The Effect of Coal-Mining on the Bottom Floor Stress and Floor Failure Law

Abstract:

According to the geology condition of 1028 face in Suntuan Coal Mine of Huaibei Mining Group, evolution law of stress and displacement of water-resisting floor along with working face ad-vancement was studied. The results show that the stress and the displacement of the floor change dynamically , the displacement in the front and back of working face ,and the difference of displacement result from stress concentration before mining ,relief pressure after mining , superpo-sition effect of additive stress caused by the additional stress in stress recovery . The measures to re-duce the coal floor damage were proposed.

• Periodical: Applied Mechanics and Materials (Volumes 170-173)
• Pages: 106-109
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.170-173.106
• Online since: May 2012
• Authors: Zhao Ning Gao
• Keywords: Deformation and Failure of Floor, Displacement Difference, Pressured Mining

References

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