Now showing items 1-10 of 13
Justification of the rational parameters of chambers of the third stage extraction while underground iron ore mining
The width of stope chamber of third stage mining in contact with week rocks of hanging wall is justified. The calculation technique of mining methods with backfilling is improved.
Laboratory research of zonal structuring of massif around mine workings
Objective is research of zonal structuring of massif around mine workings. The main methods of research conducting are following: equivalent, optic-polarization and electri-cally conductive materials. Boundaries of zones ...
RATIONALIZATION OF DEEP BOREHOLES DRILLING IN THE CONDITIONS OF PJSC “ZAPORIZSKYI IRON-ORE PLANT”
Purpose. To develop effective approach to determination of parameters of deep boreholes location which would consider stress of the ore massif in the course of layers breaking. Methods. It has been established that energy ...
Technologies of extraction of semiprecious stones raw materials in the conditions of energy failure of mineral resources
(Physical and technical problems of mining production, 2017)
The work purpose is to develop effective technologies of extraction of semiprecious stones with taking into account energy failures of mineral resources. The main methods of research conducting are methods of statistical ...
Analytical modeling of the backfill massif deformations around the chamber with mining depth increase
(CRC: Press, 2015)
Using thermodynamic analytical research method, the investigation of strains formation in the backfill massif around the chamber of second stage was performed. It was established that the horizontal and vertical dimensions ...
Technology of underground mining of ore deposits
(Dnipro University of Technology, 2018)
The content of the publication corresponds to the educational-professional program of preparation of bachelors of specialty 184 Mining, in particular the program of educational discipline “Technology of underground mining ...
On the formation of a mine-based energy resource complex
The paper represents the analysis, which has helped to determine tendencies of the formation of energy resource complex based on the available mining facilities. The approach helps prolong operating life of the mine with ...
NEW THEORY OF ROCK MASSIF FRAGMENTATION BY USING EXPLOSION ENERGY
The hypotheses of the explosive action and the theory of calculating the values of the zones' radiuses of contortion and cracks formation around the charging cavity have been analyzed for developing the theory of the rock ...
Research of technologies and technical means for drilling and blasting of horizontal mine workings
The main scientific and practical results of the study of technologies and technical means for drilling and blasting horizontal and inclined (up to 120) mine workings based on high-performance self-propelled drilling, ...
Mathematic simulation for the rock mass destruction by blasting
Modeling of rock mass destruction by explosion allowed to obtain mathematical models of the formation of crushing zones, intensive grinding and crack formation, which are formed around the charging cavity in the rock mass ...