DefinePK

Abstract

The Siberian Federal District of the Russian Federation has a significant number of placer gold deposits. Many of them are developed by hydraulic mining. Significant clay content in host rocks complicates the process of breaking them, which ultimately leads to an increase in the cost of work. Based on the authors’ earlier research, technological solutions for rock jetting with ejection of abrasive particles having density of 1.7 t/m3 are proposed to apply for overburden and mining operations in placers. The presence of solid particles in a jet makes it abrasive, and then it is possible to break the hard-to-wash clay mass with much greater efficiency, thus increasing rock jetting performance.