Water seepage collapse treatment structure of soil slope containing sand soil layer and construction method

The invention relates to a water seepage collapse treatment structure of a soil slope containing a sand soil layer and a construction method. The method is suitable for the field of water conservancy and hydropower engineering. The technical problem to be solved by the invention is to provide the water seepage collapse treatment structure for the soil slope containing the sand soil layer and the construction method. According to the technical scheme, the water seepage collapse treatment structure for the soil slope containing the sand soil layer comprises geotechnical cloth, a pervious concrete layer, a graded broken stone backfill layer, a concrete frame beam, an inter-frame backfill soil layer and a vegetation layer; the geotextile is laid in a collapsed area and a non-collapsed area of the slope surface of the sand layer slope, the pervious concrete layer is arranged on the geotextile in the non-collapsed area, the graded broken stone backfill layer is arranged on the geotextile in the collapsed area and i