| 摘要 |
PURPOSE: A non-exposure drain pipe and a manhole for cleaning are provided to prevent a nonpoint pollution source from flowing into a drainage way, and to prevent a drain port from being blocked. CONSTITUTION: A non-exposure drain pipe and a manhole for cleaning form a U-shaped drainage way with a hauling hole(11) and an upper reinforcing grid(8) using cement, HDPE, or FRP. An upper pressure support(3) is manufactured using cement, HDEP, cast iron, and FRP and forms a drainage way. Rubble(5) is formed on the upper pressure supporter. Urethane binder is spread on the top of the rubble, and the rubble is stabilized. The upper reinforcing grid is filled with elastic chips(10). |
