SUPPORT PRESSURE PARAMETERS DETERMINATION AND THE COEFFICIENTS OF STRESS CONCENTRATION AND DECONCENTRATION IN THE CHARACTERISTIC ZONES OF LONGWALL BLOCKS
The actual problem for the mining industry is to identify the maximum possible number of regularities in the rock massif stress state formation in various mining and geological conditions during mining operations. Specifying the factors, correlations and necessary conditions that determine the parameters of concentration and deconcentration pressure coefficients of the support pressure during the specific zones of longwall blocks is one of the possible solutions.
At the present, in order to solve the problems of the rock massif pressure distribution, during mining operations under various conditions, the different versions are used as initial hypotheses for the stressed state of coal and rocks in the strata not affected by the man-made impacts.
The analysis of the existing hypotheses of continuous medium, yielding medium, elasto-plastic medium, hereditary creep, plates, beams and the results of field survey conducted at the mines of OJSC SUEK-Kuzbass during the period of 2010–2014 years displays the possibility of their practical use for determining parameters of the support pressure during the projects of extraction sites design, taking into account both the determined application range and the specified values of the input parameters, including obligatory verification of the calculation results of for adequacy.
Key words: ROCK MASSIF, SUPPORT PRESSURE, CONTINUOUS MEDIUM HYPOTHESIS, YIELDING MEDIUM HYPOTHESIS, ELASTO-PLASTIC MEDIUM HYPOTHESIS, HEREDITARY CREEP HYPOTHESIS, PLATE HYPOTHESIS, BEAM HYPOTHESIS, STRESS STATE OF THE STRATA, CONCENTRATION AND DECONCENTRATION PRESSURE COEFFICIENTS, ROOF COLLAPSE, METHODS OF SUPPORT PRESSURE CALCULATION.
Imprint: Torro V.O., Remezov A.V., Zainulin R.R. Support pressure parameters determination and the coefficients of stress concentration and deconcentration in the characteristic zones of longwall blocks. Bulletin of Scientific Centre VostNII for Industrial and Environmental Safety. 2018. № 4. pp. 56-65.
Авторы: V.O. Torro, A.V. Remezov, R.R. Zainulin
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