Determining the direction of the mining face direction during development of ravines pit surface

Purpose. Establish an effective direction of the mining front in beams locations at development a placer mineral deposit. Research methodology. The analytical method research was used for determining time pit section with crossed beam surface when applying schemes longitudinal and transverse movement front. graphical to analyze established dependences maximum allowable cutwidth into rock mass on length open scope scheme deposits. results. Schemes cross-beam have been developed, providing front, which make it possible determine main parameters system elements establish term life. Efficient use directions faces pitsection rugged terrain, makes reduce labor intensity process by 150–220 machine-shifts excavator field 300 900 m. Scientific novelty. influence cut width during is determined. results allow that increase from m, increases 140 740 Practical value. A using has developed. proposed movement, depending elements.