| 摘要 |
An irrigation and drainage canal pipe for escape on a slope is provided to let animalcules such as frogs, snakes, etc. as well as people enter and leave easily through an inclined sidewall and to let water flow smoothly by forming one side wall almost perpendicularly and the other side wall in an incline. In a water channel shaped in the unit of the appointed length and installed on the boundary between a road and the fields, an irrigation and drainage canal pipe(100) for escape on a slope comprises a vertical sidewall(120) formed almost perpendicular to the bottom, an inclined sidewall(130) formed in an incline within the obtuse angle of 130 ~ 160 ‹ against the bottom, and ribs(132) for reinforcement protruded to the outside of the inclined sidewall at regular intervals. |
