Skipochka S.I., Palamarchuk T.A., Prokhorets L.V., Bobro N.T. Substantiation of pillar parameters with the purpose of improving of geomechanical system safe functioning in conditions of winning operation intensification

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Parent Category: Geo-Technical Mechanics, 2017

Category: Geo-Technical Mechanics, 2017, Issue 132

 

Geoteh. meh. 2017, 132, 27-40

SUBSTANTIATION OF PILLAR PARAMETERS WITH THE PURPOSE OF IMPROVING OF GEOMECHANICAL SYSTEM SAFE FUNCTIONING IN CONDITIONS OF WINNING OPERATION INTENSIFICATION

¹Skipochka S.I., ¹Palamarchuk T.A., ¹Prokhorets L.V., ¹Bobro N.T.

¹IGTM NAS of Ukraine

UDC [622.02:539.2|.8]:622.86:622.838.5.001.2

Abstract. When calculating parameters for the system of field development, maximum permissible span of the chamber roof and dimensions of stable pillars left in the productive stratum are determined. It is shown that safe condition of preparatory roadways in complex mining-andgeological conditions of the coal seam mining is provided by choosing an optimal width of the pillar. Various methods for calculating parameters of the systems for the non-ore, ore and coal deposit mining have been analyzed, and it is stated that at present, change of the parameters is not taken into account for the conditions of winning operation intensification. On the basis of the analysis of existing works and own experimental and theoretical studies, the authors have obtained an equation, which describes change of the rock strength properties under loading at the given rate, as well as change of the massif strength properties at increasing rate of the winning operation advancing. It is also proposed to take into consideration a time factor by way of analyzing the rock rheological properties.

Keywords: parameters of the pillars, intensification of winning operations, strength of rocks.

 

REFERENCES

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About the authors

Skipochka Sergey Ivanovich, Doctor of Technical Sciences (D. Sc.), Professor, Head of Rock Mechanics Department, N.S. Polyakov Institute of Geotechnical Mechanics under the National Academy of Sciencesof Ukraine (IGTM, NASU), Dnepr, Ukraine, This email address is being protected from spambots. You need JavaScript enabled to view it. .

Palamarchuk Tatyana Andreevna, Doctor of Technical Sciences (D. Sc.), Senior Researcher, Principal Researcher in Rock Mechanics Department, N.S. Polyakov Institute of Geotechnical Mechanics under the National Academy of Sciences of Ukraine (IGTM, NASU), Dnepr, Ukraine, This email address is being protected from spambots. You need JavaScript enabled to view it. .

Prokhorets Liliya Victorovna, Candidate of Technical Sciences (Ph. D.), Researcher in Rock Mechanics Department, N.S. Polyakov Institute of Geotechnical Mechanics under the National Academy of Sciences of Ukraine (IGTM, NASU), Dnepr, Ukraine, This email address is being protected from spambots. You need JavaScript enabled to view it. .

Bobro Nicolay Trophimovich, engineer in Rock Mechanics Department, N.S. Polyakov Institute of Geotechnical Mechanics under the National Academy of Sciences of Ukraine (IGTM, NASU), Dnepr, Ukraine, This email address is being protected from spambots. You need JavaScript enabled to view it. .

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