User:Pjw0720/sandbox

Definition
A construction method that prevents arc-sliding at tunnel face and minimizes surrounding ground deformation by multi step steel pipe grouting at the face of the tunnel before excavation. and propels the DSM Plate for partitioning the face of tunnel.

A tunnel excavation method based on propelling DSM Plates one by one for partitioning the face of tunnel

Ground conditions

 * Capable of constructing tunnel in all types of soft ground including alluvial layers with sand gravel


 * Capable of constructing tunnel in grounds where tunnel face is prone to collapse


 * Capable of constructing tunnel in sand, weathered rock and soft rock

Alignment Conditions

 * Vertical alignment with upward or downward slope


 * Horizontal alignment with small radius


 * Horizontal alignment with right angle

Tunnel Shape

 * Capable of constructing box, Arch, asymmetric shape


 * Capable of constructing tunnel regardless of size

Standard E & C