The equations of fluids in porous media are very useful in designing the rockfill and diversion dams, gabions, breakwaters and ground water reserves. Researches have been showed that the Forchheimer equation is not sufficient for the analysis of hydraulic behavior of free-surface radial flows; because, in these flows, in addition to the hydraulic gradient and velocity, the variable of radius is...

[1] A new technology, hydraulic/partitioning tracer tomography (HPTT), is proposed to survey spatial distributions of hydraulic properties and dense nonaqueous phase liquids (DNAPLs) in the subsurface. HPTT is nothing more than a set of multiple hydraulic/ partitioning tracer tests and synthesis of all the tests to map the spatial distributions. It involves injection of water at one borehole in...

Abstract Suffusion is the phenomenon responsible for internal erosion, and process by which finer soil particles are moved through constrictions between larger seepage forces. Generally, gap-graded known to be susceptible suffusion. Meanwhile, suffusion of well-graded silty sand resulting behavior not well understood. Moreover, previous researches on laboratory tests focused study critical hydr...

generally, the evaluation and assessment critical condition of rill formation are useful for a better understanding of soil erosion processes. the inherence characteristics of soils, which have much dynamic variations on the hill-slopes and are affected by rill formation, are the soil critical shear stress and soil erodibility factors. this study aims to assess experimental rill incision thresh...

The objective of the research was to provide a better understanding of the influence of hydraulic conductivity on the exit gradient for a rectangular block representing a root zone. A critical area of concern to design engineers is the exit gradient at the toe of the levee and other sensitive areas. If the exit gradient becomes too large, water flows too fast, thus creating the potential for pi...

[1] Wetland ecosystems are often characterized by distinct vegetation patterns. Various mechanisms have been proposed to explain the formation of these patterns; including spatially variable peat accumulation and water ponding. Recently, short‐range facilitation and long‐range competition for resources (a.k.a scale dependent feedback) has been proposed as a possible mechanism for pattern format...

Abstract This study develops a new numerical simulation model for rubble mound failure prediction caused by piping destruction under seepage flows. The has been pointed out as significant cause of breakwater during tsunamis. Once boiling and heaving occur on the surface, suddenly propagates in opposite direction flow. For prediction, coupled fluid-soil-structure simulator is developed combining...