Leakage prevention structure for reservoir

The utility model provides a leakage prevention structure for a reservoir. The leakage prevention structure comprises a protective layer arranged on the surface of the reservoir, a geomembrane layer, a cushion layer and a leveling layer, wherein the geomembrane layer comprises a plurality of composite geomembranes; a first pressure plate structure is arranged at a joint of every two adjacent composite geomembranes, and comprises a first pressure plate and a first countersunk bolt; the joint of the every two adjacent composite geomembranes is pressed by the corresponding first pressure plate; the first countersunk bolts are fixedly connected to a first embedded part below the surface of the reservoir after sequentially penetrating through the first pressure plates, the composite geomembranes, the cushion layer and the leveling layer; the surface of the reservoir has corners; second pressure plate structures are arranged on the parts, positioned in the corners of the surface of the reservoir, of the composite g