internal erosion


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internal erosion

[in′tərn·əl i′rō·zhən]
(geology)
Erosion effected within a compacting sediment by movement of water through the larger pores.
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Department of Energy grant of $210,920 to fund the study of internal erosion, particle transport and channelization driven by fluid flow.
The historic Battleship North Carolina, the most decorated of World War II, had suffered major external and internal erosion in its berth on the Cape Fear River.
The topics include the process of internal erosion in embankment dams and dikes, contact erosion between two soils, concentrated leak erosion, physics of sediment and aeolian transport, characterizing natural cohesive sediments and the water quality of rivers, and sediment transport and morphodynamics in nearshore areas.
Flow through soil pipes results in internal erosion of the pipes, which may produce gullies by tunnel collapse.
Among the topics are risk analysis of individual landslides in the Three Gorges Reservoir, the simultaneous modeling of internal erosion and deformation of soil structures, geotechnical properties of zinc and lead mine tailings from Tara Mines in Ireland, pH changes in solidified dredged materials, the rapid drawdown of the water table in layered soil column, and a mathematical model for determining the critical hydraulic gradient in soil piping.
In terms of internal erosion potential of the foundation, Mosul Dam is the most dangerous dam in the world .
Hard trim materials and a design that diffuses the discharge from the plug and seat and reduces internal flow velocities to minimise internal erosion further extends valve life.
Army Corps of Engineers decided recently to postpone study of the dam's vulnerability to earthquakes, so that the more immediate threat - a possible break in the dam due to internal erosion - can be fixed by the end of the year, project manager Mark Dasso said.
He speculates gravely on "what will result from an internal erosion of religious belief.
TBW's 15 billion gallon reservoir will undergo repair to fix cracks discovered on the internal erosion plates (the cement plates designed to curb erosion from wave action within the reservoir).
Stopping the 64-year-old clay dam's internal erosion is now on a fast track.
410), when, after comments on Simone Well, Hannah Arendt, and Czeslaw Milosz, he speculates sadly on "what will result from an internal erosion of religious belief" and concludes, "But where - and how - is the writer to be found who will have the inner certainty to see our lives with the eyes of faith and so make the world shine again?