@article{oai:niigata-u.repo.nii.ac.jp:00028379, author = {松本, 智 and 森井, 俊広}, issue = {1}, journal = {新潟大学農学部研究報告, 新潟大学農学部研究報告}, month = {Sep}, note = {傾斜したキャピラリー・バリアのもつ浸透抑制機能を利用すれば、地盤に浸透した降雨水を表層部で効果的に捕捉し、地盤深部への浸潤を低減できるため、地山斜面やため池堤防斜面などの斜面すべり防止技術への展開が可能となる。一方、キャピラリー・バリアを地表面の近傍で平面状に敷設すれば、土壌水を根群域に保水できるため、節水農業の効率化が可能となる。このような土のキャピラリー・バリアがもつ応用展開の可能性に着目し、傾斜キャピラリー・バリアによる斜面減災工法、ならびに平面状キャピラリー・バリアによる節水農法の現状を、既往の圃場実験に基づいてまとめた。, Capillary barrier is the simple soil layer system which is composed of a fine soil (sand) layer underlain by a coarse soil (gravel) layer. Water which infiltrates into the soil can be well retained above the interface between the sand and gravel layers because of the difference in hydraulic properties of the soil layer materials. In the case of a tilting interface, the water retained moves downward along the interface between the soil layers. This waterproof by the capillary barrier of soil with the tilted interface decreases rainwater infiltration into the deeper soil, and keep a soil slope stable. This special and attractive feature leads to a possible adoption of the capillary barrier as effective measures for slope protection of natural soil or embankment. On the other hand, in the case of a horizontal interface constructed in a farm field, water retained will be effectively consumed by plant growth. This water storage above the interface of the soil layers and within the plant root zone leads to another possible adoption of the capillary barrier as a water saving irrigation in the farm fields. In the paper, possible field applications of the capillary barrier of soil are reviewed based on results of some field experiments published previously.}, pages = {35--40}, title = {土のキャピラリー・バリア機能の応用展開に向けた研究}, volume = {62}, year = {2009} }