目前,高层建筑及多层建筑多采用预制构件及现浇钢筋混凝土结构,电气管线多用聚氯乙烯塑料管暗敷。个别聚氯乙烯塑料管在施工中,由于振捣、踏踩、碰撞、钢筋的挤压等原因,造成管子折弯阻塞,需要进行疏通处理,发生位移的需要移位。这时混凝土强度已经很高,剔凿十分费力,找到阻塞处后,还需扩大剔凿范围,方能将管 At present, high-rise buildings and multi-storey buildings mostly use prefabricated components and cast-in-place reinforced concrete structures. The electrical pipelines are mostly covered with PVC plastic pipes. In the construction of individual PVC plastic pipes, due to vibrating, stepping on, collisions, and extrusion of steel bars, the pipes are bent and obstructed, and they need to be dealt with. The displacement needs to be shifted. At this time, the strength of the concrete is already very high, and it is very laborious to cut the chisel. After finding the obstruction, it is necessary to expand the cutting range so that the tube can be piped.