Simulation test system and test method for ground subsidence caused by pumping confined water

The invention discloses a simulation test system and test method for ground subsidence caused by pumping confined water. The system comprises a main box, a surrounding layered water inlet box, a constant water head water tank, a water pumping device and a data acquisition system. A sand clay sample is laid in the main box, the three sides of the surrounding layered water inlet box surround the outer side of the main box, and water inlet holes I communicated with the surrounding layered water inlet box are distributed in the side wall of the main box; a lifter is arranged at the bottom of the constant water head water tank and connected with the water source pool and the surrounding layered water inlet tank through pipelines; the water pumping device comprises a water pumping well, a peristaltic pump and a silicone tube, the water pumping well comprises a well wall and a water pumping well entity and is connected with a settling pond through the silicone tube and the peristaltic pump, and the settling pond is