Authors: PetrovaL.V., SivcevaA.I., PetrovA.N., HoyutanovE.A.

Title of the article: The analysis of mining technology in conditions of «Obryv-razvalisty-promezhutochny»

Year: 2018, Issue: 3, Pages: 30-37

Branch of knowledge: Earth sciences

Index UDK: 622.016(571.56)

DOI: 10.26730/1999-4125-2018-3-30-37

Abstract: In the conditions of Obryv-Razvalisty-Promezhutochny placer deposits, the opening method and the choice of mining system were determined. The experience of permafrost placers underground mining was considered. It was decided to open the mine by conveyor and scraper inclines using access drifts. The choice of the mining system was made based on the analysis and generalization of the experience of underground mining of per-mafrost placer deposits in the North East of the Russian Federation. The most optimal option – chamber-longwall method - was accepted. The optimum parameters of the mining method, such as the chamber width, the width of the belt pillar, the length of the chamber, the minimum working-bed height were identified. The article gives a description of the placer mining technology. The drilling and blasting method was taken for driving mine roads with the consideration of the geological conditions of the deposit, the delivery of rock mass was to be performed by scraper winches LS-55-2SMA with box-type scrapers. The article also highlights the presence of hanging blocks and gives their description, the width of the interchamber pillars is determined with consideration of the specific features of the deposit, the scheme of the interposition of chambers and pillars of the upper hanging blocks and lower blocks on the placer rock bed is given.

Key words: placer deposits permafrost underground mining incline access drifts chamber-longwall mining interchamber pillar drilling and blasting room work

CITE DOWNLOAD