Search for dissertations about: "sinkholes"
Found 4 swedish dissertations containing the word sinkholes.
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1. Predicting surfacing internal erosion in moraine core dams
Abstract : Dams that comprise broadly and widely graded glacial materials, such as moraines, have been found to be susceptible to internal erosion, perhaps more than dams of other soil types. Internal erosion washes out fine-grained particles from the filling material; the erosion occurs within the material itself or at an interface to another dam zone, depending on the mode of initiation. READ MORE
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2. Suffusion of Glacial Till Dam Cores : An Experimental Investigation
Abstract : Suffusion, also called internal instability, is an internal erosion mechanism that occurs in embankment dams when fine-grained particles are washed out of the core soil matrix by seepage. Initiation of internal erosion depends mainly on three major factors: grain size distribution of the soil, stress conditions and hydraulic load; whilst its continuation depends of the filter properties. READ MORE
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3. Investigation of Suffusion in Glacial Till Dam Cores : Testing methods and critical hydraulic gradients
Abstract : Suffusion is an internal erosion mechanism that occurs in embankment dams when fine grained particles in the dam core are washed out by seepage. Initiation of internal erosion depends mainly on three major factors: grain size distribution of the soil, stress conditions and hydraulic gradient; whilst its continuation depends on the properties of the filter. READ MORE
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4. Geometrical controls on spectral induced polarization in time and frequency domain
Abstract : What can we learn by transmitting electrical currents through electrodes in the ground? Geophysical methods can help us to locate the bedrock, valuable mineral ores, remains of ancient buildings and many other secrets hiding below the surface. However, it is not only the universal interest for the unknown that drives the geophysical research forward. READ MORE