Results 31 to 40 of about 99,891 (264)
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 +3 more
doaj +1 more source
Effect of Principal Stress Field on the Development of Plastic Zone ahead of the Gateroad
Energies, 2020 The distribution of a plastic zone ahead of a gateroad plays a significant role in maintaining the long-term stability of mining spaces. For a long time, the principal stress field such as the values, the direction, etc.
Hongtao Liu +3 more
doaj +1 more source
Applied Sciences, 2022 A three-axis experimental simulation model was established for a roadway with layered surrounding rock by a 20 MPa true triaxial analog simulation equipment, and the corresponding layered surrounding rock numerical simulation model was established by ...
Jiaren Chen +5 more
doaj +1 more source
Meitan xuebaoWith the increasing depth of coal mining, the stability control of surrounding rock in deep roadway has become one of major problems in the mining field, and the effect of surrounding rock control in deep roadway is directly related to the safe ...
Weijun WANG +3 more
doaj +1 more source
AIP Advances, 2018 An elastic-plastic analysis of the mode III crack surface vicinity was performed in an infinitely wide elastic-perfectly plastic plate, in which a pair of anti-plane forces applied at an arbitrary point on the crack surface.
Feng Huang +7 more
doaj +1 more source
Advances in Civil Engineering, 2021 The formation and expansion of the plastic zone is always accompanied by the deformation and failure of the roadway-surrounding rock. Based on elastoplastic theory, this paper considers the gas pressure parameters and uses the Mohr–Coulomb strength ...
Chao Yuan +3 more
doaj +1 more source
Experimental methodology for the quantification of crack tip plastic zone and shape from the analysis of displacement fields [PDF]
Fracture and Structural Integrity, 2017 The current work presents a novel methodology for the experimental quantification of the crack tip plastic zone during fatigue crack growth. This methodology is based on the application of yield criteria to estimate the area and the shape of the plastic ...
J.M. Vasco-Olmo +4 more
doaj +3 more sources
Shock and Vibration, 2021 Aiming at the problem of surrounding rock deformation and failure of mining roadway and its control, a mechanical model of the circular roadway under the mining environment is established, and the implicit equation of the plastic zone boundary is derived.
Jicheng Feng +6 more
doaj +1 more source
矿业科学学报, 2019 Based on the special lateral pressure coefficients of 1,the radius of surrounding rock plastic zone obtained by approximate implicit method has a large theoretical error contrasted with the corresponding analytical solution of the mature axisymmetric ...
Dong Hailong, Gao Quanchen
doaj +1 more source
Geofluids, 2022 In order to explore the influence of coal pillar width on the principal stress deflection and plastic zone form of surrounding rock in deep roadway excavation, taking 11030 working face transportation roadway of Zhaogu No.
Ji Li, Rongguang Zhang, Xubo Qiang
doaj +1 more source