张丽的毕业设计说明书(3)

Abstract

This open-pit exploitation and development design is applied to Damao Dong Yuan Iron Mine, with an annual output of approximately 1.7 million tons, the lowest level of mining is 1470 meters,the hight of step is 10 meters. Open-pit boundary is contoured with the application of the rule of boundary stripping ratio less than or equal to economic stripping ratio. And make a calculation of proved reserves and average stripping ratio. Throughput is verified by extension rate of the mine. When working out the open-pit excavation progress schedule, production stripping ratio is initially decided by the approach of average stripping ratio multiplied by coefficient while efficiency of electric shovel selected on the basis of similar mines.

The mine is exploited by vehicles along the slope of the spiral pit-line.

Techniques include the selection and calculation of drilling equipments, electric shovels, vehicles, bulldozer as well as assistant auxiliary equipments. Blasting method is the selection of dosage and calculation; shunting method is the selection as well as the selection of dumping and dumping calculation.

Keywords: open-pit mining; development; technology; excavation progress schedule