Since the tamping foot remains on the ground during the compacting process, there is no risk of flying debris and no danger from a falling weight as with conventional dynamic compaction.
由于锤脚始终直接接地,避免和沖击下落所产生的潜在危险和碎片飞溅。
The feature common to all of them is that, like the hand forging hammer, they utilize the energy of a falling weight to develop the pressure needed for shaping the metal.