| 摘要 |
A composite drain member unified with a drain board and a perforated pipe is provided to maximize the dehydrating efficiency of soil by unifying many perforated pipes and drain boards, to minimize transformation under the ground by increasing the stiffness of a composite drain member and to be buried at the appropriate bending state according to geographical features. A composite drain member unified with a drain board and a perforated pipe comprises a pair of unit composite drain members(300), or many perforated pipes(32) composed of perforated pipe units(32A) and drain boards(31) composed of drain board units(31A). Hereon vertical wrinkles and many through-holes are formed on the inside and outside of each drain board unit and each perforated pipe unit to be bendable in the appropriate shape according to the location of rocks under the ground. |
