Pond bottom waterproof structure of extra-large storage pond and construction process of pond bottom waterproof structure

The invention discloses a pond bottom waterproof structure of an extra-large storage pond, which comprises a rammed earth base layer, a gravel layer, a coal ash layer, a waterproof layer, a panax notoginseng soil layer, a sand cushion layer, a flat plate layer, a concrete layer, a waterproof blanket and a backfill layer which are sequentially arranged from bottom to top, after the waterproof tarpaulin is folded upwards to wrap the pseudo-ginseng soil layer, the sand cushion layer and the flat plate layer, the edge of the waterproof tarpaulin is fixed around the upper surface of the flat plate layer through the concrete layer; meanwhile, the invention discloses a construction technology of the pond bottom waterproof structure of the extra-large storage pond. According to the pond bottom waterproof structure of the extra-large regulation and storage pond, the waterproof performance of the regulation and storage pond is improved, the strength and anti-seismic performance of the bottom of the regulation and stora