Research on Upper Limit Increased of Mining in Coal Mining Face

Yong Jun Li; Chen Li; Hao Sun; Hai Tao Xu

doi:10.4028/www.scientific.net/AMM.737.846

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vol. 737Research on Upper Limit Increased of Mining in...

Research on Upper Limit Increased of Mining in Coal Mining Face

Abstract:

In order to guarantee the safety of the coal mine, needing to leave in reasonable waterproof safety coal pillar. Aiming at the working face 3311 of Xuchang coal mine, this article based on the analysis to the basis of factors for improving the mining limit, using UDEC numerical simulation, the regulations of coal mining under buildings, railways and water bodies and historical experience to analyze crack-production ratio of the working face, study the height of water flowing fractured zone development, designing test mining program. Through the upper mining limit to liberate 160000t coal resources and to gain the obvious economic benefits, which provide important significance for other similar coal mines in coal field of North China area.

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Periodical:

Applied Mechanics and Materials (Volume 737)

Pages:

846-850

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.737.846

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Online since:

March 2015

Authors:

Yong Jun Li*, Chen Li, Hao Sun, Hai Tao Xu

Keywords:

Aquiferous Crevice Zone, Safety Coal Pillar, Upper Limit of Mining, Xuchang Coal Mine

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