Open mining pit backfill pipeline laying method

The backfilling pipeline laying method for the open mining pit comprises the following steps: S1, arranging a filling and stirring station adjacent to the open mining pit on the peripheral side of the open mining pit; s2, an inclined groove is excavated in the open-air slope in the open-air mining pit with the filling and stirring station as a starting point, and the inclined groove is obliquely arranged from top to bottom; s3, a first backfill pipe is laid in the chute, so that the first backfill pipe in the chute is obliquely arranged from top to bottom; s4, a second backfill pipe leading to the slope bottom of the open-air slope is laid on the open-air slope, and the filling and stirring station, the first backfill pipe and the second backfill pipe are sequentially communicated from top to bottom; and S5, the second backfill pipe is fixed to the open-air slope through a fastener. Therefore, the laying method for the backfill pipeline of the open mining pit has the advantages of facilitating self-flowing of