Acoustic-emissive memory effect in coal samples under triaxial axial-symmetric compressionSoviet Mining - Tập 42 - Trang 203-209 - 2006
V. L. Shkuratnik, Yu. L. Filimonov, S. V. Kuchurin
The experimental data are presented for production and manifestation of the Kaiser effect in coal samples subjected to triaxial loading by the Karman scheme in the first cycle and to various loading modes in the second cycle. The Kaiser effect is identified with the help of a deformation memory effect.
Assessment of elastoplastic strains around cylindrical excavation by displacements of the excavation boundarySoviet Mining - Tập 50 - Trang 423-430 - 2014
A. I. Chanyshev, I. M. Abdulin
It is suggested to assess plastic state of rocks around an unsupported cylindrical excavation by measured displacements of its walls. The problem (overspecified in the viewpoint of classical formulation) has a unique solution that allows calculation of stresses, strains and displacements in the plastic deformation domain, including the elastic-plastic boundary, without addressing the elastoplastic...... hiện toàn bộ
Trigger initiation of elastic energy relaxation in high-stress geomediumSoviet Mining - Tập 51 - Trang 10-16 - 2015
A. P. Bobryakov, V. P. Kosykh, A. F. Revuzhenko
The authors have developed and manufactured a test bench and a measurement apparatus for modeling movement of surfaces of faults with a pre-loaded granular filler in rock mass under trigger destressing. The trigger is a weak seismic wave generated by a single point-wise blow. It is found that displacement discontinuities appear under drop of force. It is shown that soft loading consumes much energ...... hiện toàn bộ