为了揭示聚能爆炸射流切割和破碎岩石的内在一般规律 ,利用超动态应变试验测试了岩石在点状聚能射流作用下的受力情况。试验表明 ,岩石在聚能射流作用下 ,除射流直接作用处为射流冲击、高温融熔破坏外 ,其整体破坏以切向拉伸破坏为主。另外 ,炸高、岩石是否受约束均会对聚能射流侵彻岩石的效果产生显著影响。 In order to reveal the inherent law of cutting and crushing rocks by using a polyblend blast jet, the force of the rock under the action of a point-shaped convergent jet was tested by using an ultra-dynamic strain test. Experiments show that the rock under the action of the convergent jet, except the direct impact of the jet jet impact, melt damage at high temperature, the overall damage to the main tangential tensile damage. In addition, high explosions and whether rocks are constrained will have a significant impact on the effect of the convergent jet penetrating the rock.