Zberovskyi V., Vlasenko V., Petukh O., Kyrychenko M., Zbierowski P., Kustra A. Hydroimpulse impact in the technological cycle of constructing preparatory drifts: evaluation and economic efficiency

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Parent Category: Geo-Technical Mechanics, 2024
Category: Geo-Technical Mechanics, 2024, Issue 168

Geoteh. meh. 2023, 167, 17-24

 

HYDROIMPULSE IMPACT IN THE TECHNOLOGICAL CYCLE OF CONSTRUCTING PREPARATORY DRIFTS: EVALUATION AND ECONOMIC EFFICIENCY

1Zberovskyi V., 1Vlasenko V., 1Petukh O., 2Kyrychenko M.,  3Zbierowski P., 4Kustra A.

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

2Dnipro University of Technology

3University of Economics in Katowice

4AGH University of Science and Technology

UDC [622.831.325:532.528].003.1

Language: English

Abstract. The article examines the efficiency of using the hydroimpulse loosening method in outburst-hazardous coal seams in the face of a preparatory drift. The assessment of the method's effectiveness is based on the results of industrial experimental studies conducted in the mining-geological conditions of coal mines “Krasnodonvuhillia” PJSC in the Donetsk Basin of Ukraine. Rational parameters of the method were determined through a comparison of fluid injection modes. Static and impulse modes were considered, and criteria for monitoring the efficiency of injection were established.

It has been established that the use of a cavitation generator in the process of hydro-loosening coal seams allows for an increase in the effective zone of crack formation and fluid filtration in the seam by developing shear deformation. Therefore, the application of hydroimpulse impact on the outburst--hazardous coal seam in the face of a preparatory drift allowed for an expansion of the safe coal extraction zone to the depth of the borehole drilling. This, in turn, has increased the rate of drift construction by a shearer. Based on the results of mining-experimental works and studies, the parameters of the layout scheme for technological boreholes and control blastholes in the face of the drift are justified. The high reliability of the hydroimpulse impact device and the efficiency of the method have been established.

The economic efficiency of the method is determined based on the comparison of financial costs for measures to prevent sudden emissions of coal and gas in the conditions of the mines of “Krasnodonvuhillia” PJSC. The calculation compares the expenses when using the drilling and blasting method for drift construction and the method of drift construction with a shearer. The drilling and blasting method for drift construction in shock blasting mode was considered as the baseline. When constructing drifts with a stoping machine, the application of hydro-loosening or drilling of pre-advance boreholes is envisaged. The costs per 1 work cycle and 1 linear meter of drift construction, monthly expenses, and expenses per 1 kilometer of drift construction are compared. The economic effect of implementing the hydroimpulse fracturing method is established by reducing the costs of the production process and increasing the speed of constructing preparatory drifts from 3 to 8 meters per day.

Keywords: face of the working, coal seam, gas dynamic phenomenon, hydroimpulse impact, economic efficiency.

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About the authors:

Zberovskyi Vasyl, Doctor of Technical Sciences (D.Sc.), Senior Researcher, Head of Department of Underground Coal Mining Technology, 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 0000-0003-3275-1864

Vlasenko Vasyl, Candidate of Technical Sciences (Ph.D.), Senior Researcher, Senior Researcher in Department of Underground Coal Mining Technology, 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 0000-0001-6448-7944

Petukh Oleksandr, Candidate of Technical Sciences (Ph.D.), Senior Researcher, Senior Researcher in Department of Underground Coal Mining Technology, 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 0000-0001-5832-0072

Kyrychenko Maryna,Senior Lecturer in Department of Electric Power Engineering, Dnipro University of Technology, Dnipro, Ukraine, This email address is being protected from spambots. You need JavaScript enabled to view it. , ORCID 0000-0003-0615-7589

Zbierowski Przemyslaw, Dr. Hab., Professor at the Department of Human Resource Management, University of Economics in Katowice, Katowice, Poland, This email address is being protected from spambots. You need JavaScript enabled to view it. , ORCID 0000-0001-6144-1940.

Kustra Arkadiuszem, Dr. Hab., Vice Dean for Science and Finance at the Department of Economics and Management in Industry, AGH University of Science and Technology, Krakow, Poland, This email address is being protected from spambots. You need JavaScript enabled to view it. , ORCID 0000-0001-8416-4405.