One-way tunnel excavation method using pipe roof and tunnel structure using pipe roof

摘要

The present invention relates to a tunnel one-way excavation construction method using a pipe loop and a tunnel structure using a pipe loop, which can widen a tunnel, and locate a through part through a pipe loop reinforcement in a shaft to completely penetrate the tunnel in one direction. A separation point and a reinforcement point selection step of performing one-way excavation at one shaft of the tunnel, selecting a separation point at a distance from the other shaft of the tunnel, and selecting a reinforcement point into which a pipe loop is inserted; An expanding excavation step of expanding the tunnel from the separation point to the reinforcement point; A reinforcing step of reinforcing the pipe loop from the reinforcement point to the other shaft of the tunnel; And a through step of excavating the tunnel only in one direction from one shaft of the tunnel toward the other shaft of the tunnel, and penetrating the tunnel from the other shaft of the tunnel, wherein the tunnel structure using a pipe loop is a pipe loop It is characterized in that it is constructed through a tunnel one-way excavation construction method using.