Open AccessEFFECT OF ORIGINAL STRESS STATE OF THE ROCK MASS ON DISTRIBUTION OF DISPLACEMENTS AND STRESSES IN THE VICINITY OF SUPPORTED MINE WORKING IN UNSTABLE ROCKS
Author(s) -
А.А. Krasnovsky,
V. M. Seryakov
Publication year - 2020
Publication title -
interèkspo geo-sibirʹ
Language(s) - English
Resource type - Journals
ISSN - 2618-981X
DOI - 10.33764/2618-981x-2020-2-82-88
Subject(s) - hydrostatic equilibrium , hydrostatic stress , geotechnical engineering , stress (linguistics) , cushioning , geology , rock mass classification , ultimate tensile strength , stress field , hydrostatic pressure , cauchy stress tensor , roof , gravitational field , materials science , mechanics , structural engineering , composite material , engineering , physics , classical mechanics , finite element method , linguistics , philosophy , quantum mechanics
The statement of the problem of finding the stress-strain state of support and rocks surrounding the mine working in case of cushioning with phenol resins is used to determine the peculiarities of its formation under the influence of gravitational and hydrostatic original stress fields. It is found that maximum vertical compressive stresses arise in vertical support units at gravitational field, which exceed by half their values for a hydrostatic field. However, as the height in the mine roof filled with phenol resins increases, maximum vertical stresses for both options become comparable. In arch support units at hydrostatic original state of the rock mass, the values of horizontal tensile stresses are by half less than at gravitational original field.