Тип публикации: статья из журнала
Год издания: 2019
Идентификатор DOI: 10.25018/0236-1493-2019-10-0-79-89
Ключевые слова: Clay rock mass, Ejecton, Jet gun, Jet impact, Jetng, Jetng efficiency, Mathematcal model, Mineral deposit, Modeling, Solid abrasive partcles
Аннотация: The most expedient approach to development of placers enclosed in clay host rock is jetting. The jetng efficiency can be improved using various structural techniques and technologies. The pressure flow practce widely involves ejecton of abrasives. For instance, hydro-abrasive cutting is based on this principle. However, hydro-abrasПоказать полностьюive cutng features small diameters of jets, considerable pressure heads and tght spacing to a treated object. The use of air ejecton in the pressure flow in the jet gun is known in mining, though there is no data on ejecton of solid partcles. Accordingly, this study aims to determine efficiency of ejecton of solid abrasive partcles in the pressure flow in the jet gun for development of rock mass with high content of clay through experimentaton at a scale of 1: 10 on a special test bench and mathematcal modeling using the test results. The experiments show the increase in the jetng efficiency by 4.8-7.4 tmes. The mathematcal model constructed using the experimental data allow predictng efficiency of jetng with ejecton of solid abrasive partcles at varied diameters of jet nozzle and jet-face angles. © 2019 Publishing house Mining book. All rights reserved.
Журнал: Mining Informational and Analytical Bulletin
Выпуск журнала: Vol. 2019, Is. 10
Номера страниц: 79-89
ISSN журнала: 02361493
Издатель: Publishing house Mining book