Study on the Deformation Characters of the Coal Roadways with Compound Rock Strata and Water Spraying Roof

Abstract:

The coal roadways with water spraying usually have large surrounding rock deformation or roof abscission layer, especially to the roadways with compound rock strata roof, which could lead to sudden roof caving accidents, so it is imperative to research the roof characters and the corresponding controlling methods. In this paper, we firstly analyze the main reasons and characters of the roof deformation or its stability failure with bolt and cable supporting, and then the mechanical properties of the roof are tested in the lab, which could afford detailed datum to the further analysis. Based on the comprehensive researching results of this complex roof, a set of measuring device for the value of water spraying in single roof hole is developed and then applied to a typical coal roadway. Finally, some effective controlling methods are put forward to prevent from the large deformation of the roadways.

• Periodical: Applied Mechanics and Materials (Volume 214)
• Pages: 287-291
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.214.287
• Online since: November 2012
• Authors: Hong Yan, Teng Fei Xu, Jun Wang
• Keywords: Abscission Layer, Bolt Support, Cable Support, Compound Rock Strata, Water Spraying

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