Multi-layer slip zone landslide model test system and method under action of reservoir

The invention relates to the field of engineering geology, in particular to a multi-layer slip zone landslide model test system and method under the action of a reservoir. A multi-layer slip zone landslide model test system under the action of a reservoir comprises a test box, a slip zone slip mass model, a reservoir simulation unit, a loading plate, a thrust loading device and a data detection device, the slip zone slip mass model comprises multiple layers of slip zone slip mass compositions, and the slip zone slip mass compositions are sequentially distributed in the vertical direction; the slip band and slip mass composition is composed of a slip band layer and a slip mass layer, a slip bed is arranged in the test box, the slip band and slip mass model is arranged on the slip bed, the liquid inlet end of the reservoir simulation unit is communicated with the interior of the test box and is used for conveying test water into the test box, the loading plate is vertically arranged in the test box, and the loa