Skipochka S. I., Palamarchuk T. A., Prokhorets L. V., Bobro N. T. Analysis of influence of mining-and-geological conditions and parameters of pillars on their safety factor

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Parent Category: Geo-Technical Mechanics, 2017

Category: Geo-Technical Mechanics, 2017, Issue 137

 

Geoteh. meh. 2017, 137, 47-55

ANALYSIS OF INFLUENCE OF MINING-AND-GEOLOGICALCONDITIONS AND PARAMETERS OF PILLARS ON THEIR SAFETYFACTOR

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

¹N.S. Polyakov IGTM NAS of Ukraine

UDC [622.02:539.2]:622.83

Abstract. Subject of the research was change of the pillar safety factor in the non-metallic deposits. Objective of the research was to analyze influence of mining and geological conditions and parameters of the pillars on their safety factor. As a result of the studies, it was established that with increased height of the pillar and depth of its bedding, there is a tendency to the safety factor reduce, and increase of the pillar length leads to increase of the safety factor. With increase of the pillar service life, no significant changes of the safety factor were observed. At the fixed minimum safety factor n = 3, which is normally accepted for the gypsum deposits, and at increased depth of the gypsum strata occurrence, width of the pillar should be increased substantially, and with increased duration of the deposit exploitation at the fixed length of the pillar, its width at the same depth should not be increased so rapidly. For all depths, increased rate of winning operations leads to increase of the safety factor. In this case, probability of the pillar failure decreases.

Keywords: deposits of gypsum, chamber-and-pillar mining, geological conditions, parameters of the pillars, safety factor.

 

REFERENCES

1. Skipochka, S. I., Palamarchuk, T. A., Yalansky, A. A., Prokhorets, L. V. and Bobro, N. T. (2017), “To calculation of the camera-pillar system of development elements in the rocks of different strength with the account of intensification of mountain works ”, Suchasnі resursoenergozberіgauchі tehnologіyi gіrnichogo virobnitstva, vol. 1, no. 19, pp. 53-65.

2. Kiziyarov, O.L. (2012), “Investigation of influence velocity movement of coal face on stress-strain state of roof in the lava”, Coll. scientific. tr. DonGTU, vol. 37, pp. 102-109.

3. Kirnichanskiy, G.T., Usachenko, B.M. and Khayit, M.D. (1983), K voprosy teorii deformirovania I razrysheniya pri sgatii [To the question of the theory of deformation and fracture under compression], (Manuscript of the VINITI - No. 156 - 83), Dnepropetrovsk, SU.

4. Merkin, D.R. (1980), Vvedenie v mekhaniky gibkoy niti [Introduction to the mechanics of a flexible thread], Nauka, Moscow, SU.

5. Singh, T. N. and Suresh Naidu A. (2000), “Influence of strain rate and cyclic compression on physico-mechanical behavior of rock”, J. Indian Eng. and Materials Sciences, vol. 8, pp. 8-12.

6. Bulat, A. F., Usachenko, B. M., Radchenko, V. V., Bolshakov, P. Ya. and Vinogradov, V.V. (1998), “Perspective and tasks of a large-scale expansion in the Ukrainian mines of Ukrainian anchoring systems for the protection of mining workers (Respectively of program"The Anker")”, Geo-Technical Mechanics, no. 5, pp. 35-40.

7. Konstantinova, S. A. (2002) “Methodical approaches used to solve geodynamic safety problems in the development of the Verkhnekamsk deposit of potassium salts”, Sb. nauch. tr. OAO “Galurgiya”, pp. 18-40.

8. Skipochka, S. I., Palamarchuk, T. A., Prokhorets, L. V. and Bobro, N. T. (2016), “Laws of changes in the stress-strain state of the rock massif at intensification of mining operations”, Suchasnі resursoenergozberіgauchі tehnologіyi gіrnichogo virobnitstva, vol. 2, no. 18, pp. 26-39.

9. Bobro, N. T., Rubets, G. T. and Usachenko, V. B. (2006), “Probabilistic evaluation of the strength of a multilayer ceiling of chamber workings”, Geo-Technical Mechanics, no. 66, pp. 191-195.

10. Glushko, V. T., Cherednichenko, V. P. and Usatenko, B. S. (1981), Reologiya gornogo massiva[Rheology of the rock massif], Naukova dumka, Kiev, SU.

 

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 Sciences of 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, Master of Science, 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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