| 摘要 |
PURPOSE: A construction method of an underground silo is provided to safely perform a blasting work of bedrock and to easily and safely construct an underground silo on a deep underground part. CONSTITUTION: A construction method of an underground silo is as follows. First and second approaches are formed on a first point of a silo and a second point of a silo arranged under the first point. Upper and lower spaces for the silos are formed by excavating the bedrock of the first and second approaches. A spiral boundary road connected to the first approach is formed along the outer surfaces of the silos. The bedrock from the bottom of the upper space to the top of the lower space is excavated. |
