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Information × Registration Number 0220U103869, 0116U001833 , R & D reports Title Justification of rational parameters of butto bits for blasthole and wells popup.stage_title Head Hromadskyi Anatolii S., Registration Date 25-11-2020 Organization Kryvyi Rih National University popup.description2  Research idea. To establish and use the characteristics of the process of transmission of deformation waves through the drilling tool to justify the rational parameters of the bit-expander and develop on their basis the technology of drilling and blasting. Purpose. To establish the laws of the process of transmission of deformation waves through the drilling tool to increase the efficiency of perforation drilling of compensatory wells, and to substantiate on this basis the design parameters of the bit-expander. Research object. The transmission of deformation waves through the bit-expander, taking into account changes in the geometry of its body and the design parameters of the drilling mud removal system. Research subject. The relationship between the efficiency of transmission of deformation waves to the destructive elements of the bit-expander of perforation drilling of compensatory wells and its design parameters. Research methods. Experimental and theoretical research methods were used in the work: analysis and generalization of scientific and technical achievements of the use of the tool for drilling of compensatory wells in the mining industry; computer programming, taking into account analytical geometry, similarity theory; methods of mathematical statistics for the analysis of experimental results. The adequacy of computer models is established by comparing the results of field experiments and computer modeling. Keywords: chisel-expander, mechanical drilling speed, deformation waves, compensatory well, step change of body cross section Product Description popup.authors Bobyr Vitalii G Hromadskyi Anatolii S. Kuz'menko Dmytro I Lifentsov Oleksndr S Slatvinskyi Mykola M Khrutskyi Andrii O. popup.nrat_date 2020-11-25 Close