| 摘要 |
PURPOSE: A drainage system for non-point pollutant source using separate drain pipe and drain hole is provided to ensure smooth drainage without the exposure of a drain hole and remove the inconvenience of passage caused by water staying in the drainage. CONSTITUTION: A drainage system for non-point pollutant source using separate drain pipe and drain hole comprises a bottom part, a bent bottom member(5), a U-shaped drain pipe(1), and a drain hole. The bottom part is formed in the underground of a road. The bent bottom member forms a sidewall part. The U-shaped drain pipe is in contact with the top of the bottom part and forms a side wall and an upper wall of a drainage(10) buried under the road. The drain hole is formed a space between the sidewall of the cent bottom member and the side wall of the U-shaped drain pipe in order to guide subsurface water on the road surface into the drainage. |
