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.
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Showing 1 to 9 of 9 for “"cover systems"”.
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SPATIAL VARIABILITY OF THERMAL PROPERTIES IN RECLAMATION COVER SYSTEMS
Soil cover systems are an integral part of a mine reclamation program and are increasing in area. Knowledge of temperatures and thermal properties in the cover system provide important information regarding the energy balance, thermal regime, as well as preliminary insight into soil water content. …
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Design and optimization of a waste rock cover system for arid environments
Engineered waste rock cover systems are designed to prevent the generation of acid mine drainage in sulphide bearing waste rock dumps left from the metal mining process. Typically, the cover systems are designed to prevent the ingress of water and/or oxygen into the waste rock pile so that …
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Coal Combustion Waste Disposal Facility Design: Electric Power Cooperative Selby, South Dakota
… and associated plant air pollution control systems would be disposed at an onsite landfill. A 202-acre landfill with 10 percent slopes is proposed to manage approximately 685 tons of waste each day; a design capacity of 15,000,000 yd3 is required for the anticipated 50-year life of the …
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Investigations of water and tracer movement in covered and uncovered unsaturated waste rock
… of the hydrogeology of mine waste rock and cover systems is essential for the quantification, prediction and reduction of metals loading to the receiving environment. A series of experiments were conducted on an instrumented intermediate-scale waste rock pile at the Cluff Lake Mine in …
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Stability Analysis of Systems of Difference Equations
… is that they are discrete, recursive relations. Systems of difference equations are similar in structure to systems of differential equations. Systems of first-order linear difference equations are of the form x(n + 1) = Ax(n) , and systems of first-order linear differential equations are of the …
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Field Emissions of Methane and Nitrous Oxide from California Landfills
… and oil and gas operations, population density, cover conditions and percentage of cover types, age of waste, waste profile, landfill style and configuration, and disposal of waste tires. Fifteen representative sites were chosen for the aerial portion of testing, and of those fifteen, five sites …
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Elevated temperatures in waste containment facilities
… gas extraction, leachate collection, interim cover, and composite liner systems. These events can result in expensive remediation and warrant the permanent closure of the facility. The main objectives of this research are to: (1) identify causes and frequency of elevated temperatures; (2) …
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The Impact of a Planar Drainage Geocomposite in Unsaturated Soil
The effects of infiltration in geoenvironmental systems characterized by unsaturated soils subject to occasional significant precipitation events has been a subject of concern as practitioners look for improved methods to reduce pressures and divert water from foundations, mechanically stabilized …
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Development of co-disposal methods for coal discards and fine waste for the prevention of acid mine drainage
… (ARD). Far reaching consequences on water systems, vegetation, people and wildlife ensue as a result. To minimise the environmental burden, the acidic water resulting from the oxidation of sulphide minerals present in wastes from both active and abandoned mines is often treated with …