SUPPORTING METHOD OF JINCHUAN DEEP ROADWAY 1178 SUBLEVEL

摘要

Deep roadway failure mechanism of Jinchuan is analyzed. The result shows that anchor cable should be used and more attention should be paid on the floor supporting. Several supporting methods are put forward combined with physical circumstance of deep roadway 1178 sublevel, failure mechanism and previous supporting experiences. Every supporting method is simulated using 3D FEM. The result shows that the roadway can keep stability using high strength anchor bar combined anchor cable and floor bolt. The method is applied in actual supporting, and monitoring results show that the method can keep the stability of the tunnel.