Research on coal resources city brown field ecological transformation under the concept of sponge city

This paper analyzed the ecological predicament of sponge city concept and current coal type resource city, proposed the method applied the sponge city concept to coal resource type city ecological transformation, and discussed from transformation of city construction concept, im-provement of city cavernous quality and quantity aspects, aimed at combining with the coal type ecological city brown field ecological transforma-tion and construction of sponge city, realized the brown field ecological transformation of coal ecological city.