Abstract
Dwerige weir is a concrete hydraulic structure construct as flooding protect and water harvesting system for replenishment ground water in the area. The foundation comprised of highly erodible alluvial fan deposits. SEEP/W used to analysis foundation soil stability against piping erosion resulting from the water seeps. The two dimensions steady state model are selected, and saturated only materials used in the analysis. The results show that the soil need more actions to support the foundation during the weir economic life.
Highlights
The effects of water leakage beneath dams and other hydraulic structures are the main objectives of any project stability assessment
Et al [3] used SEEP/W finite element package to analyse the seepage flow under Diyala weir foundation. They concluded that the weir foundation corrosion of the sheet piles especially in upstream causing increasing seepages below the dam
The soil succession in Dwerige weir site comprised of granular soil (SM) cemented with cohesive materials (Figure 2.a). This soil tends intensely to erode by water seeps on and through soil particles. and there are many roads and hydraulic structures fails as a result of piping erosion (Figure 2.b)
Summary
The effects of water leakage beneath dams and other hydraulic structures are the main objectives of any project stability assessment. This leakage caused many serious problems in the structure foundation soils, like seepage erosion, soil heave, and uplift. Et al [3] used SEEP/W finite element package to analyse the seepage flow under Diyala weir foundation. They concluded that the weir foundation corrosion of the sheet piles especially in upstream causing increasing seepages below the dam. The cutoff installed to reduce the seepage effect and uplift pressure below dam base [5]. . 1.1 The problem of the Study
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