Generalized functions in determining the stress field and convergence of a single mine working surrounded by a failure zone

1991 ◽  
Vol 27 (4) ◽  
pp. 310-313
Author(s):  
A. A. Pimenov
Keyword(s):  
Stress Field ◽  
Mine Working ◽  
Generalized Functions ◽  
Failure Zone

Failure zone of rock associated with crack growth mine working

1989 ◽  
Vol 25 (2) ◽  
pp. 125-130
Author(s):  
A. A. Pimenov
Keyword(s):  
Crack Growth ◽  
Mine Working ◽  
Failure Zone

Observation of secondary slip systems in tungsten bicrystals

1984 ◽  
Vol 42 ◽  
pp. 478-479
Author(s):  
J. R. Fekete ◽  
R. Gibala
Keyword(s):  
Stress Field ◽  
Grain Boundaries ◽  
Deformation Behavior ◽  
Stress Axis ◽  
Polycrystalline Materials ◽  
Slip Systems ◽  
Metallic Materials ◽  
Twist Boundary ◽  
Secondary Slip ◽  
Plane Normal

The deformation behavior of metallic materials is modified by the presence of grain boundaries. When polycrystalline materials are deformed, additional stresses over and above those externally imposed on the material are induced. These stresses result from the constraint of the grain boundaries on the deformation of incompatible grains. This incompatibility can be elastic or plastic in nature. One of the mechanisms by which these stresses can be relieved is the activation of secondary slip systems. Secondary slip systems have been shown to relieve elastic and plastic compatibility stresses. The deformation of tungsten bicrystals is interesting, due to the elastic isotropy of the material, which implies that the entire compatibility stress field will exist due to plastic incompatibility. The work described here shows TEM observations of the activation of secondary slip in tungsten bicrystals with a [110] twist boundary oriented with the plane normal parallel to the stress axis.

Engineering aspects of the mine working development in difficult hydrogeological conditions

2019 ◽  
pp. 132-141
Author(s):  
V.G. Hrinov ◽  
◽  
A.A. Khorolskyi ◽  
Yu.O. Vynohradov ◽  
◽  
...  
Keyword(s):  
Mine Working ◽  
Hydrogeological Conditions

Method of smooth particle hydrodynamics for simulation the failure and relief of the roof of mine working

2018 ◽  
Vol 11 (49) ◽  
pp. 464-475
Author(s):  
Malinnikova O.N. ◽  
◽  
Troimov V.A. ◽  
Shipovskii I.E. ◽  
◽  
...  
Keyword(s):  
Mine Working ◽  
Smooth Particle Hydrodynamics ◽  
Particle Hydrodynamics
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