Shotcrete construction establishing method for tunnels, involves attaching fixing points at mountain excavation, and forming shotcrete as layers, where distance of points is increased/or reduced until foil has same rigidity

摘要

The method involves applying a plastic foil (4) against a shotcrete section. Fixing points are attached at a mountain excavation for the foils, where distance of the points is increased/reduced until the foil has same rigidity, when the foil has increased or reduced thickness. A priming coat is coated on the shotcrete sided foil side before the construction of the shotcrete. The shotcrete is formed as layers in lower upward manner.