【摘 要】
：
The influence of closed and open surface flaws on the stress distribution and failure in rock specimens is investigated.Heterogeneous finite element models are developed to simulate the compression tests on flawed rock specimens.The simulated specimens in
【机 构】
：
School of Resources and Environmental Engineering,Jiangxi University of Science and Technology,Ganzh
论文部分内容阅读
The influence of closed and open surface flaws on the stress distribution and failure in rock specimens is investigated.Heterogeneous finite element models are developed to simulate the compression tests on flawed rock specimens.The simulated specimens include those with closed flaws and those with open flaws on the surface.Systematic analyses are conducted to investigate the influences of the flaw inclination,friction coefficient and the confining stress on failure behavior.Numerical results show significant differences in the stress,displacement,and failure behavior of the closed and open flaws when they are subjected to pure compression;however,their behaviors under shear and tensile loads are similar.According to the results,when compression is the dominant mode of stress applied to the flaw surface,an open flaw may play a destressing role in the rock and relocate the stress concentration and failure zones.The presented results in this article suggest that failure at the rock surface may be managed in a favorable manner by fabricating open flaws on the rock surface.The insights gained from this research can be helpful in managing failure at the boundaries of rock structures.
其他文献
Poisonous gases,such as H2S and PH3,produced by industrial production harm humans and damage the environment.In this study,H2S and PH3 were simultaneously removed at low temperature by modified activated carbon fiber(ACF)catalysts.We have considered the a
Agriculture is the largest consumer of freshwater.Desalinated seawater is an important alternative water source for sustainable irrigation.However,some issues of the current desalination technology hinder its use for agriculture irrigation,including low b
Purpose of the current study was to investigate the effects of constantly wet and dried-rewetted sediments on root functional traits of emerged macrophytes and their nutrients removal abilities.It is based on the hypothesis that root characteristics and n
The concept of zero waste is an ideal situation that will require different solutions for different categories of waste.Electronic waste(E-waste),the fastest growing category of solid hazardous waste presents various unique challenges.Electronic product r
Optimizing sewage collection is important for water pollution control and wastewater treatment plants quality and efficiency improvement.Currently,the urban drainage pipeline network is upgrading to improve its classification and collection ability.Howeve
In-depth knowledge on the role of pyridine as a bottleneck restricting the successful application of anammox-based process treating refractory coking wastewater remains unknown.In this study,the effect of short-term pyridine addition on a simultaneous ana
Embedded data are used to retrieve phases quicker with high accuracy in phase-modulated holo-graphic data storage(HDS).We propose a method to design an embedded data distribution using iterations to enhance the intensity of the high-frequency signal in th
A new type of suspension bridge is proposed based on the gravity stiffness principle.Compared with a conventional suspension bridge,the proposed bridge adds rigid webs and cross braces.The rigid webs connect the main cable and main girder to form a truss
Engineered nanoparticles(ENPs)threaten the environment through wastewater discharging.Generally,constructed wetlands(CWs)are efficient methods for ENPs removal.However,the biotoxicity of ENPs on plants in CWs is unclear.Here,we investigated the distributi
Site-specific seismic hazard analysis is crucial for designing earthquake resistance structures,particularly in seismically active regions.Shear wave velocity(Vs)is a key parameter in such analysis,although the economy and other factors restrict its direc