Research and Application of Rapid Excavation Technology of Bottom Drainage Roadways in Hudi Coal Mine
In order to solve the problem of tight replacement between mining and excavation of high gas and high outburst mines in Hudi Coal Mine,research and application of rapid excavation technology for bottom drainage roadways were carried out.Based on the geological conditions of Hudi Coal Mine,the control mechanism of surrounding rock failure and stability was analyzed,and the excavation support parameters were optimized.The excavation process and construction procedures were improved,significantly improving the excavation speed while ensuring the effectiveness of roadway support.The on-site application results show that the monthly excavation efficiency of the 1307 bottom drainage roadway increases by 47%year-on-year,and the deformation of the surrounding rock of the roadway is effectively controlled,providing a reference for the treatment of similar high gas mines with alternating tension between mining and excavation.
high gas minerapid excavationroadway supportbottom drainage roadway
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