Open AccessDEFORMATION AS A PREPARING PROCESS FOR DESTRUCTION
Author(s) -
В. Е. Миренков
Publication year - 2019
Publication title -
interèkspo geo-sibirʹ
Language(s) - English
Resource type - Journals
ISSN - 2618-981X
DOI - 10.33764/2618-981x-2019-2-4-170-175
Subject(s) - deformation (meteorology) , context (archaeology) , symmetry (geometry) , isotropy , point (geometry) , brake , work (physics) , process (computing) , kinematics , rotational symmetry , geology , mechanics , geometry , structural engineering , computer science , physics , classical mechanics , mechanical engineering , engineering , mathematics , paleontology , oceanography , quantum mechanics , operating system
Actual mining is accompanied with stress increasing and as a result increasing of developed space causes to deformation of rock with specialties, which brake the symmetry, obtained after statistic calculation. For horizontal working classic approach leads to calculation of symmetric relatively coordinate axes deformation. In that case boundary conditions and mechanical quantities, related to soling containing development, are sized in an arbitrary way. However, it is well known from in-situ observations that braking the symmetry and as a result caving starting happen in the most stressed point. According to used physical and mechanical laws, destruction occurs quite unpredictable and does not have single before determined behavior. As it supposed in the context of symmetric calculation, trying certainly carry out the destruction. Kinematic calculation of displacements, considering weight of rocks, has allowed to brake classic symmetry at calculation of roof and floor displacements and to get closer to understanding of mechanism of the deformation process. In the work isotropic solid with horizontal sunken working, which provides the most deformation symmetry at classic calculation, is considered. Introduction into consideration of dynamic of process of actual mining totally destroys built symmery of possible deformation providing destruction starting in the most stressed point. Dynamic is considered after single advance of support, sum of which additionally provides absence of the symmetry in the destruction process.