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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 36 for “"fractured rock"”.
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Estimation of Grout Absorption in Fractured Rock Foundations
Made available in DSpace on 2014-12-11T18:09:58Z (GMT). No. of bitstreams: 1 7219931.pdf: 11127585 bytes, checksum: 570be27e2db9047c6396382199ed8e4b (MD5) Previous issue date: 1972
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Analytical and Numerical Modelling of Thermal Conductive Heating in Fractured Rock
… site remediation. Modelling was conducted in a fractured bedrock environment containing a system of parallel, equally-spaced horizontal fractures. A semi-analytical solution to the two-dimensional heat conduction equation was developed and used to study temperature distributions between two …
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Failure of fractured rock masses in periglacial environments.Experimental investigations on freeze-thaw induced damage.
L'abstract è presente nell'allegato / the abstract is in the attachment
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Use of hydraulic tests to identify conceptual models of heterogeneity for fractured rock aquifers
… sites throughout the world are located in fractured rock formations. Responsible management of these resources and sites requires appropriate field characterization studies and modeling techniques to assess the impact of management alternatives. Characterization and modeling of aquifers is …
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The effects of fluid pressure changes on fractured rock elastic moduli and surface deformation
Reservoir models use the elastic moduli of rock, both bulk and shear, to compute deformation. These moduli may change with pressure and fracture density, but this effect is usually left out of models. This work shows effective elastic moduli of fluid-filled fractured rock through a self consistent …
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Processes Governing Rapid Recharge Events in a Shallow Fractured Rock Aquifer Having Minimal Overburden Cover
… overburden cover on controlling recharge to a bedrock aquifer, specifically focusing on rapid recharge events. Rapid recharge events have been observed in a fractured rock site in eastern Ontario and fractured rock sites around the world. The mechanisms that cause these events are poorly …
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Rock Outcrops in the Canadian Shield: an Investigation of Contaminant Transport From Surface Sources in Fractured Rock Aquifers
Flow, recharge and transport dynamics in fractured rock aquifers with low lying rock outcrops is a largely unexplored area of study in hydrogeology. The purpose of this thesis is to examine these topics in an agricultural area in Eastern Ontario. The study consists of a regional scale groundwater …
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A Numerical and Statistical Analysis of the Fractured Rock Aquifer System in Ploemeur, France to Quantify Local and Regional Recharge
… quantification is compounded when considering a fractured rock aquifer system, where classification and modeling is complicated by highly complex structural geology. However, the ability to distinguish the character and geometry of fractured rock aquifers is indispensable for quantifying recharge …
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Evaluation of Spring Discharge for Characterization of Groundwater Flow in Fractured Rock Aquifers: A Case Study from the Blue Ridge Province, VA
… also suitable for use in other locations where fractured rock and crystalline rock aquifers are common.
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Evaluating Preferential Recharge in Blue Ridge Aquifer Systems Using Saline Tracers
… structure on groundwater recharge at the Fractured Rock Research Site in Floyd County, Virginia. Tracer migration was monitored through soil, saprolite, and fractured crystalline bedrock for a period of 3 months with chemical, physical, and geophysical techniques. Potassium chloride (KCl) …
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An investigation into the lithological source of iron in the Kammanassie Mountain aquifer
… The Table Mountain Group (TMG) aquifer is a fractured rock aquifer situated in the TMG and rock samples were taken from the various lithologies in the area.
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Characterization of a hydraulically induced bedrock fracture
… This process extends and widens existing bedrock fractures, allowing groundwater storage to increase. Researchers have studied the behavior of fractured-rock aquifers for decades, but little has been published on the hydraulic and mechanical properties of hydraulically enhanced fractures. In …
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A statistical approach to understanding microcosm methods for microbially mediated dechlorination of trichloroethene in bedrock aquifers
… dechlorination of trichloroethene (TCE) in fractured rock aquifers. Microcosms constructed with unincubated crushed rock in groundwater provided the best microcosm model of in situ TCE degradation, when prepared and incubated to simulate the in situ environment. Microcosms constructed with …
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A Study of the Coupled Hydromechanical Behavior of Jointed Rock Masses Around Pressure Tunnels
In fractured rock masses with continuous joints which daylight middle to steeply inclined valley walls $(\beta>20\sp\circ),$ failure by hydrojacking was preceded by sliding of a wedge toward the valley side and opening of steep joints. This observation was used to formulate a criterion for failure …
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Physical Investigation of Field Scale Groundwater Recharge Processes in the Virginia Blue Ridge Physiographic Province
Physical and geophysical data collected at the Fractured Rock Research Site in Floyd County, Virginia indicate that recharge rates to the subsurface are controlled by a small scale thrust fault associated with regional thrust faulting within the Blue Ridge Province. Recharge rates appear to be …
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Conceptual models of fluid flow in fractures
… region of nuclear waste canisters emplaced in fractured rock. Fluid near the canister will evaporate and move into the fractures where it condenses on the walls of the fracture. It is then absorbed by the matrix due to the capillary suction. Then, due to the capillary force, the liquid moves …
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Hydrogeologic Controls on Lake Level at Mountain Lake, Virginia
… of a forested first-order drainage system in fractured rock, 3) the influence of a fault not previously discussed in literature regarding the lake, and 4) the possibility of flow pathways through karst features. Results from a water balance indicate steady lake drainage and significant …
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