PURPOSE: An environmentally-friendly construction method of a mountain reservoir using a solidified material is provided to construct a high-strength dam in a short time using soil on a construction site. CONSTITUTION: An environmentally-friendly construction method of a mountain reservoir using a solidified material is as follows. The ground of a construction position is cut, and a soil cement mixture is produced by mixing soil generated when the ground is cut, cement, and a solidified material. The produced soil cement mixture is spread, and a foundation layer for an erosion control dam(23) and a foundation layer(33) for a reservoir dam are formed. Flow passages(21,31) are formed on the foundation layers. Concrete layers(24,34) are formed by placing concrete on the outer surfaces of the foundation layers. Vegetation layers(25,35) are formed by spreading culture soil having seeds on the outer surfaces of the concrete layers. A screen(22) for filtration and a water gate(32) are installed in the flow paths, respectively.
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