Results 11 to 20 of about 4,297,894 (335)

Investigation on the pullout bearing properties and stress characteristics of fully grouted bolts in layered rock mass

open access: yesEnergy Science & Engineering
Coal‐measure strata is a typical layered structure, a better understanding of the bearing characteristics of fully grouted bolts in layered rock mass is of great significance for roadway support.
Yunlou Du   +4 more
doaj   +2 more sources

Fracture and Damage of Slit Charge Blasting in the Layered Rock Mass

open access: yesApplied Sciences
Directional fracture blasting technology of the slit charge has broad application prospects in the drilling and blasting construction of the layered rock mass.
Chenxi Ding   +3 more
doaj   +2 more sources

Creep Structure Effect of Layered Rock Mass Based on Acoustic Emission Characteristics

open access: yesShock and Vibration, 2021
Investigating the creep structural effect of layered rock mass is of great practical and theoretical significance. In this paper, taking the Muzhailing tunnel as an example, structure effect of layered rock mass based on acoustic emission characteristics
Huichen Xu   +4 more
doaj   +2 more sources

An elastic-viscoplastic creep model for describing creep behavior of layered rock

open access: yesFrontiers in Materials, 2023
To describe the full-stage creep behavior of layered rock accurately, a new elastic-viscoplastic creep model is proposed based on fractional order theory in this manuscript, which consists of a Hooke elastomer, a fractional Abel dashpot, a Kelvin body ...
Yukun Li   +3 more
doaj   +2 more sources

Investigation of anisotropic strength criteria for layered rock mass

open access: yesJournal of Rock Mechanics and Geotechnical Engineering, 2023
Layered rock mass is a type of engineering rock mass with sound mechanical anisotropy, which is generally unfavorable to the stability of underground works.
Shuling Huang   +6 more
doaj   +2 more sources

Stability evaluation of tunnels in steeply dipping layered rock mass using numerical models: a case study. [PDF]

open access: yesSci Rep
Tunnel stability is a critical factor in complex geological conditions, particularly in rock masses with steeply dipping layers. Among widely used methods, the Convergence–Confinement Method (CCM), a prevalent two-dimensional (2D) approach, effectively ...
Assefa E   +5 more
europepmc   +2 more sources

Earthquake Dynamic Failure Mechanism of Dangerous Rock Based on Dynamics and PFC3D

open access: yesFrontiers in Earth Science, 2021
The dynamic failure mechanism of horizontally layered dangerous rock during earthquakes is complex and only few studies have addressed the combination of particle flow code (PFC) meso-level failure mechanism and mechanical analysis.
Yun Tian   +4 more
doaj   +1 more source

Development of Transversely Isotropic Elastoplastic Constitutive Model in FLAC3D and Its Application in Tunnel Engineering

open access: yesGeofluids, 2022
The obvious anisotropy of layered rock mass prevents the built-in constitutive model of commercial simulation software from accurately describing the elastoplastic behavior of the rock mass.
Haoran Li   +5 more
doaj   +1 more source

Experimental study on the shear failure of layered rock bridges

open access: yesFrontiers in Earth Science, 2023
The structural face of rock plays a decisive role in the stability of geotechnical engineering, and the mechanism of failure destabilization of layered rock masses is still unclear.
Jianxin Yu   +7 more
doaj   +1 more source

Stability Analysis on the Steeply-Inclined Small-Angle Layered Surrounding Rock Masses at the Upstream High Sidewall of a Large-Span Cavern

open access: yesFrontiers in Earth Science, 2022
The underground powerhouse of China’s Wudongde hydropower station is one of the world’s underground powerhouses with the largest span and height. Because the underground powerhouse is all located in steeply-inclined layered rock masses, and the bedding ...
Chong-Lin Jian   +7 more
doaj   +1 more source

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