Results 11 to 20 of about 3,306,443 (202)

Plastic zone range of a roadway considering the creep effect. [PDF]

Sci Rep, 2020
The plastic zone range is an important parameter in the analysis of damage characteristics and the degree of damage to the rock surrounding a roadway. Based on the establishment of a plastic zone calculation model considering the creep effect, this paper
Chen H, Chen X, Wang Z, Li Z, An F.
europepmc   +2 more sources

Failure Mechanism for Surrounding Rock of Deep Circular Roadway in Coal Mine Based on Mining-Induced Plastic Zone

Advances in Civil Engineering, 2018
In order to reveal the failure mechanism of the deep roadway under mining-induced pressure in coal mine, the boundary equations for the plastic zone around the deep roadway were deduced, and then the evolution laws for morphology of the plastic zone and ...
Yue Yuan, Weijun Wang, Shuqing Li, Yongjian Zhu   +3 more
doaj   +2 more sources

Evolution of plastic zone in surrounding rock of roadway within anisotropic stratum under complex in-situ stress [PDF]

Scientific Reports
Deep mining operates under complex high in-situ stress conditions where the inherent anisotropy of rock strata, caused by bedding planes and random joints.
Yunjiang Sun, Shuai Guo, Yapeng Wang, Jianping Zuo, Daohan Li, Yuhao Feng, Jianan Wang, Yue Tan, Jiaxuan Xiao   +8 more
doaj   +2 more sources

Analytical solutions for characteristic radii of circular roadway surrounding rock plastic zone and their application

International Journal of Mining Science and Technology, 2019
In the non-uniform stress field, the surrounding rock plastic zone of the circular roadway shows different shapes under the different confining pressure conditions. Based on the boundary shape characteristics of the plastic zone, the characteristic radii
Xiaofei Guo, Zhiqiang Zhao, Xu Gao, Xiangye Wu, Nianjie Ma   +4 more
doaj   +2 more sources

Study on the evolution law of the ‘Butterfly-type’ plastic zone in the surrounding rock of deep dynamic pressure roadway [PDF]

Scientific Reports
The formation and development of plastic zone in the surrounding rock is the essence of large deformation damage to the surrounding rock in deep, highly stressed roadway.
Yiwen Liang, Jianqiang Jin, Wenhua Zha, Tao Xu, Wenbo Cheng   +4 more
doaj   +2 more sources

Comparative analysis and verification on broken rock zone of model test based on multiple testing methods [PDF]

Scientific Reports
There is no mature method for identifying and monitoring the broken rock zone. Taking the two-level west wing track roadway of Chengjiao Coal Mine as the engineering background, the model tests with four schemes were carried out, and the broken rock zone
Gang Liu, Zijian Liu, Yingcheng Luan, Jie Xian   +3 more
doaj   +2 more sources

Approximate solution of plastic zone boundary of surrounding rock of circular roadway considering axial stress

Meitan kexue jishu, 2023
In order to study the boundary of plastic zone of surrounding rock of a roadway considering axial stress, based on Mohr-Coulomb criterion, the implicit equation of plastic zone boundary of surrounding rock of circular roadway considering axial stress is ...
Hongtao LIU, Zijun HAN, Xiaofei GUO, Guangdong ZHOU, Shengjie WEI, Zhou HAN, Xiaogang CHEN, Wencong CHENG   +7 more
doaj   +1 more source

3D HR-EBSD Characterization of the plastic zone around crack tips in tungsten single crystals at the micron scale [PDF]

Acta Materialia, 2020
High angular resolution electron backscatter diffraction (HR-EBSD) was coupled with focused ion beam (FIB) slicing to characterize the shape of the plastic zone in terms of geometrically necessary dislocations (GNDs) in W single crystal in 3 dimensions ...
Szilvia Kal'acska, J. Ast, P. D. Isp'anovity, J. Michler, X. Maeder   +4 more
semanticscholar   +1 more source

New algorithm for optimised fitting of DIC data to crack tip plastic zone using the CJP model

Theoretical and applied fracture mechanics (Print), 2021
The work presented in this paper provides guidance in optimally determining the appropriate fitting region used in digital image correlation (DIC) when fitting a crack tip field model to DIC data.
Bing Yang, Zhanjiang Wei, F. Díaz, Z. Liao, M. James   +4 more
semanticscholar   +1 more source

Influence of Hardening on the Cyclic Plastic Zone Around Crack Tip in Pure Copper CT Specimens [PDF]

Journal of Stress Analysis, 2018
Under cyclic loading, the plastic zone becomes complicated during unloading. The energy-absorbing cyclic plastic zone is a stimulant for crack growth and can be a criterion for determining the damage around the fatigue crack tip.
R. Hosseini, R. Seifi
doaj   +1 more source