Water injection test device for phreatic well

The utility model discloses a water injection test device for a phreatic well. The interior of a simulation box is provided with a groove, wherein the cross section of the groove is shaped like a fan, and the central angle of the fan is not less than 30 degrees. The interior of the simulation box is also provided with a water drainage cavity which is communicated with a circular arc permeable wall of the fan-shaped groove; a circular arc water well wall which is concentric with the circular arc permeable wall and divides the fan-shaped groove into a phreatic water injection well and a simulation cavity with a water-bearing stratum; a constant water head overflow box which is located at the end of the phreatic water injection well of the simulation box and communicated with a water tank and the phreatic water injection well; and a water drainage box which is located at the position of the water drainage cavity of the simulation box and communicated with the water tank and the water drainage cavity. An injection tracer agent box is disposed at a position, closer to the phreatic water injection well than the simulation cavity, of the top of the simulation box. A bottom plate of the injection tracer agent box is provided with a simulation rain hole, and the top of the injection tracer agent box is provided with a tracer agent box. At least five groups of pressure measurement pipes are vertically disposed on a wall of the simulation cavity in an equidistance manner. The device can enable person to visually know the features of the movement of water in a well towards to the phreatic water-bearing stratum and the distribution law of water heads in a process that water is stably injected into the phreatic well, and carries out a test and parameter measurement.