Test system for simulating whole process of landslide and debris flow disaster chain

The invention discloses a test system for simulating the whole process of a landslide and debris flow disaster chain. The system comprises a landslide sliding source area, a landslide accumulation area, a debris flow flowing area and a dust cover, and the landslide sliding source area comprises a landslide simulation platform, a monitoring platform and an observation platform; the landslide accumulation area is arranged close to the landslide sliding source area, is composed of an underground excavation space structure and is used for bearing a simulated landslide accumulation body; and the debris flow flowing area is designed to be L-shaped, is connected with the landslide accumulation area at the left side, is connected with the landslide sliding source area and the landslide accumulation area at the upper side and is used for simulating flowing of debris flow, an inverted-L-shaped circulating water filtering and pumping system is arranged at the end of the left side of the debris flow flowing area, and a c