Multifunctional indoor unsaturated soil rainwater infiltration simulation test device

Disclosed is a multifunctional indoor unsaturated soil rainwater infiltration simulation test device. A plurality of water permeable holes are formed in the middle of an experimental device platform, a cuboid detachable rigid protection wall is connected with the positions, corresponding to the water permeable holes, of the upper surface of the experimental device platform, a sealed pressure bearing water container with water pressure adjustable is arranged on the lower surface of the experimental device platform, a plurality of reserved holes are formed in the outer wall of the cuboid detachable rigid protection wall, and the pressure bearing water container and a sealed water supply tank are connected with a pressure pump through air pressure valves. According to the technical scheme, the device has the advantages that the pressure pump and a flow control valve are adjusted, the rainfall intensity and rainfall duration are controlled to simulate various rainfall work stations, and sensors inserted into the reserved holes of the rigid protection wall can monitor the unsaturated soil water content, matrix suction force and other physical mechanical parameters in time in the rainwater or underground water level rising process.