Results 101 to 110 of about 78,374 (299)

Analysis of squeezing‐induced failure in a water tunnel and measure of rehabilitation: A case study of Tishreen tunnel, Syria

Deep Underground Science and Engineering, EarlyView.
Different failure modes observed in Tishreen tunnel include Floor heave, wall spalling, crashing of slab, and lining convergence reaching the failure limit. Abstract Squeezing phenomena can lead to severe loads in deep tunnels, especially in the presence of a low ratio of surrounding rock strength to overburden pressure.
Mohannad Mhanna, Hussein Hadi Hussein
wiley   +1 more source

Earthquake ground-motion simulations for the Maltese Archipelago [PDF]

, 2013
The main goal of this paper is to provide earthquake ground motion simulations for particular earthquake scenarios, in terms of ground motion parameters for the Maltese islands.
D’Amico, Sebastiano, Galea, Pauline
core   +1 more source

Geology of the subduction thrust: insights from exhumed shear\ud zones on Kyushu, SW Japan [PDF]

, 2021
Along plate interfaces in subduction zones, displacement occurs by a spectrum\ud of slip styles, including ∼steady creep, slow-slip events, tectonic tremor, and\ud earthquakes. However, the factors which determine where, and how, different\ud slip styles occur, are not clear.
openaire  

Seismic performance of concrete tunnel–sand–pile interaction by the shake table test

Deep Underground Science and Engineering, EarlyView.
This research presents the square root sum of squares response of displacements and tunnel moments under the Kobe and Loma Prieta seismic excitations with a peak ground acceleration of 0.05 g for various dry relative densities of local sand in Bangladesh.
Md. Foisal Haque, Mehedi A. Ansary
wiley   +1 more source

A comprehensive study on in situ stress field characteristics and changes in rock mechanical properties in deep mines in northeastern Yunnan, China

Deep Underground Science and Engineering, EarlyView.
This paper studies the distribution characteristics of the current in situ stress field in northeast Yunnan Province by using multisource stress data, including in situ stress measurements, focal mechanism solutions, and borehole damage information, and comprehensively determines the in situ stress magnitude and direction in the mining area.
Hui Wang, Bangtao Sun, Cong Cao, Shibo Yu, He Wang, Ye Yuan, Hua Zhong   +6 more
wiley   +1 more source

Constraining the long-term evolution of the slip rate for a major extensional fault system in the central Aegean, Greece, using thermochronology [PDF]

, 2006
The brittle/ductile transition is a major rheologic boundary in the crust yet little is known about how or if rates of tectonic processes are influenced by this boundary.
Altherr, Andrew Carter, Andriessen, Andriessen, Armstrong, Brady, Buick, Buick, Daniel Stockli, Farley, Foster, Foster, Fytikas, Galbraith, Gautier, Gautier, Green, Hejl, Henjes-Kunst, Hollister, House, House, Howard, Hurford, Jansen, John, Keay, Ketcham, Kohlstedt, Kumerics, Lee, Lister, Lister, Maurice Brunel, McKenzie, Regenauer-Lieb, Regenauer-Lieb, Reiners, Richard A. Ketcham, Ring, Ring, Ring, Ring, Ring, Ring, Sibson, Sorel, Stephanie Brichau, Tagami, Tagami, Tomaschek, Uwe Ring, Vandenberg, Walcott, Wijbrans, Wijbrans, Wijbrans, Wolf   +57 more
core   +1 more source

A review of multiscale numerical modeling of rock mechanics and rock engineering

Deep Underground Science and Engineering, EarlyView.
Multiscale numerical methods of rock mechanics and rock engineering are reviewed, and the review results show that more attention should be paid to the development of an advanced constitutive model in addition to numerical techniques themselves. Abstract Rock is geometrically and mechanically multiscale in nature, and the traditional phenomenological ...
Xindong Wei, Zhe Li, Gaofeng Zhao
wiley   +1 more source

Comparison of Seismic Site Factor Models Based on Equivalent Linear and Nonlinear Analyses and Correction Factors for Updating Equivalent Linear Results for Charleston, South Carolina

Geosciences
In practice, site-specific one-dimensional (1D) seismic site response analyses are conducted to compute surface acceleration time histories considering shear wave velocity profile, modulus reduction, damping, and site-specific ground motions.
Nadarajah Ravichandran, Md. Ariful H. Bhuiyan, Vishnu Saketh Jella, Ashish Bahuguna, Jatheesan Sundararajan   +4 more
doaj   +1 more source

Asymmetric continental deformation during South Atlantic rifting along southern Brazil and Namibia [PDF]

, 2017
Plate restoration of South America and Africa to their pre-breakup position faces the problem of gaps and overlaps between the continents, an issue commonly solved with implementing intra-plate deformation zones within South America.
Koehn, Daniel, Passchier, Cees, Salomon, Eric   +2 more
core   +1 more source

Petrogenetic and geochemical characteristics of some auriferous granitoids in the Kumasi Basin, Ghana: Implications for geodynamic settings and controls of orogenic gold mineralization in the Edikan Gold Mine

Deep Underground Science and Engineering, EarlyView.
The Fobinso granitoids are granodiorites, while the Esuajah granitoids are granites based on their mineralogical composition. The granitoids are generally enriched in LILE and LREE than HFSE, MREE, and HREE, indicating mixing with crustal sources during their evolution.
Emmanuel D. Sunkari, Obed Oppong, Theophilus K. Agbenyezi   +2 more
wiley   +1 more source