| 摘要 |
PROBLEM TO BE SOLVED: To enable cut timbering without necessity of large-scale preparation work. SOLUTION: This cut timbering work method is formed so that a cut timbering is built between adjacent tunnel structural bodies 46. Also the cut timbering members are bridged pressingly from adjacent one tunnel structural body 46 to the other tunnel structural body 46, and the other cut timbering members are bridged from the inside of the other tunnel structural body 46 so that it becomes in a double structure by the overlapping with the existing cut timbering members. In addition, a solidifying material is filled into a clearance between the cut timbering members. |
