| abstract |
The invention discloses a construction method for super large special-shaped section. By pre-supporting and reinforcing the tunnel face in advance, the stability of the tunnel face and surrounding rock mass during the excavation of a super-large cavern can be ensured, thereby ensuring the safety of the excavation process. . It adopts non-blasting and high-efficiency excavation, which can be applied to any construction conditions, especially for engineering construction with high concealment requirements and sensitive to the environment and ecology. It can also be configured with different advanced pre-support, excavation and section support according to different geological conditions, which can be applied to complex geological conditions. |