Supporting Technics of Easily Mudding and Ultrahigh Roadway in Soft Coal Rock

Zhen Zhang

doi:10.4028/www.scientific.net/AMR.988.211

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HomeAdvanced Materials ResearchAdvanced Materials Research Vol. 988Supporting Technics of Easily Mudding and...

Supporting Technics of Easily Mudding and Ultrahigh Roadway in Soft Coal Rock

Abstract:

According to the situation of the great height wall, soft and weak surrounding rocks and sliming characteristics of the 15# coal west-third panel sump in the Gushuyuan mine, the deformation characteristics and mechanism of the sump were analyzed by field survey, laboratory tests and the numerical simulation method. The results show that the sump deformation and failure were determined by its low strength, weakness structural, sliming characteristics and excavation disturbance. The roadway deformation occurs mainly in the middle, upper and lower of the sides and the floor. A comprehensive solution is proposed, including sealing surrounding rocks, strengthening soft and weak surrounding rocks, strengthening the structure stability, improving the surrounding rocks stress environment. This method was applied in the coal mine. Field application results show that this method was suitable for control sump deformation, the maximum roadway roof subsidence is 15 mm, the two sides convergence is 30mm, and the maximum amount of floor heave is 21mm.

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Periodical:

Advanced Materials Research (Volume 988)

Pages:

211-217

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.988.211

Citation:

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Online since:

July 2014

Authors:

Zhen Zhang*

Keywords:

Full Section, Mudding Easily, Partition Strengthening, Soft Coal Rock, Ultrahigh Roadway

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* - Corresponding Author

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