Confining Pressure Influenced Tungsten Carbide Porous Nozzle II

Under the lower confining pressure, the velocity of broken volume decrease is faster. However, when confining pressure reaches a certain degree, the decrease scope reduces. With the number of pore increasing, aperture, depth and broken volume will decrease by the rising confining pressure. Different numbers of pores have different sensitivity to confining pressure. On one hand, too many pores will make each flow has little energy, smaller impact area and shorter spraying distance.

On the other hand, the ductility of rocks will promote with the increasing confining pressure, which turns brittle fracture into plastic collapse and all of them will increase the threshold pressure of jet-flow for cracking rock. Therefore, reducing pores appropriately under high confining pressure is beneficial for improving the efficiency of rock cracking.















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