Wall caving cutting work

1. Cutting the alleys - along the direction of the ore body at the lower boundary of the stope, and with each ore slippery. Cutting lane width = 2 meters, height = thickness of the seam. The function of cutting the alley is: as the free surface of the collapse; the second is the passage for ventilation and winch and pedestrians.

2, cutting the patio - cutting the patio, also known as cutting up the mountain, generally located on one side of the ore block, it connects the lower ore slipper and the upper safety road. The cutting well is 2 to 2.4 meters wide (requires a width to ensure the required working space for starting the mining). The height of the cutting patio is the thickness of the ore layer.

When the apex shale is relatively broken and the stability is very poor, the cutting and cutting open wells should be left 0.3 to 0.5 meters in advance when used as a protective layer, called the top mine, and then pick it up when it is recovered. .