Modeling Field-Scale Transport of Weathering Products in Mining Waste Rock Dumps
نویسندگان
چکیده
منابع مشابه
investigation on the oxygen transport mechanisms in the sarcheshmeh waste rock dumps
introduction pyrite oxidation and acid mine drainage (amd) are the serious environmental problems associated with the mining activities in sulphide ores. the rate of pyrite oxidation is governed by the availability of oxygen (borden, 2003). therefore, the identifying oxygen supplying mechanism is one of the most important issues related to the environmental assessment of waste rock dumps (cathl...
متن کاملField epidemiologic studies of populations exposed to waste dumps.
Epidemiologic studies are required for assessing health risks related to toxic waste exposure. Since the settings in which such studies must be performed are extremely diverse, epidemiologic approaches must be versatile. For any particular study, three fundamental requirements are to assess what toxic materials are present, understand how human exposure may occur, and objectively measure possib...
متن کاملAN OVERVIEW OF PREDICTION AND CONTROL OF AIR FLOW IN ACID-GENERATING WASTE ROCK DUMPS By:
Air movement and associated oxygen transport through waste rock dumps has the potential to significantly enhance the rate of oxidation of pyrite-bearing material. While this is a desired outcome for most heap leach operations, airflow in waste rock storage facilities can result in significant increases in generation and acceleration of acid rock drainage. Hence, a good understanding of internal...
متن کاملThe Application of Digital Photogrammetry to Assess Long-term Stability of Minesite Waste Rock Dumps
Terrestrial close range digital photogrammetric methods were used to obtain three-dimensional data on erosion gullies associated with waste rock dumps at Newmont Australia’s Jundee gold mining operations. Digital stereo pairs of photographs were taken at each site and three-dimensional images produced using the CSIRO software package SIRO3D. Difficulties associated with producing accurate three...
متن کاملWeathering of waste rock in different climatic conditions – a kinetic freeze/thaw and humidity cell experiment
Ferrous and ferric sulphates and (oxy)hydroxides can grow on pyrite surfaces and slow oxidation rates. However, in northern climates, repeated freeze/thaw cycles can cause cracks, channeling and exposure of new surfaces. In the present study, weathering in a repeated freeze/thaw experiment was compared to a regular humidity cell experiment. Introductory results (after 17 weeks) show very small ...
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ژورنال
عنوان ژورنال: Journal American Society of Mining and Reclamation
سال: 1994
ISSN: 2328-8744
DOI: 10.21000/jasmr94010050