Ilin S., Adorska L., Pataraia D., Ilina I. Diagnostics of mine hoisting systems at mines operating in rock shear zones

Details
Parent Category: Geo-Technical Mechanics, 2024
Category: Geo-Technical Mechanics, 2024, Issue 170

Geoteh. meh. 2024, 170, 144-155

 

DIAGNOSTICS OF MINE HOISTING SYSTEMS AT MINES OPERATING IN ROCK SHEAR ZONES

1Ilin S., 1Adorska L.,2Pataraia D.,3Ilina I.

1M.S. Poliakov Institute of Geotechnical Mechanics of the National Academy of Sciences of Ukraine

2LEPL G. Tsulukidze Mining Institute

3Dnipro University of Technology

UDC 622.67.016.22:622.8.1/.8

Language: English

Abstract. The paper considers the issues of diagnostics of the “hoisting vessel - reinforcement” systems at mines under the rock shear influence on the operational condition of vertical hoisting shafts. The purpose of these works is to improve the technical condition of the mine hoisting complexes in such conditions to increase their reliability and hoisting speed, to significantly increase the volume of minerals produced to the surface as the main indicator of mine productivity. The rock shear causes the risk of loss of stability of the shaft massif, which causes its displacement during long-term operation and leads to a violation of the vertical shafts geometry. The curvature of the shaft walls affects the buntons and conductors of rigid reinforcement and leads to their deformation and relaxation of the embedment in the shaft reinforcement, which creates emergency and hazardous situations during the movement of hoisting vessels. The results of studies of the dynamic state of the “hoisting vessel - reinforcement” system are presented for the conditions of rock shear on the example of vertical shaft of a Ukrainian mining enterprise. We analyzed the distribution of force load in the sections of the examined shaft, calculated the safety margins of the reinforcement elements with an assessment of risk factors, and determined the technical condition of the shaft reinforcement with recommendations for its improvement. During the test, methods were used to manage the operational condition of mine hoisting equipment based on modern technologies and technical means of computerized rapid diagnostics of existing equipment. Based on the results of the shaft inspection, recommendations are provided to improve the safety of its operation in conditions of rock shear. This is the basis for developing repair plans and determining the order of their implementation in accordance with the annual mining plan of the enterprise. The expected results will make it possible to move to a qualitatively new level of safety management of mine hoisting in coal and ore shafts and optimize repair and restoration work in risky conditions during long-term operation of the hoisting shafts.

Keywords: mine hoisting, shafts, vessel, reinforcement, conductors, buntons.

REFERENCES

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About the authors:

Ilin Serhii, Candidate of Technical Sciences (Ph.D.), Senior Researcher, Senior Researcher of Department of Rock Mechanics, M.S. Poliakov Institute of Geotechnical Mechanics of the National Academy of Sciences of Ukraine (IGTM of the NAS of Ukraine), Dnipro, Ukraine, This email address is being protected from spambots. You need JavaScript enabled to view it. ORCID 0000-0001-5211-7567

Adorska Larysa, Candidate of Technical Sciences (Ph.D.), Senior Researcher, Senior Researcher of the Department of Rock Mechanics, M.S. Poliakov Institute of Geotechnical Mechanics of the National Academy of Sciences of Ukraine (IGTM of the NAS of Ukraine), Dnipro, Ukraine, This email address is being protected from spambots. You need JavaScript enabled to view it. ORCID 0000-0001-6907-6984

Pataraia David, Doctor of Technical Sciences (D.Sc.), Professor, G. Tsulukidze Mining Institute, Tbilisi, Georgia, This email address is being protected from spambots. You need JavaScript enabled to view it.  ORCID 0000-0001-7511-8597

Ilina Inna, Candidate of Technical Sciences (Ph.D.), Associate Professor, Dnipro University of Technology, Dnipro, Ukraine,  This email address is being protected from spambots. You need JavaScript enabled to view it. ORCID 0000-0002-4307-5171