UNDERGROUND STRUCTURE CONSTRUCTION METHOD USING THE MOVEABLE TEMPORARY SUPPORTING FRAME

摘要

The present invention relates to a method of trenchlessly constructing an underground structure such as a tunnel or an underground road. A launch station and a reaching station are constructed at the front and rear of a working section wherein a container body is installed, and a steel pipe roof is formed by press-fitting steel pipes at an outer portion of a location among the working section where an outer wall and a slab of the container body are to installed, then the container body is towed to construct an underground structure, wherein a movable temporary supporting body movable together with the container body is installed at a front end of the container body. Towing the container body is enabled by repeating a method wherein the movable temporary supporting body priorly enters into a load of the working section in a predetermined unit distance to have an inner surface completely excavated while supporting upper soil pressure of the steel pipe roof and rear surface soil pressure of a side surface to have the container body entered. If the towing is completed, the movable temporary supporting body is separated from the container body.