The mining and cutting work of the room and pillar method

(1) Stage transportation lane

The stage transportation lane can be arranged in the vein or outside the vein (as shown in the figure, arranged outside the vein)

The advantages of 1 pulse-external acquisition are:

1) It is possible to store part of the ore in the ore discharge chute, thereby reducing the interaction between the electric ramp mine and the transport lane transport;

2) Conducive to the return of the mining column and the stope ventilation;

3) When the shape of the ore body is irregular, the flatness of the transport lane can be kept, which is conducive to improving the transport capacity and the like.

At present, China is a gold mine to use more foreign mining quasi-pulse mode.

The disadvantage of 2 pulsed outside is that it increases the amount of rock excavation work.

(2) mine drainage well

A mine is drilled in each mine. The mine that does not mine can be used for ventilation, pedestrians, and feeding. The slip is placed at the centerline of the mine. The cross section of the chute is 2 × 2 m ² .

3 up the mountain

Along the center line of the mine and close to the bottom of the mine, the mountain is climbed up (for the gently inclined ore body, the opened patio is generally called uphill) to facilitate pedestrians, ventilation and transportation equipment and materials, and as a free surface during mining. (section 2 × 2 m ² ).

4) Cutting the alley

Drill the cutting alley at the lower boundary of the mine.

The cutting alley is used as the free surface for the initial mining, and can also be used as a passage to the adjacent mine or as an electric ramp.

5) Contact the alley

Each mine room digs into contact with the alley. (refer to 6 in the figure) This roadway is used for returning wind.

6) Electric room

In the pillar below the mine, dig into the electric chamber, (in the interstage column)

Heavy Truck Bearing