Palamarchuk T.A., Prokhorets L.V., Bobro M.T., Trypolskyi V.M. Features and regularity of zonal changes in the physicomechanical characteristics of Zakhidnyi Donbas rocks

Details
Parent Category: Geo-Technical Mechanics, 2019
Category: Geo-Technical Mechanics, 2019, Issue 147

Geoteh. meh. 2019, 147, 92-99

https://doi.org/10.1051/e3sconf/201910900068

Features and regularity of zonal changes in the physicomechanical characteristics of Zakhidnyi Donbas rocks

1PalamarchukT.A., 1ProkhoretsL.V.,1BobroM.T.,1TrypolskyiV.M.

1Institute of Geotechnical Mechanics named by N. Poljakov of National Academy of Sciences of Ukraine

 

UDC 622.016.63

Language: English

Abstract. Purpose of the work is summarizes the results of numerous experimental studies of the physicomechanical properties of rocks from deposits of Zakhidnyi Donbas, defined by both mechanical and geophysical methods, to identify regularity of change. The analysis of the obtained data allowed us to reveal the zonal nature of their change. Regularity has been established for increasing the strength parameters of rocks in the direction from west to east. The mechanism of increasing the strength parameters of coal and host rocks, in our opinion, is explained, among other things, by the influence of Coriolis forces arising from the daily rotation of the Earth. Besides, for the most important rocks indicators the limits of change are obtained, namely: the compressive strengths, the resistance of rocks to cutting and their abrasiveness for both the roof and the floor of mine workings. It has been established that for more durable rocks, such as sandstone, the change in strength characteristics in the roof and floor is insignificant, whereas for weaker mudstones and siltstones, there is a significant difference in the above strength parameters. A generalization of the test results of Zakhidnyi Donbas rocks showed a large variation in their properties under the conditions of the achieved depth of the reservoir under development, which is due to the variability of the composition, structure, texture of the rocks and the degree of epigenetic transformations.

It has been established, as the depth increases to 400 m, the strength of the rocks grows rapidly, then from a depth of 400 – 600 m, the intensity of the growth of rock strength remains constant, and from a depth of 900 m and more it rises again.

On the basis of the data obtained, the planned rates and methods of preparatory workings are determined, when the workings are carried out using the mine combine method, the cutting tool consumption is planned, the technique and methods of securing the workings are selected. The results can be used in the preparation of forecast passports of lavas and excavation drifts, as well as in substantiating the technical conditions for the use of mining and sinking complexes.

Keywords: rocks, physicomechanical properties, strength, minings of Zakhidnyi Donbas.

 

References

  1. F. F. Menezes, C. Lempp, Journal of Structural Geology 114 196–205 (2018)
  2. Q. Zhu, D. Li, Zh. Han, X. Li, Z. Zhou, International Journal of Rock Mechanics and Mining Sciences 115 33–47 (2019)
  3. A.F. Bulat et al, Ugleporodnyy masiv Donbassa – kak geterogennaya sreda Kiev: Nauk. Dumka (2008)
  4. B.M. Usachenko, V.Ya. Kirichenko, A.V. Shmigol, Okhrana podgotovitelnykh vyrabotok glubokikh gorizontov shakht Zapadnogo Donbassa Moskva: TsNIEIugol (1992)
  5. A. J. Das, P. K. Mandal, R. Bhattacharjee, S. Tiwari, A. Kushwaha, L. B. Roy, International Journal of Rock Mechanics and Mining Sciences 93 101–114 (2017)
  6. S.I. Skipochka, T.A. Palamarchuk, L.V. Prokhorets, Features definitions of strength characteristics of uranium ore and host rocks Suchasnі resursoenergozberіgaiuchі tekhnologіi gіrnychogo vyrobnytstva, No 1 (19) 53–66 (2016)

Abouttheauthors

Palamarchuk Tetiana Andriivna, Doctor of Technical Sciences (D.Sc), Senior Researcher, Principal Researcher in Rock Mechanics Department, Institute of Geotechnical Mechanics named by N. Poljakov of National Academy of Sciences of Ukraine (IGTM, NAS of Ukraine), Dnipro, Ukraine, This email address is being protected from spambots. You need JavaScript enabled to view it.

Prokhorets Liliia Victorivna, Candidate of Technical Sciences (Ph.D.), Junior Researcher in Rock Mechanics Department, Institute of Geotechnical Mechanics named by N. Poljakov of National Academy of Sciences of Ukraine (IGTM, NAS of Ukraine), Dnipro, Ukraine, This email address is being protected from spambots. You need JavaScript enabled to view it.

Bobro Mykola Trohymovych, Master of Science, Engineer in Rock Mechanics Department, Institute of Geotechnical Mechanics named by N. Poljakov of National Academy of Sciences of Ukraine (IGTM, NAS of Ukraine), Dnipro, Ukraine, This email address is being protected from spambots. You need JavaScript enabled to view it.

Trypolskyi Valerii Mykolaiovych, Master of Science, chief technologist in Rock Mechanics Department, Institute of Geotechnical Mechanics named by N. Poljakov of National Academy of Sciences of Ukraine (IGTM, NAS of Ukraine), Dnipro, Ukraine, This email address is being protected from spambots. You need JavaScript enabled to view it.

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