نتایج جستجو برای: surface mining

تعداد نتایج: 719231  

Journal: :Journal of the Southern African Institute of Mining and Metallurgy 2015

Journal: :Journal American Society of Mining and Reclamation 1997

Journal: :Journal of the Southern African Institute of Mining and Metallurgy 2015

2017
Rajchandar Padmanaban Avit K. Bhowmik Pedro Cabral

Mining for resources extraction may lead to several geological and associated environmental changes due to ground movements, collision with mining cavities and deformation of aquifers. Geological changes may continue in a reclaimed mine area, and the deformed aquifers may entail a breakdown of substrates and an increase in ground water tables, which may cause surface area inundation. Consequent...

Journal: :Journal American Society of Mining and Reclamation 1985

Journal: :Minutes of the Proceedings of the Institution of Civil Engineers 1894

Journal: :Proceedings of the National Academy of Sciences of the United States of America 2011
T Ty Lindberg Emily S Bernhardt Raven Bier A M Helton R Brittany Merola Avner Vengosh Richard T Di Giulio

Mountaintop mining is the dominant form of coal mining and the largest driver of land cover change in the central Appalachians. The waste rock from these surface mines is disposed of in the adjacent river valleys, leading to a burial of headwater streams and dramatic increases in salinity and trace metal concentrations immediately downstream. In this synoptic study we document the cumulative im...

2009
D. Walter V. Spreckels W. Hannemann

Underground mining activities lead to ground movements at the earth surface. An area-wide monitoring and the documentation of mining induced influences are required by the mining authorities. Work done in the past confirmed a significant potential of SAR interferometric methods to contribute information to such monitoring. Nevertheless, in spite of advanced SAR interferometric processing techni...

2004
Todd M. Ruff Thomas P. Holden

That is the daily challenge for the operators of the giant dump trucks used in surface mines. As a result, each year, an average of 20 accidents and three fatalities occur involving collisions between a piece of surface mining haulage equipment and either a smaller vehicle, a worker, or some other object. Another 21 accidents occur and three mining equipment operators are killed each year when ...

2014
Wei Zhang Dong-Sheng Zhang Li-Xin Wu Hong-Zhi Wang Brian Agnew

Large-scale longwall mining of shallow coal seams may cause mining-induced fractures that can project completely through to the surface. This could lead to a series of mine safety and environmental issues, further deteriorating the already fragile ecological environment in the Western mining areas in China. Therefore, an accurate and effective understanding of the spatiotemporal evolution law o...

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