本文叙述了用X光透视法同时观察鼓包和空腔运动的方法,并给出了同样药量不同埋深下土中爆破的测试结果。土中爆破鼓包运动过程可分成两个阶段:第一阶段是由应力波在自由面反射造成的运动;第二阶段是由爆炸产物和空腔附近介质的固有运动造成的运动,这时可出现二次加速现象。第二阶段的出现,是由反射裂缝和由空腔发出的外行裂缝联通造成的。 This paper describes the simultaneous observation of the motion of the bulge and the cavity using X-ray fluoroscopy, and gives the test results of the soil blasting at the same dose and depth. The process of blasting drum motion in soil can be divided into two stages: the first stage is the motion caused by stress wave reflection in the free surface; the second stage is the motion caused by the inherent movement of the explosive medium and the medium in the vicinity of the cavity, Secondary acceleration phenomenon. The second phase is caused by the reflection cracks and the loose cracks in the cavity.