Hydraulic Punching Machine

Hydraulic Punching Machine

This is a hydraulic punching machine used for drilling holes in coal seams with self-spraying capabilities. It employs drill bits to cut and pressure water to wash the coal body, triggering spray holes to discharge crushed coal and gas. This machine is intended to release protrusion potential, thereby reducing or eliminating the risk of outbreaks, by drilling holes into self-spraying capable coal seams using high-pressure water-equipped drill bits.

The hydraulic punching pressure relief and permeability enhancement measure is executed under the protection of rock pillars. After drilling, medium to high-pressure water is used through an efficient nozzle to impact the coal body surrounding the borehole. This process expels a large amount of coal and gas, causing stress to concentrate around the punched area, leading to pressure relief and increased permeability of the coal body near the punched area. This effectively enhances the extraction efficiency.