caa a22 4500 465724507 CHVBK 20180323111726.0 cr unu---uuuuu 170327e19901101xx s 000 0 eng 10.1007/BF02499443 doi (NATIONALLICENCE)springer-10.1007/BF02499443 Deformation of a blocky medium around a working [Elektronische Daten] [S. Lavrikov, A. Revuzhenko] Conclusions: The deformation of the blocky mass around a working can be interpreted as displacement of the material in a convergent radial channel with an aperture angle of 360°. A kinematic scheme permitting the formulation of the problem in statically determined form (similar to the classical scheme for calculation of the pressure of the earth at a supporting wall) is constructed. Axisymmetric solutions for different levels of block interaction on contact are given. Estimates of the carrying capacity are obtained in the case of rigid-plastic contact between the block and in conditions of dry friction. It is shown that this scheme admits of transition in the limit to the accurate solution of the Lame problem in the continuum formulation. Cases in which increase in the relative slip between the blocks leads to decrease in the interaction force between them (weakening) are considered. With slight weakening, the deformation is a stable process. If the weakening is greater than a critical level, the solution becomes unstable, which indicates the uncontrollable release of stored elastic energy from the mass. Plenum Publishing Corporation, 1991 Lavrikov S. aut Revuzhenko A. aut Soviet Mining Kluwer Academic Publishers-Plenum Publishers 26/6(1990-11-01), 485-492 0038-5581 26:6<485 1990 26 10913 https://doi.org/10.1007/BF02499443 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF02499443 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Lavrikov S. aut NATIONALLICENCE 700 1- Revuzhenko A. aut NATIONALLICENCE 773 0- Soviet Mining Kluwer Academic Publishers-Plenum Publishers 26/6(1990-11-01), 485-492 0038-5581 26:6<485 1990 26 10913 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer