Utilizing the acoustic wave's characteristics, we can detect the interior structure and quality of the anchor system and, judge the anchorage state by beating the anchor bar's top with a hammer. 利用振动波传播具有的许多独特性质,可以在锚杆表面人工激发应力波来探测锚杆体系内部的结构和性质,以此来判断锚杆的锚固状态。
In the construction of anchor consolidating the foundation of architectures and underground constructions, the combination of conic Percussion-Rotary-Extruding Bit ( PREB) and pneumatic Down-the-Hole ( DTH) hammer was adopted forming Percussion-Rotary-Extruding Drilling Method ( PREDM). 在高层建筑和地下工程的地基加固而进行的土层锚杆施工中,采取圆锥形冲击回转挤密钻头与气动潜孔锤结合,形成了冲击回转挤密成孔的钻进方法。