| 摘要 |
PURPOSE: A vertical tunnel reaming method is provided to construct a various size of a vertical tunnel by minimizing noise and vibration and being applied in a city. CONSTITUTION: A plurality of deep holes is bored on an excavation position to excavate a vertical tunnel. A plurality of auxiliary deep holes including a diameter which is smaller than the deep holes is bored along the periphery of the excavation position of the vertical tunnel and around the deep holes. A crushing processing device crushing the ground is mounted on the auxiliary deep holes. [Reference numerals] (S10) Step of boring a deep hole; (S20) Step of boring an auxiliary deep hole; (S30) Step of preparing for ground crushing; (S5) Step of preprocessing for excavation of a vertical tunnel |
