Compaction sand pile casing pipe injection monitoring control method

The invention provides a compaction sand pile casing pipe injection monitoring control method. The compaction sand pile casing pipe injection monitoring control method comprises the following steps that a tonnage meter is arranged under a pulley block system pulling a pile casing pipe, a single-rope pull force of a steel wire rope is converted through metering of the tonnage meter, the tonnage meter is connected with a control module of an electrical control system, a winch is controlled to take up or pay off the steel wire rope, it is ensured that the steel wire rope is always in a tightened state, and the situation that the pile casing pipe is in an unrestrained state at a return stage and at an injection stage and accordingly a runway clearing accident is caused is avoided; reasonable pulling speed can be ensured, and construction quality and working efficiency can be ensured. A sand surface meter for reflecting sand falling speed and a pressure sensor for reflecting pressure in the casing pipe are further arranged in the pile casing pipe, the sand falling speed and the pressure in the casing pipe can be mutually associated through an electrical control system, the sand falling speed can be stable, and automatic construction degree and construction efficiency are high. By means of the compaction sand pile casing pipe injection monitoring control method, the labor cost in the construction process is greatly saved, and the compaction sand pile casing pipe injection monitoring control method is high in economical efficiency.