E3S Web Conf.
Volume 60, 2018Ukrainian School of Mining Engineering
|Number of page(s)||8|
|Published online||16 October 2018|
Results of the experimental research of the heat-transfer jet pressure to the rock surface during thermal reaming of the borehole
Institute of Geotechnical Mechanics under the National Academy of Science of Ukraine, Department of Vibropneumatic Transport Systems and Complexes, 2a Simferopolska Str., 49005 Dnipro
2 Dnipropetrovsk National University of Railway Transport named after Academician V. Lazarian, Department of Thermal Engineering, 2 Lazariana Str., 49010 Dnipro, Ukraine
3 Dnipropetrovsk National University of Railway Transport named after Academician V. Lazarian, Department of Accounting, Auditing and Intellectual Property, 2 Lazariana Str., 49010 Dnipro, Ukraine
* Corresponding author: OIVoloshyn1951@nas.gov.ua
The performed analysis of scientific sources confirms the existence of a small number of publications devoted to the experimental research of the gasdynamics and plasmodynamics of jets used as a heat-transfer medium in the thermal methods of mine rocks destruction. There are almost no experimental and theoretical publications related to the multiple-jet plasmotrons research. The expediency of own experimental researches performing has been substantiated concerning the lateral inflow of heat-transfer medium high-speed jets on the borehole surface. An experimental research has been made of the interaction between the heat-transfer medium high-speed jets and the surface of the borehole imitated by the through duct. The further prospects of this work are the following: to determine the gas velocity along the lateral surface of the through duct and the value of the heating capacity coefficient from the heat-transfer medium to the lateral surface of the through duct, which imitates the rock surface in the borehole. These parameters are required for creating a mathematical model of the brittle destruction of rocks.
© The Authors, published by EDP Sciences, 2018
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