Physical modeling of hydraulic cleanup of extraction blocks in inclined ore bodies
This article contains the information devoted to the new kerving cuts mounting method during the tight rock and hard-shot ground roadheading. The authors offer to apply the kerving formed with a special spiral-shaped blast-hole instead of well-known angled and box cuts, which include several rectilinear blast-holes. The article also reveals the results of spiral kerving actual tests with different operation factors which confirm its real effectiveness while using.