Patent ID: 8876432

Claim:
A method for manufacturing geological gradation featuring disaster prevention and ecologic function, comprising the following steps: preparing a fixed surface of soil, providing a gradation material for road construction, mixing hollow bodies in the gradation material to form a mixed gradation material, in which the hollow bodies are dispersedly distributed in the gradation material in a substantially uniformly scattered manner so as to be isolated from each other by a distance with a portion of the gradation material interposed therebetween, each of the hollow bodies having a shell delimiting an interior space that forms a receiving chamber, through apertures defined in the shell and in communication with the receiving chamber, the receiving chamber of each of the hollow bodies receiving therein a carbon-contained substance or an earth-improvement agent so that the hollow body serves as an earth-improvement hollow body, and laying the gradation material atop the prepared fixed surface to form a gradation that contains the hollow bodies uniformly distributed therein.