在钻孔灌注桩成桩工艺中，初灌时普遍采用剪塞法。笔者在多年的施工实践中，认为剪塞法存在以下缺。《：（1）隔水塞每桩至少一个，需专门制作，费工、费时；（2）具有堵管隐患，可导致初灌失败，特别是在较深孔中；（3）初灌量大时，隔水塞强度要求高，巨不易悬吊。为此设计了 In the bored pile construction process, the shear plug method is commonly used in the initial irrigation. In years of construction practice, the author believes that the shear plug method has the following deficiencies. <<(1) At least one stopcock per pile requires specialized production, which is time-consuming and time-consuming; (2) It has a hidden danger of blocking the pipe, which can lead to initial failure, especially in deeper holes; (3) Initial filling volume When large, the plug requires high strength, giant is not easy to suspend. Designed for this