Standardization of the output of self-propelled scrapers

Conclusions

• 1. During earthworks by self-propolled scrapers it is necessary to take into account not only the hauling distance but also deepening of the borrow pit when standardizing their output.

• 2. Deepening of the borrow pit, e.g., by 10 m reduces the output of the MoAZ-546P-D-357M scraper by 27% for a 160-m haul and by 22, 18, 12, and 9% for respective hauls of 250, 400, 630, and 1000 m, i.e., deepening of the pit has a considerable effect on output for short hauls and negligible effect for hauls greater than 400 m.

• 3. The number of scrapers per pusher tractor during earthworks should also be corrected not only with a change in the hauling distance but also with deepening of the borrow pit.