| 摘要 |
PURPOSE: A method for constructing a structure for forming an underground tunnel is provided to reduce construction time and costs by reducing the inserted amount of steel pipes. CONSTITUTION: A method for constructing a structure for forming an underground tunnel is as follows. A steel pipe(100) is inserted into a loop position. The side surface of the steel pipe is cut, and upper and lower waterproof plates are installed. Earth pressure supports support the upper and lower waterproof plates. A tunnel loop is formed in an excavated space. One or more connection steel pipes(200,200') with a large diameter are inserted into the space. The bottom surfaces of the connection steel pipes are cut.
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