Vibro-replacement stone pile and rockfill reinforced earth and rockfill dam soft foundation treatment structure and construction method

The invention provides a vibro-replacement stone pile and rockfill reinforced earth and rockfill dam soft foundation treatment structure and a construction method. The construction method comprises the steps that a vibro-replacement stone pile group is arranged on a soft covering layer to reinforce a deep soft foundation of a dam foundation; the bottom of the stone pile is located on a covering layer compact layer or weathered bed rock; an earth and rockfill dam anti-seepage system is composed of a covering layer foundation anti-seepage wall and a dam body anti-seepage body; a foundation inverted filter cushion layer is arranged at the top of the stone pile on the downstream side of the anti-seepage wall; and a dam shell rockfill body reinforced area is filled at the upper part of an upstream side stone pile and the upper part of a downstream side foundation inverted filter cushion layer of the anti-seepage wall, so that the deformation modulus of a dam material at the lower part of adam shell is improved, th