Recent work in Italy has been devoted to the analysis of the consolidation process in a soil layer drained by a system of parallel trench drains where the soil surface, though protected against evaporation, is not fed by water. Previous work had considered the soil surface covered by a water layer, thus acting as an equipotential of the seepage process. The difference between the two boundary conditions is rather significant in both the transient and steady state. In any real problem, the boundary conditions at the soil surface are likely to change continuously between the above limit, depending on the succession of rainy and dry periods at the particular site considered. The combined swelling and consolidation process resulting from intermittent rainfall is analysed, trying to give practical indications for the design of drain system.
Influence of intermittent rainfall on effectiveness of trench drains
DI MAIO, Caterina;
1987-01-01
Abstract
Recent work in Italy has been devoted to the analysis of the consolidation process in a soil layer drained by a system of parallel trench drains where the soil surface, though protected against evaporation, is not fed by water. Previous work had considered the soil surface covered by a water layer, thus acting as an equipotential of the seepage process. The difference between the two boundary conditions is rather significant in both the transient and steady state. In any real problem, the boundary conditions at the soil surface are likely to change continuously between the above limit, depending on the succession of rainy and dry periods at the particular site considered. The combined swelling and consolidation process resulting from intermittent rainfall is analysed, trying to give practical indications for the design of drain system.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
