Results 11 to 20 of about 996,706 (291)

Experimental study on the shear failure of layered rock bridges [PDF]

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   +2 more sources

Optimization of direct-hole cutting blasting technology for deep-buried layered surrounding rock diversion tunnels

open access: yes地质科技通报, 2023
Objective In recent years, the trend of tunnel blasting construction extending to depth is becoming more and more significant, and the influence of layered rock mass in deep buried diversion tunnel on cutting quality in blasting construction is the key ...
Shouguo Jiang   +4 more
doaj   +2 more sources

Study on deformation of layered rock tunnel based on material point method [PDF]

open access: yesArchives of Civil Engineering
The stability problems of layered rock mass are frequently encountered in tunnel and underground engineering. Affected by bedding plane, the mechanical properties of surrounding rock show obvious anisotropy, which makes its failure characteristics more ...
Jingjie Pang   +6 more
doaj   +3 more sources

Seismic Wave Propagation Characteristics and Their Effects on the Dynamic Response of Layered Rock Sites

open access: yesApplied Sciences, 2022
To investigate the seismic response of layered rock sites, a multidomain analysis method was proposed. Three finite element models with infinite element boundaries for layered sites were analysed.
Lihu Dong, Danqing Song, Guangwei Liu
doaj   +2 more sources

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

Deformation Characteristics and Response Factors of Rock Bolt Body in Roadway with Layered Composite Roof

open access: yesApplied Sciences
Layered composite roofs are characterized by developed bedding fissures, resulting in severe deformation and damage of rock bolts at the top of the roadway, as well as a poor roadway support effect.
Ziyue Wang, Shangxin Fang, Cun Zhang
doaj   +2 more sources

Research on Damage Evolution Mechanism of Layered Rock Mass under Blasting Load

open access: yesBuildings
Rock mass consists of many discontinuities, such as faults, joints, etc., and layered joints are a common kind of rock mass structure. The joints affect the stress wave propagation, and blasting is an economical and efficient rock fragmentation method ...
Lixiang Xie   +5 more
doaj   +2 more sources

A review of computational approaches for simulating fracturing mechanisms in layered rock formations [PDF]

open access: yesInternational Journal of Coal Science & Technology
With the increasing availability and sophistication of computer hardware and software, computational modelling has become a cornerstone in the understanding of geomaterials mechanical behaviours over recent decades.
Hongtao Li   +4 more
doaj   +4 more sources

Crack coalescence in rock-like specimens with two dissimilar layers and pre-existing double parallel joints under uniaxial compression

open access: yes, 2021
Layered rock masses with joints are widely found in nature. Their mechanical behavior plays a key role in rock engineering applications. However, previous studies have concentrated on the single lithologic layer, and few studies have reported the crack ...
Cao, Rihong,   +11 more
core   +1 more source

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

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