Study On Soft Rock Roadway Supporting Technology In Great Structural Stress Area

Mine fields whose roadways embed 560-580m deep locate on the west bend zone of the syncline. The roadways have many features, for example, deep buried depth, great structural stress, wide soft rock rang, complex supporting condition, and so on. In this study bolts-grouting and supporting technology were adopted after many investigations on the damage of soft rock roadway under great structural stress were done and related geological data and conclusions of numerical value calculation were analyzed in detail. Bolt grouting and supporting technology were adopted to harness soft rock roadway under great structural stress have many merits, for example, ensuring supporting effect, increasing safety factor, speeding up the excavation of large broken surface in soft rock roadway, alleviating labor intention of workers, decreasing transportation workload, reducing engineering cost, and so on.