| Strata stability control on deep mine and soft rock roadway is one of the technological difficulties for deep coal mining. With a broken soft rock roadway deformation control in Zhuxianzhuang Mine for study. Engineering geological characteristics and failure law of No.â…¡5 person rise roadway are fully analyzed based on theoretical analysis, numerical simulation and field test, and on this basis to explore the roadway damage deformation mechanism and influencing factors. Pointed out that the failure of the original support method is due to support system characteristics of lower-resistance are not well to block access to unstable rock creep stage for secondary support. Base on the research results have been advanced we proposed the application of high strength steel supports as the main supporting structure to control the rheological properties of No.â…¡5 person rise roadway.It is proved by practice that bolt/steel mesh/shotcret/grouting+high strength steel support can meet the requirements of the roadway.The research results of this paper have important guiding significance on deformation control of broken soft rock roadway, and can give reference to the roadway with the similar geological conditions, and further enriched the control theory on soft rock roadway. |
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