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Showing 1 to 20 of 186 for “"Seepage"”.
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Seepage through longitudinal drainage trenches
… variables include the trench spacing (w), seepage depth (h), and slope angle (theta). In the experimental program, four values of slope angle, three values of trench spacing and three values of seepage depth were considered. Each experiment was performed twice to ensure that the …
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Seepage Rates in Closed Basins
Seepage is an important component of the water budget in closed basins that do not have surface water drainage features. In the shallow water table environment of Florida, internal drainage of soil controls flooding. With the recent rapid population growth and urban development in the state, a …
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Seepage investigation of Blackfoot River, Idaho
Made available in DSpace on 2016-11-09T23:47:56Z (GMT). No. of bitstreams: 2 5990272_opt.pdf: 6910302 bytes, checksum: 184228fffd65b5829623a6d949eef7cf (MD5) license.txt: 4183 bytes, checksum: 1dcc2037833d76bede73d5717587543b (MD5) Previous issue date: 1915
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Analysis of Transient Seepage Through Levees
… methods of evaluating levees with respect to seepage, erosion, piping and slope instability. Transient seepage analyses provide an effective method of evaluating seepage through levees and its potentially destabilizing effects. Floods against levees usually last for days or weeks. In response …
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Surging Seepage: A Triple Bond Accretion System
My current work revels in a state of flux. I strive for the work to be electrically charged, conveying a feverish sense of immediacy and vitality that implies motion and frenetic energy. The work is an accretion of brightly colored biomorphic forms that extend out from the wall and onto the floor. …
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Seepage induced instability in widely graded soils
… network of its coarser particles, as a result of seepage flow. Onset of internal instability of a soil is governed by a combination of geometric and hydromechanical constraints. Much concern exists for embankment dams and levees built using soils with a potential for internal instability. …
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Spatial Variability in Seepage from Unlined, Open Channels
… the use of temperature data for estimating seepage and hydraulic conductivity has been shown to have several advantages over many other methods, it shares a common disadvantage of being a point measurement. Because spatial variability in seepage is often an important factor, a new model …
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Seepage in earth slopes with longitudinal drainage trenches
… drains and on the time to reach steady state seepage under controlled laboratory conditions. An apparatus capable of simulating different slope angles and trench spacing was utilized in this study. By using this apparatus it was possible to obtain data regarding flow pattern, pressure heads, …
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RESISTIVITY IMAGING OF PROMINENT SEEPAGE PATHWAYS IN KARST TERRAIN
… zones associated with the presence of seepage pathways that were anthropogenic and/or natural in origin. Techniques including visual inspection (VI), multichannel analysis of surface waves (MASW), borehole control (BC), and aerial imagery (AI) were supplementally used to constrain the …
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The effects of groundwater seepage on stream regimen : a laboratory study
<p> The effects of' groundwater seepage on the competence, bed rough ness, and water surface slope of small streams were studied in two laboratory fumes. The larger fume is 20 feet long, 3t feet wide, and 18 inches deep; the smaller flume is 12 feet long, 6 inches wide, and 10 inches deep. Both …
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Use of Georphysics to Map Subsurface Features at Levee Seepage Locaitons
The Great Flood of 2011 caused moderate to severe seepage and piping along the Mississippi River levees in Northwest Mississippi. The aim of this thesis was to implement geophysical techniques at two seepage locations in order to give a better understanding of the causes of underseepage and …
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Transient Seepage Analysis for Levees and Dams: Numerical and Monitoring Approaches
… stage 11% of the time. An uncouple transient seepage model of a 2015 Mississippi River flood event that occurred at the Cairo levee showed that an uncoupled model could simulate the field measurements; however, the material properties that resulted in the most accurate simulation differed from …
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Seepage of Groundwater into the St. Clair River Near Sarnia, Ontario, Canada
… quantity, quality and source(s) of groundwater seepage from the streambed into the St. Clair River in the vicinity of Sarnia, Ontario, Canada. Seventeen survey lines were installed on the bed of the St. Clair River in a 100 m by 7 km band between Sarnia Bay and the Sarnia Indian Reserve. The …
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A Study on the Long-Term Performance of Seepage Barriers in Dams
In a vast majority of cases, seepage barriers increase the reliability of dams. However, it is important to recognize that seepage barriers often drastically increase hydraulic gradients around the boundaries of the barrier, and through any windows or defects in the barrier. The result is increased …
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Geoelectric monitoring of seepage in porous media with engineering applications to earthen dams
… methodology is developed for investigating seepage and internal erosion in earthen dams with time-lapse measurements of self-potential anomalies associated with conservative salt and non-conservative heat tracer migration in the subsurface. The method allows for 1) detecting seepage zones in …
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Comparison of Groundwater Seepage Modeling in Approximate Original Contour and Geomorphic Valley Fill Design
… termed Approximate Original Contour (AOC). Seepage from valley fills tends to be elevated with respect to calcium, magnesium, alkalinity and sulfates and there is evidence that, in high concentrations, these ions can contribute to stream degradation. New fluvial geomorphic principals are …
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Seepage monitoring and diagnosis of distresses in an earth embankment dam using probability methods
… result in catastrophic consequences. Considering seepage and internal erosion are accounted as one of the major causes of failure in earth embankment dams, it is essential to detect any concentrated seepage and sources of distress at early stages. A number of investigation and monitoring methods …
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The use of geophysical methods for dam seepage investigations and dredged oyster deposit characterization
… Missouri was effectively investigated for seepage through the dam and its outlet works using an integration of the electrical resistivity tomography, induced polarization and spontaneous potential geophysical tools. Recommendations were subsequently made based on the results of the study on …
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