| 摘要 |
The present invention relates to a multiple-pipes integrated direct-boring device and a method for constructing a direct-board tunnel structure by using the same. The purpose of the present invention is to remarkably reduce entire construction periods by enabling a tunnel from being safely and easily evacuated, be economical by remarkably reducing consumption of human resources and equipment, and enable the tunnel to be safely supported for long time after the construction of the tunnel is completed or during the construction of the tunnel. |
