Thermal recovery process of a backfilled open-pit in permafrost area at the Gulian strip coal mine in Northeast China
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DOI: 10.1007/s11629-017-4439-3
Abstract: Timely and proper backfilling of open-pits in strip coal-mines has been an effective measurement for the recovery of the hydrothermal regimes and ecological environment in permafrost regions. In this study, numerical simulations and statistical regressions… read more here.
Keywords: recovery; thermal recovery; strip coal; backfilled open ... See more keywords
Experimental study on excavating strip coal pillars using caving zone backfill technology
Sign Up to like & getrecommendations! Published in 2018 at "Arabian Journal of Geosciences"
DOI: 10.1007/s12517-018-3914-7
Abstract: Strip mining was the major method to control surface subsidence when mining under buildings in China; however, its coal recovery ratio was only 30 to 50%, resulting in a large amount of coal resource waste… read more here.
Keywords: backfill; strip coal; excavating strip; coal pillars ... See more keywords