Results 21 to 30 of about 5,824,919 (291)

Static and Dynamic Influence of the Shear Zone on Rockburst Occurrence in the Headrace Tunnel of the Neelum Jhelum Hydropower Project, Pakistan

open access: yesEnergies, 2019
Rockburst is an unstable failure of a rock mass which is influenced by many factors. During deep excavations, the presence of nearby geological structures such as minor faults, joints, and shear zones increases the likelihood of rockburst occurrence.
Abdul Muntaqim Naji   +5 more
doaj   +1 more source

CENTRAL ASIAN GEODYNAMIC REGIMES WEST AND EAST 102–104° GEODIVIDER

open access: yesГеодинамика и тектонофизика, 2020
Ample geologic and geophysical data provide the basis for distinguishing the 102–104° E geodivider in the North, Central and South Asia. The geodivider’s central part is confirmed by the data on seismicity, seismically active faults and the modern crust ...
Yu. G. Gatinsky   +2 more
doaj   +1 more source

Effect of chloride-induced deterioration of exterior RC walls on floor response and equipment fragility in nuclear auxiliary buildings

open access: yesNuclear Engineering and Technology
This study evaluates the effects of chloride-induced deterioration of exterior reinforced concrete (RC) walls of a nuclear power plant. A multi-scale analytical framework was proposed, linking wall-level stiffness degradation, building-level elastic time-
Hyeon-Keun Yang   +2 more
doaj   +1 more source

On the canalization of seismic energy

open access: yesAnnals of Geophysics, 2011
Tlie paper shows how the velocities of the channel waves<br />Pa and 8a, as thus far calculated, are apparent velocities. From such apparent<br />values it is easy to calculate the real velocities, which coincide with the<br />minimum velocity of longitudinal and transversal waves, calculated by<br />15. Gutenberg and by Miss I.
openaire   +3 more sources

Evaluation of effective cross-area of reinforced concrete wall considering chloride diffusion using ANN

open access: yesNuclear Engineering and Technology
Reinforced concrete structures are subject to exposure to chloride ions in the air, leading to chloride penetration, and carbonation attacks resulting from exposure to carbon dioxide.
Hyeon-Keun Yang, Jun-Hee Park
doaj   +1 more source

Industrial explosions and seismic activity of the Ukrainian Shield

open access: yesГеофизический журнал, 2014
Results of analysis of records and spectrograms of seismic events, registered in the Ukrainian Shield during 2009—2013 — industrial explosions in the open pits and mines and local earthquakes have been described.
V. Kutas, Yu. Andrushchenko, I. Kalitova
doaj   +1 more source

Swedish National Seismic Network

open access: yes, 1904
The Swedish National Seismic Network (SNSN) started with the installation of a Wiechert seismograph in Uppsala in 1904. Since 1998 the SNSN is a part of the Department of Earth Sciences at Uppsala University.
Swedish National Seismic Network
core   +1 more source

Numerical investigation of reinforced concrete shear walls under bi-axial loading conditions

open access: yesNuclear Engineering and Technology
This study investigates the effects of bi-axial loading on the seismic performance of reinforced concrete (RC) shear walls through nonlinear finite element analysis (FEA).
Hyeon-Keun Yang, Jun-Hee Park
doaj   +1 more source

A review of COHRISK: Multihazard risk quantification software for nuclear power plants

open access: yesNuclear Engineering and Technology
A combination of more than one natural hazard can occur simultaneously by their inherent correlation or by coincidence. One well-known multihazard incident, the Tohoku earthquake-tsunami in Japan 2011, led to a core damage accident at the Fukushima ...
Eujeong Choi   +5 more
doaj   +1 more source

On the stress drop in North Eurasia earthquakes source-sites versus specific seismic energy [PDF]

open access: yesГеосистемы переходных зон, 2020
A generalization of the results on the stress drop and the specific seismic energy for the earthquakes in Northern Eurasia has been made. The relationship of these parameters with the seismic moment and the magnitude has been analyzed.
Nailia A. Sycheva, Leonid M. Bogomolov
doaj   +1 more source

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