Anti-scour structure of sandy foundation water gate

The utility model relates to an anti-scour structure of a sandy foundation water gate. The anti-scour structure orderly comprises an apron mortar laid stone section, a key-wall, an apron dry stone section and an anti-scour trough in the water flowing direction, wherein a steel sheet pile seepage interception wall is built between the apron dry stone section and the anti-scour trough; the apron dry stone section orderly comprises apron dry stone blocks, an apron broken stone hardcore, a medium-coarse sand inverted filter layer and geotechnical cloth from top to bottom; anti-scour trough dry stone blocks are arranged at the bottom and the upstream slope of the anti-scour trough while an anti-scour trough broken stone hardcore is arranged at the lower part of the anti-scour trough; a connection section is arranged between the anti-scour trough and a downstream river channel. The anti-scour structure is used for releasing osmotic pressure, preventing seepage from emptying a foundation, and preventing turbulent vo