Patent ID: 9686923
Date: 2017-06-27
CPC Classifications: A01G

Claim:
1. An artificial soil structure comprising: a water shield layer provided on a soil layer, the water shield layer including water repellent sand throughout an entirety of the water shield layer, the water repellent sand being processed by a water repellent treatment; a water retentive layer provided on the water shield layer, the water retentive layer including water retentive sand without any water repellent treatment; and at least one water repellent column penetrating through the water shield layer and contacting the soil layer and the water retentive layer so as to allow the water retentive layer to communicate with the soil layer via the water repellent column, the water repellent column including water repellent particles throughout an entirety of the water repellent column, the water repellent particles being processed by the water repellent treatment; wherein the water shield layer has a water infiltration pressure higher than a water infiltration pressure of the water repellent column.