Results 11 to 20 of about 257,564 (287)

Effect of Near-Fault Pulsed Ground Motions on Seismic Response and Seismic Performance to Tunnel Structures

open access: yesShock and Vibration, 2021
Seismic analysis of tunnels close to or crossing seismogenic faults is a complex problem, which is often neglected at the design stage for the lack of specific codes or guidelines and also because underground structures are considered less vulnerable ...
Xiancheng Mei, Qian Sheng, Zhen Cui
doaj   +1 more source

An adaptive prediction method for mechanical properties deterioration of sandstone under freeze–thaw cycles: a case study of Yungang Grottoes

open access: yesHeritage Science, 2021
Due to the location of the Yungang Grottoes, freeze–thaw cycles contribute significantly to the degradation of the mechanical properties of the sandstone.
Chenchen Liu   +5 more
doaj   +1 more source

Evaluation of many load tests of passive rock bolts in the Czech Republic [PDF]

open access: yes, 2017
Within the research project "FR-TI4/329 Research and development - creating an application system for the design and analysis of soil and rock anchors including the development of monitoring elements", an extensive stage of field load tests of rock bolts
Holý, Ondřej
core   +5 more sources

Study on stress distribution and extrusion load threshold of compressed filled rock joints

open access: yesApplied Rheology, 2023
The distribution of stress and the normal extrusion load threshold in weak interlayer are crucial for direct shear test of filled rock joints, but there is a lack of theoretical research in this area. First, an analytical solution for stress distribution
Wang Pengpeng   +3 more
doaj   +1 more source

Investigation of the Mechanical and Permeability Evolution Effects of High-Temperature Granite Exposed to a Rapid Cooling Shock with Liquid Nitrogen

open access: yesGeofluids, 2021
Liquid nitrogen (LN2), which can greatly improve the efficiency of hot dry rock (HDR) mining, is commonly used as a cooling material in the enhanced geothermal system (EGS).
Tianzuo Wang   +5 more
doaj   +1 more source

Numerical modeling for a simulated rockburst experiment using LS-DYNA

open access: yesUnderground Space, 2021
Ground support systems are commonly used to mitigate the potential consequences of rockburst in burst prone mines. To assess the capacity of ground support systems when subjected to dynamic loading, simulated rockburst tests using blasting were conducted
C.P. Yi   +4 more
doaj   +1 more source

Fracture Mechanics Characterization of an AnisotropicGeomaterial [PDF]

open access: yes, 2012
Argillites are considered worldwide as potential host rock for high level radioactive waste given the low permeability and strong adsorption potential.
Barpi, Fabrizio   +4 more
core   +1 more source

Simple models of the hydrofracture process [PDF]

open access: yes, 2015
Hydrofracturing to recover natural gas and oil relies on the creation of a fracture network with pressurized water. We analyze the creation of the network in two ways.
Chen, Chih Hung, Marder, M., Patzek, T.
core   +1 more source

Automatic identification method of bridge structure damage area based on digital image

open access: yesScientific Reports, 2023
It is of great scientific and practical value to use effective technical means to monitor and warn the structural damage of bridges in real time and for a long time.
Jinchao Wang   +3 more
doaj   +1 more source

Representative sampling method for laboratory testing on shear strength of rock joints

open access: yesFrontiers in Earth Science, 2022
The direct shear test is commonly used to determine the shear strength of rock joints. The measured shear strength, however, varies greatly with specimen positions due to the heterogeneity of rock joints.
Changshuo Wang   +6 more
doaj   +1 more source

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