System for retention of rainwater runoff and revitalization of compacted soil on sloping land, has trench formed in area of compacted soil in slope, where drainage base of cesspool is positioned between side surfaces of trench

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).