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Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 49 for “"piezometers"”.
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Monitoring Hydrology in Created Wetland Systems with Clayey Soils
… array of manually monitored wells and piezometers were installed. The electronic arrays contained a U.S. Army Corps of Engineers (USACOE) standard monitoring well, as well as piezometers and tensiometers at three depths. The manually monitored well + piezometer arrays (3 per location; 9 …
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Uma análise do comportamento das células de carga e dos piezômetros pneumáticos fabricados pela COPPE para utilização no metrô do Rio de Janeiro
… field, are examined: Load Cells and Hidraulic Piezometers. The Load Cells were utilized in the strutted diaphragm wall to measure the loads that were carried by the struts, while the Pneumatic Piezometers were utilized measurement of the pore-water pressure behind the walls and at the bottom …
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Design and in situ testing of a piezometer system to measure earthquake -induced pore -pressure changes
… being tested and damaged or destroyed some piezometers being tested. This thesis describes the design and field-testing of a piezometer system that allows in situ testing of the screens on the piezometer, and in situ calibration of the transducer. An intergral part of this system is a signal …
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Análise de dados piezométricos de um aterro sobre argila mole com drenos verticais
The purpose of this dissertation is to analyse piezometers data from Trial Embankment II of IPR-DNER on Sarapui’s soft clay with vertical drains. Initially, the excess poro pressure data from installed Casagrande and Hydraulic piezometers of all the sections are analised and compared. Follows a …
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Low cost monitoring system to diagnose problematic rail bed : case study of Mud Pumping Site
… viewing of data. The subgrade sensors consist of piezometers, accelerometers, liquid-based settlement probes, and temperature sensors (thermistors). The piezometers measure the long-term variation in the ground water table and short-term load induced pore pressures. The accelerometers measure the …
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Characterization of a Riparian Wetland Renwick Reservoir, Pembina County, ND
… content. Textural analysis was also conducted. Piezometers were designed and installed in the wetland to m onitor ground water movement. Stream gaging and water sampling were conducted one mile upstream from the reservoir to determine the volume and quality of water entering the reservoir. N …
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Evaluation of Groundwater Sodium and Sodium Uptake in Taxodium and its Hybrids on Galveston Island, Texas
… of the study area a three by three grid of piezometers, spaced 25 m apart north by south and 60 m apart east by west, was established and groundwater samples were collected from September 2018 to September 2019. Three Solinst Leveloggers were used in the easternmost piezometers in order to …
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The geohydrology and hydrogeochemistry of the proposed Garrison Lignite Mine
… Sentinel Butte at the mine site.</p> <p>Ninety piezometers in twenty-eight nests were installed at the Proposed Garrison Lignite Mine. Data from these piezometers show that the direction of groundwater flow in the pebble loam and silty clay is predominately downward into the lignite. Within the …
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Hydrologic investigation of three constructed mitigation wetlands and one natural wetland in West Virginia
… data were collected using monitoring wells, piezometers, automated water level recorders, and a water level meter. Meteorologic data were obtained from the National Oceanic and Atmospheric Administration's weather station in Elkins, West Virginia. Topographic data were collected using …
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Effects of Water Table Depth and Edaphic Characteristics on Plant Diversity in a Southern Mississippi Pitcher Plant Bog
… within pitcher plant bogs across seasons. Eight piezometers were installed at random distances to monitor long-term water table depth and pressure fluctuations along a ~710-meter line transect traversing upland and bog habitats. Vegetation sampling quadrats (n=128) were set up near each …
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Reanalysis of the settlement of a levee on soft bay mud
… (until early 2002), at which time URS installed piezometers to measure the existing consolidation stresses (s'vc) within the Bay Mud. URS also conducted state-of-the art field and laboratory test programs to develop well-defined values of preconsolidation stress (s'p) and compressibility …
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The impact of urban groundwater upon surface water quality : Birmingham - River Tame study, UK
… data was collected from installed riverbed piezometers and existing monitoring across the aquifer. Field data and supporting computer modelling indicated the convergence of groundwater flows from the sandstone/drift deposits and variable discharge to the river (0.06 to 10.7 …
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Estimating the Components of a Wetland Water Budget
… of one, and with gradients measured with nested piezometers. Seepage losses at the Manassas wetland were negligible. Overall, the water budget model provided conservative estimates of the available water in the wetland during the 10-month period of observation.
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Sedimentology and Shallow Groundwater Responses of a Coastal Marsh Along a Salinity Gradient: A Case Study In Grand Bay National Estuarine Research Reserve, Mississippi
… and conductivity monitored at the surface and in piezometers at depths of 0.75m, 1.5m, and 2.25m.</p> <p>Sediment analysis indicates reducing conditions throughout with redoximorphic concentrations of iron oxides and oxidation colors. Sediment is typically high in organic matter (avg 4.6% and up …
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Stress and strain rate estimates associated with penetrative deformation of the Harkless quartzite aureole rocks, Papoose Flat Pluton, California/Using structure contour maps to analyze subsurface 3D fault geometry along segments of the Moine Thrust
… 86-225 µm. The application of three calibrated piezometers results in differential stress estimates between ~11 and ~29 MPa. Published wet-quartzite dislocation creep flow laws combined with deformation temperature, water fugacity, and differential stress estimates infer strain rates that range …
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Evaluation of Seven Septic Systems on Representative Soil Settings in Greene County, Missouri
… and phosphorus levels in water collected from piezometers located in and near the lateral fields of these septic systems. The study was conducted from June 1999 to April 2000. The precipitation received across Greene County over this time period was 12.79 inches below normal. Two of the three …
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Comparative examination of Lake Spokane groundwater for nutrient discharge by residential development influence
… water and groundwater samples from hand-driven piezometers were collected from three residential development categories. The three categories were distinguished by proximity to residential development and onsite septic systems in relation to the shore line of Lake Spokane: nearshore, terrace and …
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The formation, properties and behaviour of coastal soft soil deposits at Perlis and other sites in peninsular Malaysia
… types of instrumentation, including pneumatic piezometers, inclinometers and settlements plates. Although two trial embankments were constructed at the trial site, the present research study only deals with the data obtained from the South embankment, which was constructed at a rapid rate of …
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2D ELECTRICAL RESISTIVITY AND HYDROLOGICAL STUDY OF A SOLUTE PLUME’S MIGRATION PATHWAY THROUGH SANDY LOAM WITHIN NACOGDOCHES COUNTY, TEXAS, USA
… The study area contained three preinstalled piezometers which are located in the Sparta Sand of the Eocene Claiborne Group, a regressive tract of the Eocene sea. Electrical DC resistivity surveys were conducted across one fifty-six-meter-long traverse using AGI’s multi-electrode SuperSting R8 …
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Modeling of pore pressure propagation and dissipation in compressible porous media
… the study of pore pressure responses in grouted piezometers and the pore pressure buildup in areas with rainfall-induced landslides failures. This phenomenon of pore pressure diffusion is coupled with Terzaghi’s theory of consolidation. For that purpose, an analysis of pulse tests (consisting of …
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