The notch blasting mechanism is expounded by the fracture mechanics principle, the cutting tool parameters for notch presplitting blasting is put forward.

• 利用断裂力学原理阐明了切槽爆破机理,提出了切槽预裂爆破的刀具参数,依据现场初步试验成果指出了下一步应改进的切槽刀具参数。