Patent ID: 9689131
Date: 2017-06-27
CPC Classifications: E02B,E02D

Claim:
1. A water collecting structure for collecting water from an upstream side to a downstream side between a first soil layer and a second soil layer located below the first soil layer, the structure comprising: a water repellent sand layer that is provided on the second soil layer, the water repellant sand layer having an upper surface slanted downward from an upstream side of the water repellent sand layer to a downstream side of the water repellent sand layer, and is made of a plurality of particles to which water repellent treatment is applied; a water conveying belt portion including a gravel layer and a culvert, the gravel layer being located on the upper surface of the water repellent sand layer so as to be slanted downward from an upstream-side end to a downstream-side end and being made of a plurality of gravel particles larger in diameter than the plurality of particles with the water repellent treatment of the water repellent sand layer, the culvert being located between the water repellent sand layer and the first soil layer and having a drain hole that is slanted downward from an upstream-side end of the culvert to a downstream-side end of the culvert, the water conveying belt portion being located on the upper surface of the water repellent sand layer and below the first soil layer and allowing water flowing from the first soil layer into the gravel layer or the drain hole in the culvert to flow from an upstream-side end of the water conveying belt portion to a downstream-side end of the water conveying belt portion; a water shield wall that is provided to surround at least the downstream-side end of the water conveying belt portion and has a through hole that the culvert penetrates; a reservoir that stores water discharged from the drain hole in the culvert that penetrates the through hole in the water shield wall; and a water conveying wall that is located on an upstream side of the water shield wall and is made of dry masonry gravel so as to have a lower end in contact with the water conveying belt portion.