MODELING CLAY ROCK JETTING WITH EJECTION OF SOLID ABRASIVE PARTICLES

The most expedient approach to development of placers enclosed in clay host rock is jetting. The jetting efficiency can be improved using various structural techniques and technologies. The pressure flow practice widely involves ejection of abrasives. For instance, hydro-abrasive cutting is based on this principle. However, hydro-abrasive cutting features small diameters of jets, considerable pressure heads and tight spacing to a treated object. The use of air ejection in the pressure flow in the jet gun is known in mining, though there is no data on ejection of solid particles. Accordingly, this study aims to determine efficiency of ejection of solid abrasive particles in the pressure flow in the jet gun for development of rock mass with high content of clay through experimentation at a scale of 1: 10 on a special test bench and mathematical modeling using the test results. The experiments show the increase in the jetting efficiency by 4.8–7.4 times. The mathematical model constructed using the experimental data allow predicting efficiency of jetting with ejection of solid abrasive particles at varied diameters of jet nozzle and jet–face angles.

 

Acknowledgements: This study was supported by the Russian Foundation for Basic Research, Project No. 19-35-90112.


For citation: Shkaruba N. A., Kislyakov V. E., Katyshev P. V. Modeling clay rock jetting with ejection of solid abrasive particles . MIAB. Mining Inf. Anal. Bull. 2019;(10):79-89. [In Russ]. DOI: 10.25018/02361493-2019-10-0-79-89.

Keywords

Mineral deposit, jet gun, jetting, clay rock mass, solid abrasive particles, jetting efficiency, ejection, jet impact, modeling, mathematical model.

Issue number: 10
Year: 2019
ISBN: 0236-1493
UDK: 622.236.52
DOI: 10.25018/0236-1493-2019-10-0-79-89
Authors: Shkaruba N. A., Kislyakov V. E., Katyshev P. V.

About authors: N.A. Shkaruba, Graduate Student, e-mail: nshkaruba@sfu-kras.ru, V.E. Kislyakov, Dr. Sci. (Eng.), Professor, P.V. Katyshev, Cand. Sci. (Eng.), Assistant Professor, Siberian Federal University, 660025, Krasnoyarsk, Russia. Corresponding author: N.A. Shkaruba, e-mail: nshkaruba@sfu-kras.ru.

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