Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 16 of 16 for “"Pumping tests"”.
-
Evaluation of Fracture Flow at the Coles Hill Uranium Deposit in Pittsylvania County, VA using Electrical Resistivity, Bore Hole Logging, Pumping Tests, and Age Dating Methods
… resistivity profiling, bore hole logging, a pumping test, and age dating and water chemistry. In this thesis groundwater flow is confirmed to occur from the Piedmont crystalline rocks across the Chatham Fault and into the Triassic basin at the study area as evidenced by pumping test data and …
-
ΥΔΡΟΓΕΩΛΟΓΙΚΗ ΕΡΕΥΝΑ ΥΠΟΛΕΚΑΝΗΣ ΚΑΛΑΜΠΑΚΑΣ (ΔΥΤ. ΘΕΣΣΑΛΙΑ)
… AQUIFERS WERE EXPERIMENTALLY DETERMINED THROUGH PUMPING-TESTS AND THEGROUNDWATER RESERVES WERE ASSESSED. THE HYDROCHEMICAL CHARACTER OF GROUNDWATER WAS STUDIED IN RELATION TO ITS SUITABILITY FOR DIFFERENT USES. FINALLY, THEMECHANISM OF GROUNDWATER RECHARGE WAS CLARIFIED AND A PROGRAM OF …
-
Hydrologic behaviour and hydraulic properties of a patterned fen in Saskatchewan
… through use of a surface loading test, pumping tests, and an enclosed field drainage test. None of these field tests have been previously described in the literature as having been used in peat environments. The combined results of field and laboratory drainage tests were used to obtain …
-
NUMERICAL ANALYSIS OF GAS FLOW WITHIN A MUNICIPAL SOLID WASTE LANDFILL
… of underground fire resulting from over-pumping or localized excessive wellhead vacuum. Thus, the development of tools for improved understanding and prediction of the gas flows and pressure distribution within MSW will potentially enhance operation of LFG extraction systems at existing …
-
Homopolar bearingless slice motors with magnet-free rotors for extracorporeal life support
… control systems, and conducted performance tests, including pumping tests with water saline, and bovine blood. The first prototype driving a D2 steel rotor achieves a maximum rotational speed of 1730 rpm in air, where the limit comes from the position sensor's noise and the resulting power …
-
The effects of seismic blasting on shallow water wells and aquifers in western North Dakota
… aquifers rather than in specific water wells. Pumping tests conducted in a sand and coal aquifer system showed no apparent physical effects when shots were detonated one quarter mile away from the pumping wells. Shots 500 feet distant resulted in no permanent effects. Shots 100 feet or closer …
-
Testing of a microrocket engine turbopump
… Rotordynamics issues have been investigated. Pumping tests were performed and have paved the way toward an effective pressure rise. The innovative rotor arrangement with coplanar pump and turbine was validated. Dual phase operation involving water and nitrogen as running fluids was achieved …
-
Development of a Method for Measuring Rock Mass Air Permeability and Applications to Underground Mining
… to estimate hydraulic properties, however, flow tests for permeability are challenging due to inconsistent flow. Pumping tests are not feasible due to associated stability concerns. Methods using air for estimating rock mass hydraulic properties were determined to be the best option for testing. …
-
Characterization of a hydraulically induced bedrock fracture
… flow pathway. The results of the aquifer tests indicated a decrease in both the transmissivity and storage coefficient of the fracture of three orders of magnitude after cessation of pumping. The aquifer temporarily experienced incomplete recovery following pumping tests, likely due to …
-
Development of a Groundwater Flow Model for Hungry Valley, Washoe County, Nevada
… Previous hydrogeologic assessments and pumping tests have consistently concluded that the aquifers are of limited extent. The aquifers are characterized by low transmissivities with storativity values indicating the aquifers to be confined. Groundwater pumping began in 1991 and a decline …
-
Hydrogeological investigation of the Naukluft mountains, southwest Namibia
… higher recharge than calculated. Reconnaissance pumping tests were conducted in a well and boreholes at Leybank, Naukluft Park office, Zais and Solitaire to estimate transmissivity. Results indicate that transmissivity ranges from 4.1 to 23.1 m2/d. storage coefficient was not estimated due to …
-
Geologic stochastic modeling of rock fracture systems related to crustal faults
… of the phreatic surface as observed in field pumping tests. They also pointed out the role of large discontinuities in fracture flow and the need to model large volumes of rock to account for it.
-
Characterization of the hydrostratigraphic units of the Sodwana area using the electrical resistivity method
… layer. Transmissivity values observed from the pumping tests conducted on the calibration boreholes were combined with VES results to define the transmissivity of the inferred deeper aquifer in between boreholes. The thicknesses of the geoelectric layers obtained from VES results showed a good …
-
Development of dual water supply using rainwater harvesting and groundwater systems
… yield by conducting a step drawdown and constant pumping tests. Electrical resistivity method (ERM) was first conducted to determine the depth of the existing tubewell. The results showed that the depth of the well was 20 m. Transmissivity (T) and hydraulic conductivity (K) values were 1.45 m2/d …
-
Field Investigation of Stream-Aquifer Interactions: A Case Study in Coastal California
… ecosystem support. The potential for groundwater pumping to deplete Scotts Creek stream flows is a source of serious concern for land managers, fisheries biologists, and regulatory agencies due to the presence of federally protected steelhead trout (Oncorhynchus mykiss) and coho salmon …
-
ΥΔΡΟΓΕΩΛΟΓΙΚΕΣ ΣΥΝΘΗΚΕΣ ΝΟΤΙΟΥ ΛΙΓΝΙΤΟΦΟΡΟΥ ΠΕΔΙΟΥ ΠΤΟΛΕΜΑΙΔΑΣ. ΠΡΟΒΛΗΜΑΤΑ ΥΠΟΓΕΙΩΝ ΝΕΡΩΝ ΚΑΙ ΑΝΤΙΜΕΤΩΠΙΣΗ ΤΟΥΣ ΚΑΤΑ ΤΗΝ ΕΚΜΕΤΑΛΛΕΥΣΗ
… RESULTS DEDUCED FROM THE DEWATERING SIMULATION A PUMPING RATE OF 3000 M3/HOUR AND 98 WELLS MUST BE DRILLED FOR THE DEWATERING AND PROTECTION OF THE MINE IN THE NEXT DECADE (1990- 2000). AN INVERSE OF GROUNDWATER FLOW PATTERN SOUTH OF THE EXCAVATION WILL OCCUR. THE MAIN AXIS OF FLOW WILL BE SOUTH …