Registration Number
0207U000491,
0105U000519
, R & D reports
Title
Regularities of the catastrophic phenomena of a rock pressure in underground workings of deep coal mines
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Head
Shashenko A.N.,
Registration Date
25-01-2007
Organization
National Mining University
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The problem about losses of an elasto-plastic stability of a rock mass in a neighbourhood of a mine working is solved. The approach which interprets a section of a straining exceeding the maximum value as a geometrical place of points of the limiting elastic states of a material at the reached strains is used. It proved that at numerical calculations of a tense-strain state of a rock mass convergence of the solution without decrease of precision is attained with increment of magnitude of an exterior loading, equal 5 % from the maximum magnitude. It expels necessity of application of iterative procedures. Parameters of an expedient of security of a stability of mine workings in which there is a rock heaving of ground are justified. The necessary quantity of coefficients in structure of an acoustic signal which characterize parameters of an area with heightened stresses in a rock mass is spotted.
Product Description
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2020-04-02
