| 摘要 |
The system has a trench intended to retain rainwater (4), where the trench is formed in an area of compacted soil in a slope (2). The trench is formed with a side surface inclined along same direction as the slope, and another side surface inclined along direction opposite to the slope. A water retentive surface (331) is located above the level of the area of compacted soil in the slope. A drainage base (31) of a cesspool is positioned between the side surfaces of the trench, where the cesspool retains and drains the rainwater into groundwater (5). |
