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Energies 2015, 8(5), 3628-3639; doi:10.3390/en8053628

Application of a Backfilling Method in Coal Mining to Realise an Ecologically Sensitive “Black Gold” Industry

1,2,†
,
1,2,3,* , 4,†
,
1,2
and
1,2
1
Key Laboratory of Deep Coal Resource Mining, Ministry of Education, China University of Mining and Technology, Xuzhou 221116, China
2
State Key Laboratory of Coal Resources and Safe Mining, School of Mines, China University of Mining and Technology, Xuzhou 221116, China
3
Hunan Key Laboratory of Safe Mining Techniques of Coal Mines, Hunan University of Science and Technology, Xiangtan 411201, China
4
Key Laboratory of Coal Processing and Efficient Utilization of Ministry of Education, School of Chemical Engineering and Technology, China University of Mining and Technology, Xuzhou 221116, China
These authors contributed equally to this work.
*
Author to whom correspondence should be addressed.
Academic Editor: Xiangzheng Deng
Received: 9 February 2015 / Revised: 20 March 2015 / Accepted: 16 April 2015 / Published: 29 April 2015
(This article belongs to the Special Issue Large Scale LUCC, Ecosystem Service, Water Balance and Energy Use)
View Full-Text   |   Download PDF [2148 KB, uploaded 29 April 2015]   |  

Abstract

China, as the largest coal-producing and -consuming country in the world, is highly dependent on its coal industry, or “Black Gold” industry, for the national energy and economy. The consequent environmental crises, however, have persisted for decades, and the most serious effect is surface subsidence induced by underground mining. Underground coal excavation in China has ignored this problem for thousands of years, even though it causes conspicuous damage to the surface ecosystem and construction projects due to the subsidence of overlying strata. This study recommends paste backfilling to replace the space originally occupied by coal resources to avoid such subsidence and proposes backfilling schemes for two mainstream mining methods used in China’s collieries, namely, continuous mining and fully mechanised coal mining. These methodologies have been successfully implemented in some collieries, and the gob area can be backfilled immediately to prevent surface subsidence. To promote an ecological ideology when conflict exists between economic profits and environmental protection, experience from developed countries should be considered, support and appropriate legislation from the government are essential, and the perspective of colliery managers should be taken into account, and further in-depth study on strata subsidence and backfilling material must be pursued. View Full-Text
Keywords: underground mining; surface subsidence; “Black Gold” industry; backfilling method; environmental protection; ecological sensitivity underground mining; surface subsidence; “Black Gold” industry; backfilling method; environmental protection; ecological sensitivity
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Feng, X.; Zhang, N.; Gong, L.; Xue, F.; Zheng, X. Application of a Backfilling Method in Coal Mining to Realise an Ecologically Sensitive “Black Gold” Industry. Energies 2015, 8, 3628-3639.

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