Coal-mining technology in China

Shihua Shen

Energy, 1986, vol. 11, issue 11, 1141-1145

Abstract: Although China is the second largest coal-producing country in the world, the geological conditions of the country's coal seams are not always favorable. The coal seams in most of the existing coal-mining areas are to deep for surface mining. Therefore, about 96% of China's total coal production is from underground mines. Since the early 1950s great efforts have been made to improve coal-mining technology in China. The longwall retreating mining method has been popularized, and production from longwall faces account for about 92% of the total. About 40% of the total production is from thick coal seams using the slicing system. During the last 10 years the priority has been to improve the mechanization of longwall face operations. In the near future research will emphasize the development of new coal technologies for mining thin seams, extra thick seams, and steeply dipping seams.

Date: 1986
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Persistent link: https://EconPapers.repec.org/RePEc:eee:energy:v:11:y:1986:i:11:p:1141-1145

DOI: 10.1016/0360-5442(86)90050-2

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