Support Technology of Mining Roadway under Goaf of Coal Mine
Too small spacing between upper and lower coal seams in coal mines tends to increase the difficulty of support operation in lower coal seams,so it is necessary for mining enterprises to upgrade the support scheme of mining roadway combined with the actual environment.The spacing between 5#coal seam and the upper 4#coal seam in A Coal Mine is small,and under the influence of the goaf,the roof is easy to break and the safety hazard is high.Therefore,combined with the support status of the mining roadway of 5#coal seam,the numerical simulation analysis was carried out to study the mining roadway support parameters under the goaf.Finally,it was verified that the support scheme of mining roadway had good supporting effect,which can cope with the challenges of large fluctuation and low strength of 5#coal seam roof.
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