R.Y. Poderni, I.Y. Pyatova
Math Model of the H-meter Bench Drilling by means of Drill Rig having weight gradation as –light, middle and heavy, equipped with Hydrostatic Drive and power Pack, had been developed. Parsed Dates of SinglePass and MultyPass drilling procedure were analyzed. The impact of the Hydrostatic Drive type upon its Efficiency and Productivity were determined.