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试验研究方法的发展,特别是纵向脉冲和反射脉冲方法的出现,可以使我们在工具处于动载情况下来研究岩石的破碎过程[1]。用凿岩工具冲击(脉冲)破碎岩石表层的过程的研究表明,每一瞬时的破碎特性取决于接触力 F 与工具凿入岩石的速度 V 之比。对每一种岩石来说,在一定的比率 F/V范围内,岩石破碎伴随着强烈的裂缝形成和断裂出现。然后,当上述比值转到下一范围时,岩石经压碎和进一步挤压而破碎。破碎
The development of experimental methods, especially the emergence of longitudinal and reflected pulses, allows us to study the fragmentation of rock while the tool is under dynamic loading [1]. A study of the process of impinging (pulsing) a rock surface with a rock drilling tool shows that the crushing behavior at each instant depends on the ratio of the contact force F to the velocity V at which the tool is rocked into the rock. For each rock type, rock fragmentation is accompanied by intense fracture formation and fracture at a range of F / V ratios. Then, as the ratio goes to the next range, the rock is crushed and crushed further. broken