Combined type permeation drainage structure of sponge city

The utility model discloses a combined seepage drainage structure of a sponge city. The combined seepage drainage structure comprises a road, the road comprises a cushion soil layer, a concrete layer, a leveling layer, a waterproof layer and a water seepage brick layer, water flowing grooves are formed in the two sides of the road, protective nets are arranged at the tops of the water flowing grooves and are in an L shape, and three sets of water flowing pipes are embedded in the inner bottom of the cushion soil layer; the sealing plate is installed in the water passing groove through the buffer springs, under the action of the buffer springs, the sealing plate can be located at the inner top of the water passing groove, it is guaranteed that the depth of the water passing groove is not too large, and when rainwater is large and water sources in the water passing groove are too much, the buffer springs can be compressed, so that the sealing plate moves downwards, and the water passing groove is sealed. And af