Results 121 to 130 of about 248,542 (278)

Behaviour of the subway tunnel in Algiers

open access: yes, 2007
Pred vsakim projektom za izgradnjo tunela je treba zaradi visokih stroškov izdelati manjšo modelno študijo ter jo po potrebi matematično preveriti. S tem se pri realizaciji projekta izognemo nepredvidljivim posledicam. Slednje upošteva tudi predstavljena raziskava, pri kateri smo na fizikalnem modelu v razmerju 1:20 eksperimentalno preučili obnašanje ...
Seriani, Abdelbaki   +2 more
openaire   +2 more sources

Transp Res D Transp Environ [PDF]

open access: yes
It is well-documented that subway stations exhibit high fine particulate matter (PM|) concentrations. Little is known about the potential of river-tunnels to increase PM| concentrations in subways. We hypothesized a "river-tunnel" effect exists: Stations

core  

Numerical research on anti‐dislocation measures design of deep‐buried tunnels in an anisotropic rock mass area

open access: yesDeep Underground Science and Engineering, EarlyView.
This paper conducts a numerical simulation study on the construction of a deep‐buried tunnel in an anisotropic stratum area. A statistical analysis of the effects of two anti‐faulting design measures, namely, a conventional design and an articulated design, is carried out, and the results demonstrate the effectiveness of the anti‐faulting structures ...
Shiqi Liu   +3 more
wiley   +1 more source

Waterproofing Technology of Underground Subway Tunnels

open access: yesJournal of Architectural Research and Development
The waterproof construction of subway tunnels is a crucial and challenging aspect of subway tunnel engineering. Mastering excellent waterproof construction technology is essential to ensure that the construction meets design requirements and guarantees the safe operation of subway lines.
Ruiquan Liu, Jinxiao Jia, Xi Cheng
openaire   +1 more source

Study on the dynamic response of subway tunnel by viaduct collapsing vibration and the protective measures of reducing vibration [PDF]

open access: yes, 2015
Collapsing vibration caused by demolition blasting of buildings has large effect on the buildings and underground structures nearby. Combined with the demolition blasting of a viaduct, numerical simulation was carried out to investigate dynamic response ...
Chong Ji   +4 more
core  

Probabilistic characterization of seepage‐induced tunnel face failure via a two‐phase double‐point material point method

open access: yesDeep Underground Science and Engineering, EarlyView.
To address seepage‐induced tunnel face collapse, this study develops a two‐phase double‐point MPM framework to capture large‐deformation hydro‐mechanical interactions. Incorporating a cementation‐based constitutive model with dynamic permeability updates, the model is successfully validated against saturated granular‐column collapse experiments ...
Yue Tong   +6 more
wiley   +1 more source

Energy evolution‐based damage quantification and failure prediction of fault zone tunnel lining concrete: A novel acoustic emission–strain energy coupling approach

open access: yesDeep Underground Science and Engineering, EarlyView.
This study investigates the damage evolution and failure mechanisms of tunnel lining concrete in active fault zones through uniaxial compression tests integrated with acoustic emission (AE) monitoring. A strong linear correlation is identified between the AE cumulative absolute energy and the total strain energy, providing a reliable energy‐based ...
Shuaida Zhu   +4 more
wiley   +1 more source

Study on the Influence of Adjacent Double Deep Foundation Pit Excavation Sequence on Existing Tunnel Deformation Based on HSS Constitutive Model

open access: yesApplied Sciences
With the increase in the number of buildings along the subway, the impact of building construction on the adjacent subway tunnels has gradually come to the forefront and become an important problem to be solved in the engineering field.
Sijun Wang   +4 more
doaj   +1 more source

Perpendicular anisotropy in magnetic tunnel junctions [PDF]

open access: yes, 2012
Kugler Z. Perpendicular anisotropy in magnetic tunnel junctions.
Kugler, Zoe
core  

SMOKE PROTECTION OF A DOUBLE-TRACK SUBWAY TUNNEL [PDF]

open access: yes
The article discusses the features of arrangement of smoke protection systems in double-track subway tunnels. The calculation method for the smoke ventilation system parameters is presented, taking into account the factor of longitudinal slope, the heat ...
Alexander A. Abashkin   +2 more
core   +2 more sources

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