This experiment system is used in physical model tests under 1g condition for foundation, slope, tunnel, and pile engineering to investigate the physical behavior and failure mode. The system consists of the steel structure box, the water-level control system, drainage pipe network, the loading system and the monitoring system. The steel box is 15 m long，6 m high and 5 m wide. The apparatus has the following functions: (1) Construction and loading of pile foundation; (2) Traffic cyclic loading; (3) Slope stability under water level; (4) Excavation of deep foundation pit; (5) Soft foundation treatment; (6)Marine geotechnical engineering.
