for tunnels in developed areas is increasing. The design and construction of those tunnels are complex because of their shallow depths and their interaction with existing aboveground and buried ...
Tarcisio Celestino, Antonio Bobet
exaly   +3 more sources

Numerical modeling for Selection of appropriate tunneling method in S station of Isfahan subway [PDF]

open access: yesAnalytical and Numerical Methods in Mining Engineering, 2022
Nowadays, due to the increasing urban environments, increasing the density of surface structures and the lack of space for intra-urban transportation, the need to implement underground structures such as tunnels and subway stations in urban environments ...
عنایت الله امامی میبدی   +2 more
doaj   +1 more source

Study results of a stress-strain state of a pylon station construction from monolithic reinforced concrete in the engineering and geological conditions of St. Petersburg [PDF]

open access: yesE3S Web of Conferences, 2023
In recent years, structures made from monolithic reinforced concrete have been increasingly developed in the field of underground construction. This has been made possible by the development of modern tunneling technologies such as NATM and ADECO&RS ...
Kavkazskiy Vladimir   +2 more
doaj   +1 more source

Dampak Model Tanah Pada Analisis Metode Elemen Hingga 2 Dimensi Terowongan NATM : Studi Kasus Terowongan Manikin

open access: yesSiklus: Jurnal Teknik Sipil, 2023
Konstruksi terowongan melalui tanah lempung sensitif terhadap air dapat menyebabkan deformasi berlebihan pada dinding terowongan. Untuk dapat memprediksi deformasi yang terjadi pada terowongan melalui tanah lempung ekspansif, model konstitutif tanah yang
Muhammad Hanif   +3 more
doaj   +1 more source

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